Length-weight Parameters Research Articles

A preliminary assessment of the length-weight relationship and condition factor of Hydrocynus vittatus and Oreochromis niloticus in Lake Kariba, Zimbabwe

Background: Hydrocynus vittatus and Oreochromis niloticus are two economically important fish species in Zimbabwe. The length-weight relation can be employed to assess the health and well-being of fish so as to assist fish farmers. The objective of the study was to investigate the length-weight relationship and condition factor of these fish species. Methods: Thirty-four fish of each species (Hydrocynus vittatus and Oreochromis niloticus) were collected by seine netting in the Sanyati Basin, Lake Kariba in August 2019. The total length (TL) and standard length (SL) were measured in centimetre (cm), and the body weight (BW) was measured in grams (g). The body weight (BW) was measured using a digital top-loading electronic weighing balance. Results: The value of the exponent b in the LWR for H. vittatus was 2.984, indicating negative allometry (b<3). The exponent value of O. niloticus in the LWR was 3.04 (b>3) implying positive allometry. The r2 values for H. vittatus and O. niloticus were 92.3% and 97.3% respectively, indicating that there was a high degree of positive correlation. The condition factor for both fish species were greater than 1.60 implying good physiological conditions for both fish species. Conclusions: This study provides preliminary information on length-weight parameters of O. niloticus whose data was previously not available in the take.

Length-Weight Relationships for 44 Central Appalachian Fish Species

Species-specific length-weight relationships can inform researchers and managers about the growth patterns and health of fish populations. Few length-weight relationships exist for Appalachian stream fish species despite the high amount of biodiversity within the region. The main purpose of our study was to determine the length-weight relationships for stream fish species found in Central Appalachia. We sampled 16 streams and captured over 14,000 individual fish among 44 species. We identified each fish to species and recorded total length (mm) and weight (g) for each individual. These data were log10 transformed and analyzed using linear regression to calculate the length-weight parameters for each species. Relationships were calculated for 44 different stream fish species. Searches in FishBase.org revealed that of the 44 species in our data, 9 species have no current data in FishBase.org (Froese and Pauly, 2016), while 20 others have no previous representation from Central Appalachia. The relationships obtained in this study are some of the first published for these species in this region. Availability of species- and region-specific data on length-weight relationships could help inform future research and management of these species.

Length-weight relationship of six freshwater fish species from Wular Lake - A Ramsar site in Kashmir Himalaya, India

Aim: This study was undertaken to understand the length weight relation of six freshwater fish species from Wular Lake. Methodology: A total of 303 specimen belonging to two families (Cyprinidae and Nemacheilidae) and four genera (Schizothorax, Triplophysa, Crossocheilus, Puntius) from Wular Lake were collected from five different sites with the help of local skilled fishermen using cast nets and traditional nets. Total length and weight were measured to the closest 0.1 mm and 0.01 g employing a digital caliper and weighing balance, respectively. Results: The values of the exponent b in length-weight relationship was recorded as 2.05 for Triplophysa marmorata, 0.31 for Crossocheilus diplochilus, 0.12 for Pethia conchonius, 4.14 for Schizothorax niger, 2.58 for Schizothorax esocinus and 4.93 for Schizothorax curvifrons respectively. These results provide the primary basic information on length-weight parameters of these commercially important fish species from Wular Lake. Interpretation: Length-weight relationship can form a baseline data that can be further employed to study the growth pattern of fish species in the lake. This would help in the development of a strategy for conservation of natural stocks of these endemic fish species in Wular Lake. Key words: Ecological, Freshwater, Ramsar, Schizothorax, Wular Lake

An Analysis of the Growth and Photosynthetic Responses of Potted <italic>Veronica pusanensis</italic> Y.N.Lee according to the Shading Levels

Background and objective: Veronica pusanensis, an endemic species of South Korea belonging to the Plantaginaceae family, is found in Busan, South Korea. Due to its high ornamental value, it is expected to be utilized as a flower crop. However, currently it is an endangered species with its habitats being destroyed and reduced.Methods: Therefore, in this study, we analyzed the growth and photosynthetic responses of potted plants of V. pusanensis under different shading levels to enable mass production. Polyethylene (PE) shading films were selected as the shading material, and shading levels were designed at 0, 35, 45, 60, 75, and 99%, respectively.Results: Results showed that shoot height, shoot width, ground cover, leaf length, leaf width, shoot fresh and dry weight, chlorophyll content (SPAD units), and chlorophyll fluorescence parameters Fv/Fm and PIABS were highest under the 35% shading level. This indicates that it is relatively more desirable to grow V. pusanensis in shade culture compared to under direct sunlight. Meanwhile, root fresh weight and dry weight were highest under the 0% shading level.Conclusion: Therefore, it is recommended to grow V. pusanensis under direct sunlight to significantly increase root biomass when the purpose is to facilitate rootage when transplanting plants for habitat restoration. On the other hand, for the cultivation of V. pusanensis as an ornamental flower crop, it is recommended to grow the plants under the 35% shading level to significantly increase plant sizes and maintain ensure the proper functioning of photosynthetic responses in photosystem II (PSII).

