Highest Positive Indirect Effect Research Articles

Path and Genetic Divergence Analysis of Mustard [Brassica juncea (L.) Czern & Coss.] Genotypes

The present investigation consisting of seeds of 72 genotypes with 3 check varieties (Varuna, Kranti, NDR-8501) were used for experimentation under Augmented Block Design in Indian mustard germplasm/genotypes was carried out during 2019-20 on the Student Instructional Farm Acharya Narendra Deva University of Agriculture & Technology Kumarganj Ayodhya (U.P.) India. The characters studies were Days to 50 % flowering, Days to maturity, Plant height (cm), Number of primary branches/plants, Number of secondary branches/plants, Length of main raceme (cm), Number of silique in main raceme, Number of seeds/siliquae, 1000-seed weight (g) and Seed yield/plant (g). The highest positive direct effect on seed yield per plant exhibited by 1000 seed weight (0.2512) followed by length of main raceme (0.2189), the highest positive indirect effect on seed yield per plant was exhibited length on main raceme (0.0477) via seed pre-silique fallowed by the number of siliquae on main raceme (0.0332) via secondary branches per plant. The maximum intra-cluster distance was estimated in case of Cluster VI (2.652) followed by cluster I (2.520), Cluster IV (2.352), cluster III (2.329), cluster VIII (2.148). The highest inter-cluster distance was observed between cluster IV and VI (4.417) followed by cluster III and VI (4.270), VI and VIII (4.251), cluster I and VII (4.156). The maximum cluster mean was found in cluster I (9.21) for seed yield per plant followed by cluster III (8.67) and cluster VII (8.50).

Path Coefficient Analysis of Rice (Oriza sativa L.) Genotype under Laboratory Conditions

The present investigation was conducted at Seed Testing Laboratory of Seed Technology Section, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.). The study was based on the germplasm evaluation of 45 germplasm including three checks viz., NDR-2065, BPT 5204 and Sambha sub1. Seedling length (0.366), speed of germination (0.132), Seed width (0.108), shoot length (0.082), seed weight (0.064), root length (0.061), vigour index-II (0.057) and L/B ratio (0.033) existed substantial positive effects on vigour index-I. Seeds weight (0.875), followed by seed width (0.610), exerted very high order positive indirect effects on vigour index-I seed weight substantial positive indirect effects on seed vigour index-I via seed width were also contributed by seed width (0.610), seedling length (0.552), L/B ratio (0.294), seedling dry weight (0.037) made considerable positive indirect on vigour index-I. The lowest and highest mean performance for root length (cm) was noted for B-4311 (10.50 cm) and HRT-m-20/3220 (31.20 cm) respectively. None of the 45 lines were statically inferior or superior than general mean for root length which 14.63 cm. out of 45 genotypes, nineteen were statistically at par with the best genotype is HRT-m-20/3220.

BREEDING POTENTIAL OF RICE GENOTYPES IN TWO AGROCLIMATIC CONDITIONS OF SULAIMANI - KURDISTAN REGION - IRAQ

This study was aimed to investigate the genetic variability of 26 rice genotypes and evaluation at two locations in Sulaimani governorate, Gaba and Chawtan which were completely different in their environmental condition during the season of 2019. The performances of the genotypes were analyzed at both locations as well as the average of both. Simple coefficients of correlation were used to assess the grain yield components and their relationships. Path analysis was used to determine the direct and indirect effects of such components on grain yield plant-1. The genotypes were grouped based on the agro-morphological features using cluster analysis. Almost all of the traits at both locations and the average of both locations showed highly significant differences; Chawtan outperformed Gaba location for the traits no. of tillers plant-1, no. of panicle plant-1, 1000-grain weight, and plant-1 grain yield, whereas higher values were found for plant height and no. of grains panicle-1 for Gaba location. At both locations, there was a highly significant and positive association between the number of tillers and panicles in plant-1 and grain yield plant-1. The number of panicle plants-1 had the most favorable direct effects on grain yield at both locations. At both locations, the highest positive indirect effect on grain output was provided by the number of tillers plant-1 via the number of panicle plant-1. Based on the agro-morphological features, the rice genotypes were grouped into 5 clusters at both locations. At both locations, Cluster V gave better values regarding grain yield.

A Study on Correlation and Path Coefficient Analysis for Yield and Associated Traits in Bread Wheat (Triticum aestivum L.)