Length Weight Relationships of Small Indigenous Fish Parambassis ranga (Hamilton, 1822) from Ujani Wetland of Maharashtra, India

Length- weight relationships parameters are useful in fisheries science to estimate weight of individual fish from its length. It can always be used for determination of condition indices and to compare life history and morphology of populations of given species. Parambassis ranga commonly called Indian glassy fish was investigated for the study of length-weight relationships (LWRs) from Ujani wetland, a dam constructed on Bhima river of Maharashtra state of India. During the study period of November 2021 to October 2022, total of 300 samples were collected from local fishermen and length-weight parameters were recorded in laboratory at Modern College, Ganeshkhind, Pune. The present study shows intercept (a value) of 0.0089. Slope (b value) was 3.2303 which lie in expected range of 2.5 to 3.5. The slope value was more than 3 i.e. above isometric growth value that indicates positive allometric growth of fish.

Length–Weight Parameters for 32 Species from the Marchica Lagoon (Mediterranean, Morocco)

Length–Weight Parameters for 32 Species from the Marchica Lagoon (Mediterranean, Morocco)

Biological and life-history parameters for Labeo rosae Steindachner, 1894 and Oreochromis mossambicus (Peters, 1852) from Flag Boshielo Dam, Olifants River, South Africa

Inland fisheries contribute towards food security for rural communities living close to large aquatic systems. However, sustainable inland fisheries rely on accurate biological information for the target species at the proposed fishery location. In this study, the biological information for Labeo rosae Steindachner, 1894 and Oreochromis mossambicus (Peters, 1852) were determined at Flag Boshielo Dam, Olifants River system, Limpopo province, as part of a larger study to evaluate a small-scale gill net fishery at this impoundment. Nine fish surveys were conducted from February 2016 to April 2017 using mixed sampling gears. Labeo rosae exhibited positive allometric growth (b > 3) while O. mossambicus displayed negative growth (b < 3). For L. rosae, the asymptotic length was 391 mm L ∞, and the length-at-50% sexual maturity 165.8 mm. For O. mossambicus, the asymptotic length was 420 mm L ∞, and the length-at-50% sexual maturity 166.5 mm. Both species population stocks showed signs of exploitation. Total mortality for L. rosae was 0.57 yr−1 with a fishing exploitation of 0.21 yr−1, while total mortality of 0.78 yr−1 and fishing exploitation of 0.50 yr–1 were estimated for O. mossambicus. The biological data collected, apart from the length–weight parameters for O. mossambicus, are suitable for conducting a fisheries assessment for these species at Flag Boshielo Dam.

First report on length-weight relationships of commercially important fishes in potamon zone of the river Kosi, Supaul, Bihar, India

The length-weight relationships of five fishes: Mystus tengara, Mystus bleekeri, Ailia coila, Aspidoparia jaya, and Cabdio morar of Koshi River, Bihar, India, were estimated. The study is the first report on the LWR of these five species from Koshi River, Bihar. The relationships were calculated using the formula: Log W = Log a + b Log L and length-weight parameters (“a” and “b”), and coefficients of determination (r2) were determined. The regression coefficient (b) values are 2.51, 3.38, 1.93, 2.62, and 2.63 for Mystus tengara, Mystus bleekeri, Ailia coila, Aspidoparia jaya, and Cabdio morar specimens, respectively.