Wheat (Triticum aestivum L.) is the world's most important cereal grain which contains carbohydrate, protein, fat, minerals and significant amounts of vitamins. A study was conducted in Augmented Block Design with 105 genotypes of bread wheat with four checks (HD-2967, DBW-222, DBW-107, and HD-2733) for estimation of means, range, correlations and path-coefficient. A wide range of variations were observed for different characters under study. The genotype RAJ-4549 (16.35), UP-3056 (15.78), DBW-344 (15.78), produced highest grain yield plant-1 followed by NW-8076 (15.36) and NW-8019 (15.14). In case of correlation study, grain yield plant-1 had a highly significant and positive correlation with tillers plant-1, biological yield plant-1, peduncle length, and spike length; whereas a non-significant negative correlation was found with days to 50% flowering, plant height and days to maturity. In path coefficient analysis, major positive direct effect on grain yield plant-1 was exerted by biological yield plant-1, followed by harvest-index, number of grain spike-1, peduncle length, number of tillers plant-1, test weight, days to 50% flowering and spike length. Tillers plant-1 and peduncle length exhibited high order positive indirect effects on grain yield plant-1 via biological yield (0.87) and (0.69) respectively. The characters showing highly significant positive correlation among yield and its components can be further validated and if consistent performance is found in future study; emphasis should be given to those characters while developing high yielding varieties.

Cattle dung and bioturbation by dung beetles improve oak seedling establishment in Mediterranean silvopastoral ecosystems

This study aims to determine whether the application of cattle manure and associated bioturbation by dung beetles and other invertebrates can increase oak seedling establishment in the high biodiversity Mediterranean silvopastoral systems known as “dehesas”, which are comprised of scattered oaks and a grassland layer and are used for livestock rearing. A two-year study was conducted in a representative dehesa in southern Spain. Firstly, the effect of cattle dung pads on acorn consumption by livestock and wild predators was monitored, along with dung beetle abundance and plot bioturbation. Secondly, the indirect effects of bioturbation on acorn burial, acorn predation by rodents and oak seedling establishment were assessed under the condition of livestock exclusion. The results consistently demonstrate a high positive indirect effect of the presence of cattle manure on the persistence of acorns, as well as on seedling establishment, as a result of reduced predation by rodents and improved microhabitat conditions for the acorns and seedlings. These processes were mediated by bioturbation. Tunneler dung beetles, which move a great amount of soil material, were dominant in our records, which suggest their importance for passive acorn burial, without disregarding the influence of other edaphic invertebrates present. We conclude that the presence of cattle manure significantly improves oak seedling establishment in Mediterranean dehesas through the passive burial of acorns by bioturbation, which acts to protect them from predation by rodents, desiccation and other damage. Passive acorn burial by dung beetles and other invertebrates thus emerges as an important ecosystem service that has been little-studied to date. Appropriate rotational management of livestock could therefore contribute to addressing the bottleneck of oak regeneration in Mediterranean dehesas.

Relationship and Association Analysis in the Cultivated and Wild Species of Sesame

The experimental study was undertaken in the Wild species garden and Oilseeds farm at Tamil Nadu Agricultural University, Coimbatore, during Rabi’ 2021 to know the association between yield and its component traits in cultivated and wild species of Sesame. Nine varieties of Sesamum indicum and three wild species, namely Sesamum alatum, Sesamum malabaricum, and Sesamum radiatum were assessed for eight quantitative traits namely plant height, the number of branches per plant, days to first flowering, the number of capsules per plant, the number of seeds per capsule, capsule length, thousand seed weight and yield per plant. The correspondence among the cultivated and wild species of Sesame was explicated over the heatmap in which cultivated varieties of Sesamum indicum were categorized under three clusters and wild species into two clusters. Correlation analysis revealed that seed yield per plant emphasizes a positive and high significant correlation with a number of capsules per plant and thousand seed weight. Path analysis delineated that number of capsules per plant had a high positive direct effect on yield followed by a less positive direct effect on thousand seed weight and a number of branches, while thousand seed weight has high positive indirect effect on seed yield per plant via number of capsules per plant. It can be concluded that the traits, namely number of branches, number of capsules and thousand seed weight recorded both significant positive correlation and high direct effect on single plant yield. Therefore, the selection process prioritizing these traits with higher values would be rewarding in Sesame crop improvement breeding program.

Genotypic and phenotypic correlation and path analysis studies in portulaca (Portulaca oleracea L.)

The Experiment was conducted at Kittur Rani Channamma College of Horticulture, Arabhavi, UHS, Bagalkot during the year 2018-19. The experiment was laid out using randomized block design (RBD) with twenty five genotypes of portulaca and three replications. The observation on plant growth parameters indicated that, plant height has positive and significantly (both at p = 0.01 and p = 0.05) correlation with foliage yield per plant (rP = 0.301), number of leaves per plant (rP = 0.304), number of branches per plant (rP = 0.613), number of nodes (rP= 0.297), stem girth (rP = 0.808), fresh weight of plant (rP = 0.396) and vitamin-A content (rP = 0.383). It was also significantly (at p = 0.05) and positively correlation with secondary branches (rP = 0.268). Number of leaves per plant had positive and significantly (both at p = 0.01 and p = 0.05) correlated with foliage yield per plant (rP = 0.606). Vitamin A content had positive and significantly (both at p= 0.01 and p = 0.05) correlated with foliage yield per plant (rP=0.352) and found that negatively significant correlated with Iron (rP= 0.217). Plant height had positive and significant correlation with foliage yield per plant (rg= 0.301) and it had high positive and direct effect (4.54) on foliage yield per plant, it had high positive indirect effect through secondary branches (2.483), plant spread e-w (1.21), number of leaves (0.442) and number of branches (0.717).

Genetic Variability and Association Analysis for Yield and Its Component Traits in Sunflower (Helianthus annuus L.)

Twenty-nine sunflower genotypes were evaluated for genetic variability and association of various morphological traits with seed yield. The genotypes were evaluated in Randomized Complete Block Design with three replications. Eight biometrical traits viz., days to 50% flowering, days to maturity, plant height (cm), head diameter (cm), volume weight (g/100 mL), 100-seed weight (g), oil content (%) and seed yield per plant (g) were recorded. The phenotypic and genotypic variation washigh for seed yield per plant and 100-seed weight, indicating that selection will be effective for improving these characters. Traits with high heritability and high genetic advance were highly amenable to selection which was observed for days to 50% flowering and plant height. The trait days to maturity weregoverned by non additive gene action as it showed low genetic advance. Correlation coefficients measure the degree of relationship between two or more variables. The key trait seed yield per plant had positive significant correlation with plant height (0.61), head diameter (0.83) and 100-seed weight (0.73). Path analysis revealed that 100-seed weight (0.62), days to maturity (0.34) and head diameter (0.30) had high positive direct effect on seed yield. Head diameter had the highest positive indirect effect on seed yield per plant through 100-seed weight (0.45)

Estimation of genetic variability and correlation among different ryegrass genotypes for fodder yield and quality related traits.

Ryegrass (Lolium perenne) is the most important fodder crop grown worldwide. The presentresearch work was carried out at the research area of MNS university of Agriculture, Multan.Twenty ryegrass accessions were sown in three replications following a randomized completeblock design. Analysis of variance showed that genotypes significant for all traits instead offresh fodder yield and dry fodder yield. The genotypes 193145 and 196538 showed bestresults for most of the traits studied. The phenotypic and genotypic positive and significantassociation of plant height, leaf area and dry weight with fresh fodder yield was observed.Dry fodder yield had a positive and significant association with plant height and leaf area,fresh weight, crude protein and ash contents at genotypic level. So, the dry weight hadhighest positive direct effect on fresh fodder yield followed by number of tillers. Leaf areaand crude protein was negative direct effect on fresh fodder yield. The highest positiveindirect effect by crude protein via dry fodder yield followed by number of tillers and leafarea. It was concluded that plant height, number of tilers, plant height, leaf area and dryweight will be used as selection criteria for improving the fodder yield.

Estimation of genetic variability and correlation among different ryegrass genotypes for fodder yield and quality related traits.

Ryegrass (Lolium perenne) is the most important fodder crop grown worldwide. The presentresearch work was carried out at the research area of MNS university of Agriculture, Multan.Twenty ryegrass accessions were sown in three replications following a randomized completeblock design. Analysis of variance showed that genotypes significant for all traits instead offresh fodder yield and dry fodder yield. The genotypes 193145 and 196538 showed bestresults for most of the traits studied. The phenotypic and genotypic positive and significantassociation of plant height, leaf area and dry weight with fresh fodder yield was observed.Dry fodder yield had a positive and significant association with plant height and leaf area,fresh weight, crude protein and ash contents at genotypic level. So, the dry weight hadhighest positive direct effect on fresh fodder yield followed by number of tillers. Leaf areaand crude protein was negative direct effect on fresh fodder yield. The highest positiveindirect effect by crude protein via dry fodder yield followed by number of tillers and leafarea. It was concluded that plant height, number of tilers, plant height, leaf area and dryweight will be used as selection criteria for improving the fodder yield.