Cardiolipin synthesis in Pseudomonas fluorescens UM270 plays a relevant role in stimulating plant growth under salt stress

Membrane cardiolipin (CL) phospholipids play a fundamental role in the adaptation of bacteria to various environmental conditions, including saline stress. Here, we constructed deletion mutants of two CL synthetase genes, clsA (UM270 ∆clsA) and clsB (UM270 ∆clsB), in the rhizobacterium Pseudomonas fluorescens UM270, and evaluated their role in plant growth promotion under salt stress. UM270 ∆clsA and UM270 ∆clsB mutants showed a significant reduction in CL synthesis compared to the P. fluorescens UM270 wild-type (UM270 wt) strain (58% ∆clsA and 53% ∆clsB), and their growth rate was not affected, except when grown at 100 and 200 mM NaCl. Additionally, the root colonization capacity of both mutant strains was impaired compared with that of the wild type. Concomitant with the deletion of clsA and clsB genes, some physiological changes were observed in the UM270 ∆clsA and UM270 ∆clsB mutants, such as a reduction in indole acetic acid and biofilm production. By contrast, an increase in siderophore biosynthesis was observed. Further, inoculation of the UM270 wt strain in tomato plants (Solanum lycopersicum) grown under salt stress conditions (100 and 200 mM NaCl) resulted in an increase in root and shoot length, chlorophyll content, and dry weight. On the contrary, when each of the mutants were inoculated in tomato plants, a reduction in root length was observed when grown at 200 mM NaCl, but the shoot length, chlorophyll content, and total plant dry weight parameters were significantly reduced under normal or saline conditions (100 and 200 mM NaCl), compared to UM270 wt-inoculated plants. In conclusion, these results suggest that CL synthesis in P. fluorescens UM270 plays an important role in the promotion of tomato plant growth under normal conditions, but to a greater extent, under salt-stress conditions.

Length-Weight Relationship and Condition Factor of Twenty Fish Species in Ebrie Lagoon (Aghien-Potou Sectors Abidjan, Côte d’Ivoire)

Aims: This study investigated Length-weight relationships and condition factors of fish species in Ebrie Lagoon (Aghien-Potou sector, Côte d’Ivoire)&#x0D; Place and Duration of Study: Ebrie Lagoon (Aghien-potou sector) from April 2019 to March 2020.&#x0D; Methodology: study was conducted during 3 to 4 days continuously in Ebrie Lagoon (Aghien-Potou Sector). Furthermore, monthly fish samples were collected from commercial fishing area at random using gillnets, cast nets, traps, hooks and beach seines.&#x0D; Results: All Length-Weight regressions were highly significant with the coefficient of determination (r2) ranging from 0.61 in Schilbe mandibularis to 0.90 in Monodactylus sebae and Chrysichthys maurus. An isometric growth was observed for most of species except three of them namely Ethmalosa fimbriata, Pseudotolithus elongatus, and polydactylus quadrifilis. The k values varied from 0.19±0.001 in S. melanotheron to 6.10±0.3 in Monodactylus sebae. The values of b and k denote that the Ebrie lagoon could provide a favourable environment and suitable habitat for the growth of those fish species.&#x0D; Conclusion: The study provides basic information on length-weight parameters for twenty major fish species collected from Ebrie lagoon (Aghien-Potou sector). Three species namely Ethmalosa fimbriata, Pseudotolithus elongatus and Polydactylus quadrifilis exhibited a trend of positive growth whereas seventeen fish species showed isometric growth. The condition factor k was superior to 1 for 75% of the fish species and inferior to 1 for 25 % of the fish species. These growth trends denote that the lagoon could provide a favourable environment and suitable habitat for the growth of those fish species. Thus it would be interesting to create a protected area near the lagoon in order to ensure the protection of fish species.

The Growth and Production of Several Upland Rice Varieties Under Shaded Conditions

The research aims to analyse the growth and production of several upland rice varieties under shaded conditions. Factorial randomized block design was used in this study, and treatments were as follows: Shading (N) which consisted of 3 levels of treatments, namely N0 (un-shaded), N1 (30% shaded), N2 (60% shaded); and upland rice varieties (G) which were consisted of G1 (Ciherang), G2 (Situ Bagendit), G3 (Kabir 07) and G4 (Malaysian upland rice). Results showed that low light intensity due to shading treatments supressed plant height growth, reduced the number of productive tillers, delayed flowering time and reduced grain yield. Significant difference were observed in the panicle number, panicle length, grain weight and plant dry weight parameters, but showed no significant effect on plant height, tiller numbers, panicle exit age and total grain content. While variety treatments showed significant differences in the parameters of 15 and 30 DAP (days after planting), panicle numbers and plant dry weight. However, difference in showed insignificant effect on plant height 45 DAP (days after planting), tiller numbers, panicle exit age, panicle length, and grain weight. It is also reported that interactions were observed between treatments on all parameter observed, except on panicle exit age.

Length-weight relationship and condition factor of three endemic fish species, Ponticola bathybius, Neogobius caspius and N. pallasi (Perciformes: Gobiidae) from the Southern Caspian Sea basin, Iran

In this study, the length-weight relationships (LWRs) and condition factors were estimated for 445 specimens belonging to three gobiid species viz. Ponticola bathybius (Kessler, 1877), Neogobius caspius (Eichwald, 1831) and Neogobius pallasi (Berg, 1916) from the Southern Caspian Sea basin. Total length and total weight of the examined specimens ranged 4.9-28.3 cm and 0.64-263.4 g, respectively. The length-weight parameter b of the studied species found between 2.47 (N. caspius) and 3.45 (N. pallasi) with r2 ranging 0.831 to 0.988. LWR and K parameters are reported first time for N. pallasi from the Caspian Sea basin. The condition factor estimated was calculated from 0.94 (N. pallasi) to 0.98 (N. caspius) and 1.00 (P. bathybius). The basic biological information on the LWRs of these three gobies will be useful as baseline information for further biological research in the region.

Population parameters, exploitation rate and diet of black-chinned Tilapia, Sarotherodon melanotheron Rüppell, 1852 (Pisces: Cichlidae), from Badagry Creek, Lagos, Nigeria

The black-chinned tilapia (Sarotherodon melanotheron) is a member of the cichlid family, which can be cultured to complement the output from a predominantly catfish aquaculture industry in Nigeria. In order to achieve this objective, it is important to study the bio-ecology of the fish to ascertain the exploitation status and the potential for culture. Fish were collected monthly from February to November 2018 from three sampling sites (Topo, Akarakumo and Ajido) in Badagry Creek, Lagos, Nigeria using gears like cast net, gill nets and traps. The samples were analysed for length-weight relationship, population parameters and feeding preference. The population dynamics of the stock was assessed by the Von Bertalanffy growth model (VBGM) using Electronic Length Frequency Analysis. The parameters of VBGM; asymptomatic length (L∞) and growth coefficient (K) were 20.46 cm and 0.62 year−1, respectively. The growth performance index (Ǿ) was 2.41 and the potential longevity (tmax) was 4.84 years. The total, natural and fishing mortalities were 1.06, 0.68 and 0.38 year−1, respectively. The exploitation rate was estimated as 0.36. The length at first maturity (L50) was 13.79 cm and the length at first capture (Lc) was 12.27 cm. E0.1, E0.5 and Emax are 0.60, 0.38 and 0.70, respectively. The dominant food items in the gut of the fish belong to the algae phylum, Chlorophyta. The study showed that S. melanotheron from Badagry Creek are planktivores and the exploitation rate of the fish is currently close to optimum and should be sustained at this level to prevent overexploitation.

First report on embryonic and larval development of 2n/3n mosaic sterlet

Mosaicism is frequently observed in aquaculture practices, and it adversely affects the production as well as the restoration programme of the sturgeon. The purpose of the present study was the induction of 2n/3n mosaic in sterlet, Acipenser ruthenus L., and compare their embryonic and larval development with diploid control sterlet. Microsatellite DNA loci genotyping was conducted for the identification of the genotypes and parentage analysis. Embryonic development was monitored in experimental groups at every 24 h interval. Identification of individual stages of embryonic development was recorded based on a 36-degree scale of development. Additionally, the BW and body length (LT) of experimental fishes were taken during 110 days of the rearing period. The Fulton’s condition coefficient (F), length-weight parameters, and specific growth rate (SGR) coefficient were calculated. The analysis of embryonic development of the 2n/3n mosaic and the diploid control group did not show differences. However, higher mortality (88%) was observed in 2n/3n mosaic groups in comparison to the diploid control groups (55%). BW and body length of 2n/3n mosaic sterlet were slightly lower than the diploid control sterlet, but the differences were not statistically significant. F analysis did not confirm a lower growth performance of the fishes in the 2n/3n mosaic group. Microsatellite DNA loci genotyping confirmed both the incidence of polyspermy and retention of the second polar body. This paper presents the first report on embryonic development and growth performance of 2n/3n mosaic sturgeons.