A Research on determining the factors affecting on seed yield in different lentil lines and cultivars (Lens culinaris Medik.) in adiyaman conditions by correlation and path coefficient analysis

This research was conducted in 2015 year in Kahramanmaras province (37°32'09.5"N 36°55'01.2"E) with 3 lentil genotypes (CAGIL, FIRAT-87, and FLIP 2005-20 L). In the research, direct and indirect effects of yield components on seed yield were examined by correlation and path coefficient analysis. The correlation coefficients between the investigated features were found to be insignificant. According to the path coefficients, the highest positive direct effect on seed yield was determined as pod number per plant (p=4.015). On the other hand, the highest negative direct effect on seed yield was obtained from plant height (p=-3.606). The indirect effect of the seed number per plant over number of days until maturity on the seed yield was determined as the highest positive indirect effect (p=55.546%). The indirect negative highest effect on seed yield was determined in the pod number per plant over thousand seed weight (p=51.488%). As a result, the number of pods per plant should be taken into consideration by the breeders due to direct effect of it was positive and high

Correlation and path coefficient analysis in determining the characteristics that affect seed yield in different lentil (Lens culinaris Medik.) genotypes in Kahramanmaras conditions

This research was conducted in 2015 year in Kahramanmaras province (37°32'09.5"N 36°55'01.2"E) with 3 lentil genotypes (CAGIL, FIRAT-87, and FLIP 2005-20 L). In the research, direct and indirect effects of yield components on seed yield were examined by correlation and path coefficient analysis. The correlation coefficients between the investigated features were found to be insignificant. According to the path coefficients, the highest positive direct effect on seed yield was determined as pod number per plant (p=4.015). On the other hand, the highest negative direct effect on seed yield was obtained from plant height (p=-3.606). The indirect effect of the seed number per plant over number of days until maturity on the seed yield was determined as the highest positive indirect effect (p=55.546%). The indirect negative highest effect on seed yield was determined in the pod number per plant over thousand seed weight (p=51.488%). As a result, the number of pods per plant should be taken into consideration by the breeders due to direct effect of it was positive and high

Genetic variability, correlation and path analysis studies for yield and yield attributes in African rice (Oryza glaberrima) germplasm

Thirty-one accessions of Oryza glaberrima were evaluated to study variability, correlation and path analysis for yield and yield attributing traits. Three checks namely, BPT 5204, IR 64 and Swarna for were utilized for comparison of variability parameters. High range of variation, PCV, GCV and high heritability coupled with high genetic advance was observed for days to 50 per cent flowering and the number of spikelets per panicle. Correlation revealed that the number of productive tillers per plant, panicle length, spikelets per panicle, 1000 seed weight, kernel length, and L/B ratio showed a positive association with grain yield. However, days to 50% flowering, plant height and kernel breadth were found to be negatively correlated. Path analysis identified L/B ratio, panicle length and kernel breadth, which had the maximum direct positive effect on grain yield, while, L/B ratio via kernel length and days to 50% flowering via 1000 seed weight exhibited high positive indirect effects on grain yield per plant. Therefore, the selection of accessions with more panicle length and early maturity would be most suitable for selection in yield improvement programs.

Genetic Variation of Quantitative and Quality Traits in Rice Varieties

An investigation was carried out to study the genetic parameters and character association for yield, yield attributing, quality and nutritional traits of twelve rice varieties. Analysis of variance revealed significant differences for all the traits under study indicated the presence of wide genetic variability among the genotypes. Small differences between genotypic coefficient of variation and phenotypic coefficient of variation were recorded for all the characters studied which indicated less influence of environment on these characters. High heritability coupled with high genetic advance was observed for zinc content (brown) and number of chaffy grain per panicle exhibited, indicating that simple selection could be effective for improving these characters. Yield per hill had the highest positive direct effect. This study revealed that yield per hill, days to 50% flowering, days to maturity, panicle length and thousand grain weight are the most important yield contributing characters and an attempt should, therefore, be made for effective selection on these traits. Yield per hill might be considered as the most important trait due to low difference of GCV and PCV, high heritability in broad sense (h2b) with high genetic advance (GA) in percent of mean, significant positive correlation and high positive indirect effects. Another important trait such as days to 50% plants to flowering and thousand grain weight might also be considered due to their minimum difference of GCV and PCV values, high h2b with high GA in percent of mean, significant positive correlation and higher positive direct effects.
 Ann. Bangladesh Agric. (2019) 23(1) : 69-77

Genetic variability, character association and path analysis for anaerobic germination traits in rice (Oryza sativa L.)