Pelvimetria em cadelas S.R.D. (sem raça definida)

Pelviology means the study of the pelvis, a structure formed by bones, ligaments and muscles. One of the subjects of pelviology corresponds to pelvimetry, which deals with the measurement of pelvic measurements, and which has a close relationship with reproduction. This study aims to verify the correlation between some body parameters and pelvic measurements. We used 50 N.R.D. female canine cadavers, varying in age and size, from euthanasia or natural death from the HOVET and Veterinary Clinics of the cities of XXX. Initially the body length, body height, thoracic perimeter, and body weight parameters were measured. Then, the bony pelvis was removed from the cadaver, sectioning the spine at the level between the lumbar vertebrae 5 (L5) and 6 (L6) and the femur in its middle third. Immediately after this procedure, the excess soft tissue was removed. In pelvimetry the following diameters were measured: thigh bone; transverse; acetabular; lateral ischiatic; true conjugate and vertical. The following mean values and standard deviation were obtained: 1) Body parameters: body weight (Kg) - 8.40 ± 5.86; height (cm) – 35.50 ± 11.76; body length (cm) – 48.60 ± 13.48; and thoracic perimeter (cm) – 43.80 ± 14.24; and 2) Pelvic diameters (cm): thigh bone – 3.313 ± 0.830; transversal – 3.864 ± 0.900; acetabular – 4.326 ± 1.140; lateral ischiatic – 7.171 ± 2.140; true conjugate – 4.720 ± 1.270; and vertical – 4.697 ± 1.270. Finally, it was verified that there is a significant positive correlation between body parameters and pelvic diameters

Synergistic effects of vehicular emissions (NO2, SO2 and SPM) on progression of Crocus sativus L.in Saffron bowl Kashmir

Respirable dust sampler (Envirotech model APM-460DXNL) was used to estimate the spatial and seasonal variation of vehicular emissions (NO2, SO2, and SPM). Concentration of pollutants in ambient air have been extensively revealed. However, little information is provided on spatial and seasonal variation of vehicular emissions and their impacts on Crocus sativus. During the current study the concentration of vehicular emissions was SPM >SO2>NO2. Length, fresh & dry weight and biochemical parameters of Crocus sativus L. changed considerably along the pollution gradient. Shimadzu spectrophotometer model- UV1800ENG240V SOFT was used to estimate changes in biochemical parameters. The aforesaid findings manifest that vehicular emission is a vital factor impacting the progression of Crocus sativus. It is of utmost importance to mention here that on reducing vehicular emissions the progression of Crocus sativus can be increased substantially. Moreover, our results can also contribute in developing pollution models and hence reduce crop damage thereof.

РОЗМІРНО-ВАГОВІ ПОКАЗНИКИ МОЛОДІ РІЗНИХ ВИДІВ СИГОВИХ (COREGONINAE) РИБ, ВИРОЩЕНИХ В УМОВАХ ЗАМКНЕНОГО ВОДОПОСТАЧАННЯ

Purpose. Determining the growth dynamics of whitefish juveniles in conditions of recirculated aquaculture systems to current needs of industrial aquaculture of Ukraine. Methodology. The work was performed in accordance with generally accepted guidelines used for coregonid rearing in industrial aquaculture. The study was conducted in a specialized farm for whitefish breeding - "Lavaretus" LLC. Findings. Weight and linear growth during the period of cultivation in controlled conditions of whitefish young-of-the-year were characterized by dynamics, which were generally close to that typical for coregonids. The study included four coregonid species with different feeding types. Planktivorous (peled), bentivorous (whitefish), polyphagous species that is able to feed on various food organisms (muksun) and peled/broad whitefish hybrid. Feeding regime: during the transition to the mixed feeding was carried out 48 times a day (14 hours with an interval of 15 and 30 minutes) manually; further, according to an increase in fish weight was reduced to 4 times a day using automatic feeders. The average weight and length of young-of-the-year grown in a recirculating aquaculture system was: - peled – 5.6 ± 0.4, muksun – 10.1 ± 0.6.9, Baltic whitefish – 8.6 ± 1.2 g, peled/broad whitefish hybrid – 7.9 ± 0.2 g. The coefficient of variability of weights were: peled – 40.4%, muksun – 32.2%, Baltic whitefish – 21.1%, peled/broad whitefish hybrid – 41.9%. Originality. New data on piscicultural-biological parameters and dynamics of growth of juveniles of various coregonids or cultivation in conditions of a recirculating aquaculture system were obtained. Practical value. The development of whitefish farming technology in RAS conditions, which, in contrast to salmon cultivation, is only at the initial stage of implementation, so obtained data will be the basis for the development of whitefish culture in Ukraine. Key words: recirculating aquaculture system, young-of-the-year, coregonids, length-weight parameters, rearing.

PeskAAS: A near-real-time, open-source monitoring and analytics system for small-scale fisheries.

Small-scale fisheries are responsible for landing half of the world's fish catch, yet there are very sparse data on these fishing activities and associated fisheries production in time and space. Fisheries-dependent data underpin scientific guidance of management and conservation of fisheries systems, but it is inherently difficult to generate robust and comprehensive data for small-scale fisheries, particularly given their dispersed and diverse nature. In tackling this challenge, we use open source software components including the Shiny R package to build PeskAAS; an adaptable and scalable digital application that enables the collation, classification, analysis and visualisation of small-scale fisheries catch and effort data. We piloted and refined this system in Timor-Leste; a small island developing nation. The features that make PeskAAS fit for purpose are that it is: (i) fully open-source and free to use (ii) component-based, flexible and able to integrate vessel tracking data with catch records; (iii) able to perform spatial and temporal filtering of fishing productivity by fishing method and habitat; (iv) integrated with species-specific length-weight parameters from FishBase; (v) controlled through a click-button dashboard, that was co-designed with fisheries scientists and government managers, that enables easy to read data summaries and interpretation of context-specific fisheries data. With limited training and code adaptation, the PeskAAS workflow has been used as a framework on which to build and adapt systematic, standardised data collection for small-scale fisheries in other contexts. Automated analytics of these data can provide fishers, managers and researchers with insights into a fisher's experience of fishing efforts, fisheries status, catch rates, economic efficiency and geographic preferences and limits that can potentially guide management and livelihood investments.

Principal component analysis approach for comprehensive screening of salt stress-tolerant tomato germplasm at the seedling stage

Salt stress is a major abiotic factor that affects the growth and yield of crops. The present study was carried out to assess the salt tolerance among the Arka Samrat, Arka Rakshak, YVU-1, S-22, YVU-2, and PKM-OP tomato germplasms using principal component analysis (PCA). Different salt (NaCl) concentrations like control, 0.04 M, 0.12 M, and 0.20 M were selected in order to classify them into sensitive and tolerant tomato germplasms based on 13 parameters. A significant variation was observed among the selected tomato germplasms towards salinity tolerance at the seedling stage. Shoot length, root length, fresh weight, and dry weight parameters of the seedlings were decreased linearly with an increase in the external NaCl concentration. Salinization of plants has shown to reduce K+ content and increase in the Na+ accumulation, Ca2+, and Catalase activity. Salt stress also increased electrolyte leakage and reduced relative water content of all germplasms. The maximum parameters were less affected in Arka Rakshak and Arka Samrat compared to the remaining germplasms at higher salt stress. The PCA analysis of 13 morphological and physiological variables indicated that Arka Rakshak and Arka Samrat germplasms were salt-tolerant and PKM-OP was susceptible. Thus PCA analysis results are useful for the identification of resistance and sensitive germplasms at the seedling stage.

Sultani Çekirdeksiz Üzüm Çeşidinde Farklı GA3 Uygulamalarının Üzüm Verim ve Kalitesine Etkilerinin Belirlenmesi

Bu araştırma, Denizli ilinin Honaz ilçesindeki 41B Amerikan asma anacı üzerine aşılı Sultani Çekirdeksiz üzüm çeşidi bağlarında, 2018 yılında yürütülmüştür. Araştırmada, Sultani Çekirdeksiz üzüm çeşidinde farklı GA3 uygulamalarının (kontrol, 15–60 ppm GA3, 20–80 ppm GA3, 80–100 ppm GA3 + 20 ppm Forchlorfenuron) üzüm verim ve kalitesine etkilerinin belirlenmesi amaçlanmıştır. Elde edilen bulgulara göre; Sultani Çekirdeksiz üzüm çeşidinde yapılan farklı uygulamalar, kontrole kıyasla üzüm verim ve kalitesinde önemli artışlara neden olmuştur. Ortalama verim (49.32 kg/omca), salkım eni (9.59 cm), salkım boyu (31.97 cm), salkım ağırlığı (1804.3 g/salkım), salkım sıklığı (8.57), tane eni (15.79 mm), tane boyu (22.71 mm) ve tane ağırlığı (3.50 g) parametrelerinde en yüksek değerler, üçüncü uygulama olarak belirlenen 80–100 ppm GA3+20 ppm Forchlorfenuron uygulamasından elde edilmiştir.