Study on genetic parameters, character associations and path coefficients of 107 rice genotypes for anaerobic germination traits revealed high variability, heritability and genetic advance as per cent of mean for seedling vigour index. High heritability and genetic advance as per cent of mean was also recorded for shoot length, root length, seedling dry weight and anaerobic response index. Further, all anaerobic germination traits studied had recorded high positive association with anaerobic response index. Among these, shoot length had recorded high positive direct and indirect effects and is identified as effective selection criterion for improvement of anaerobic response index towards tolerance to anaerobic conditions during germination for use under direct seeding.

Multivariate analysis and selection criteria for identification of African rice(Oryza glaberrima)for genetic improvement ofindicarice cultivars

AbstractThirty-one accessions ofOryza glaberrimawere evaluated to study the genetic variability, correlation, path, principal component analysis (PCA) andD2analysis. Box plots depicted high estimates of variability for days to 50% flowering and grain yield per plant inKharif2016, plant height, productive tillers, panicle length and 1000 seed weight inKharif2017. Correlation studies revealed days to 50% flowering, plant height, panicle length, number of productive tillers, spikelets per panicle having a high direct positive association with grain yield, while path analysis identified the number of productive tillers having the maximum direct positive effect on grain yield. Days to 50% floweringviaspikelets per panicle, productive tillers and plant heightviaspikelets per panicle exhibited high positive indirect effects on grain yield per plant. PCA showed that a cumulative variance of 54.752% from yield per plant, days to 50% flowering, spikelets per panicle and panicle length, contributing almost all the variation of traits whileD2analysis identified days to 50% flowering and grain yield per plant contributing maximum to the genetic diversity. Therefore, selection of accessions with more number of productive tillers and early maturity would be most suitable for yield improvement programme. The study has revealed the utility of African rice germplasm and its potential to utilize in the genetic improvement ofindica rice varieties.

Assessing the relationship between yield component in pea (Pisum sativum L.) varieties using correlation and path analysis under Sulaimani condition

Correlation and path analysis studies were conducted during the winter season of 2017-2018 and spring season of 2018. The present experiment was conducted to study the availability and determines the relative importance of primary and secondary traits in field pea, through the association among the characters viz. ( No. of pods plant-1 - Weight of pods plant-1(g) – Pod length plant-1 (cm) - No. of seeds pod-1 - Weight of seeds pod-1 (g) - Weight of seeds plant-1 (g) - 100 seed Weight (g) - Biological weight plant-1 (g) - Harvest Index - Seed yield (Kg ha-1) ) . The experimental material comprised of 4 field pea varieties viz. (Americana, Jeza, Pakland , Avola). From each plot, five competitive plants were selected randomly for recording observation for all quantitative characters. The results were summarized as follow, highly significant and positive association were recorded between seed yield with other characters except for the character 100 seed weight which was not significant at winter season and significant at spring season, but not significant with harvest index at both seasons. The highest positive direct effect in seed yield produced by the weight of seeds per plant at both seasons, while the highest positive indirect effect in seed yield recorded by weight of seeds per plant via weight of pods per plant at both seasons.

Genetic correlation and path analysis of agronomical traits of soybean (Glycine max) lines infected by CpMMV

Abstract. Faot MM, Zubaidah S, Kuswantoro H. 2019. Genetic correlation and path analysis of agronomical traits of soybean (Glycine max) lines infected by CpMMV. Biodiversitas 20: 1496-1503. CpMMV is a virus that can decrease soybean production. The virus vector is an insect where the control is carried out using a chemical insecticide that is less environmentally friendly. Developing a superior variety of soybean that is resistant to CpMMV is one of the solutions to solve such a problem. This research aimed to study the relationship of agronomical traits to the yield of soybean line infected by CpMMV. Ten lines and two varieties of soybean with four replications was used in this study in a randomized complete block design. Bemisia tabaci was used in CpMMV infestation as the vector of the disease. Rearing Bemisia tabaci was done forty days before sowing the main experiment, and it placed surrounding the main experiment plots. The observation variables were disease severity, days to flowering and maturity, plant height, length, width and ratio of the leaf, number of branches and reproductive nodes, number of filled and unfilled pods, number of seeds, 100 seeds weight, and seed yield per plant. The data was analyzed for genotypic and phenotypic correlation, and the path analysis for direct and indirect effects of disease severity, and agronomical characters. The results showed that CpMMV infestation caused disease severity by about 20-28.5%. A significant positive phenotypic correlation to the seed yield per plant was shown by the number of reproductive nodes and the 100 seeds weight. Meanwhile, a significant positive genotypic correlation to the seed yield per plant was shown by the days to maturity and the number of branches. The number of reproductive nodes, the 100 seeds weight, and the number of seeds per plant showed a high direct effect to the seed yield per plant. The high positive indirect effect was also shown by the number of filled pods, days to flowering, plant height, leaf length, leaf width, the number of reproductive nodes, and the number of branches through the number of seeds per plant was also. Therefore, the selection criteria for high yielding CpMMV-resistant soybean lines can be based on the number of reproductive nodes and 100 seeds weight.

Correlation and Path Coefficient Analysis for Seed Yield and some of its Traits in ‎Common Bean (Phaseolus vulgaris L.)‎

Common bean (Phaseolus vulgaris L.) is one of the most important vegetable crops grown in Egypt. This study was conducted to determine the phenotypic, genotypic, and environmental correlations between seed yield and some of its traits, and to perform path analysis to assessthe direct and indirect effects between seed yield per plant as dependent variable and the other traits as explanatory variables.Twenty-seven accessions of common bean were evaluated at El-Dalgamon village, El-Gharbia Governorate, Egypt during the two successive summer seasons of 2016 and 2017 using a randomized complete block designwith three replications.The results revealed the importance of genotypic correlations coefficients compared to the corresponding values of phenotypic ones. The genotypic correlations were positive ranging from 0.60 to 0.99 for the correlation between seed yield per plant and each of plant height, number of leaves per plant, number of days to flowering, number of racemes per plant, number of days to maturity, number of pods per plant,and number of seeds per pod. Genotypic path analysis indicated the importance of positive direct effects of plant height, number of pods per plant,number of days to maturity, andnumber of seeds per pod,suggesting thedirect selection of these traits to improve seed yield. Whereas, number of leaves per plant,number of days to flowering,ornumber of racemes per plant should be selected simultaneously with plant height ornumber of pods per plant since they had high positive indirect effects on seed yield through these two traits.

Statistical Analysis of Grain Yield in Iranian Cultivars of Barley (Hordeum vulgare)

To determine the most important traits influencing grain yield of barley, 10 cultivars were evaluated in three field experiments in randomized block design with three replicates during 2013–2014 growing season. In each experiment, 10 yield component traits were evaluated. Following a combined analysis of variance, multivariate statistical analyses such as simple correlation coefficients, factor analysis, stepwise analysis, path analysis and cluster analysis were administered on combined means. The correlation coefficient analysis showed significant positive correlation of grain yield with grain filling period, biological yield, harvest index, number of seed/spike, number of seed/m2, 1000-seed weight and number of spikes/m2. Factor analysis divided the 11 measured variables into five factors. Factor 1 was affected by grain yield and grain filling period. Factor 2 was affected by number of spikes/m2 and number of seed. Factor 3 was associated with days to hardening and days to maturity. Factor 4 was influenced by number of seed/spike, number of spikes/m2 and 1000-seed weight. Fifth factor was strongly affected by biological yield and plant height. In stepwise regression analysis for grain yield as independent variable, two traits include biological yield and harvest index entered to regression model in four steps with R-square = 0.98. Regression coefficient of both entered variables was positive and significant at 1% probability level. The path coefficient analysis based on grain yield, as a dependent variable, implicated that biological yield had the highest positive direct effect on grain yield. Highest positive indirect effect on grain yield was related to harvest index through biological yield. Cluster analysis using Ward’s method divide 10 investigated cultivars into three clusters. Cluster 1 specified to cultivars with the highest plant height, number of seed/spike and 1000-seed weight. Cluster 2 was specified to lines with higher amount of grain yield, biological yield and number of seeds/m2. Two control cultivars include Sina and Nosrat were located to cluster 3. Finally, based on GGE biplot analysis, Sina, which has higher yield and more relative stability, can be suggested as superior than the other cultivars.