Date Palm Varieties Research Articles

Spatial analysis and sequential equation modeling (SEM) of genetic diversity in date palm (Phoenix dactylifera L.)

Spatial analysis and sequential equation modeling (SEM) of genetic diversity in date palm (Phoenix dactylifera L.)

Genetic diversity and structure of Tunisian and Indian date palm (Phoenix dactylifera and sylvestris) cultivars and genotypes revealed by AFLP markers

The date palm breeding programs need to discover valid genetic fingerprints to characterize cultivars and assess their genetic diversity. This study assessed the genetic diversity among thirty-nine date palm cultivars from Tunisia (Phoenix dactylifera) and India (Phoenix sylvestris) by using six AFLP (Amplified Fragment Length Polymorphism) markers. 360 loci were amplified, with 127 loci polymorphic (34.35 %). The Jaccard's similarity coefficient ranged from 0.161 to 0.931, with the mean genetic distances of 0.568. AFLP's average marker index value was 7.28, with a resolving power of 10.91. The analysis of population structure showed two main clusters with a clear separation between Tunisian and Indian cultivars.Furthermore, the heatmap analysis allowed the identification of 10 bands specific to the Indian accessions, which were not detected in Tunisian genotypes. These loci could be linked to genes involved in adapting the species in Indian lands, which allowed the study of the genetic diversity of date palm resources of different origins, confirming the existence of at least two origins of domestication. Additionally, identifying AFLP loci specific to P. dactylifera and P. sylvestris will significantly contribute to breeding programs by exploiting species-specific polymorphisms.

Comprehensive analysis of microbiome biodiversity in popular date palm (Phoenix dactylifera L.) fruit varieties

Due to its nutritional value and health benefits, the date palm (Phoenix dactylifera L.) is an essential dietary food crop throughout Middle Eastern and African countries. Consumers are concerned about the possible microbial contamination of dates, especially since most dates arriving in local markets are unprocessed. The absence of processing increases the possibility of microbial contamination, which raises the probability of microbial contamination. This study aims to analyze and evaluate the variability of fungal and bacterial microbiota identified in the most popular date palm fruits in Saudi Arabia. The study assessed ten date variety fruits from the most popular date palm varieties for consumption in Saudi Arabia and analyzed the microbial count. Morphological and molecular characterization and comparison of nuclear ribosomal DNA internal transcribed spacer (ITS) sequences identified 78 fungi, including 36 distinct species across 15 fungal genera. Alternaria, Fusarium, Curvilaria, Aspergillus, and Penicillium were the most frequent genera among the ten fruit cultivars studied, according to ITS-rDNA sequence analysis. Furthermore, 36 bacterial isolates were obtained from ten date varieties studied, each with a unique colony morphology. These isolates were identified based on sequence alignment and comparison of their 16S rDNA internal spacer regions to those available in public databases. The results showed that the bacterial isolates included 15 species from five bacterial genera. The results suggested that Bacillus, Stenotrophomonas, and Brucella were the prevailing genera among the ten tested fruit varieties. Some bacterial genera, such as Brucella, Achromobacter, and Stenotrophomonas, are well-known potential human pathogens. Chaetomium globosum was also recognized as air pollution causing adverse health effects such as allergies and as the causal agent of human fungal infections among the tested date varieties; the Rashodiah type exhibited the highest fungal contamination, whereas the Sagai variety displayed the lowest fungal contamination. Conversely, the Sukkari, Barhi, and Mejdool varieties were the most contaminated with bacteria among the ten tested varieties, while the Khalas variety showed the least bacterial contamination. To the best of the authors' knowledge, this study provides the initial comprehensive account of the molecular and morphological identification of all fungal and bacterial genera associated with date palm (P. dactylifera) fruits.

The Effect of Adding Nano NPK Fertilizer EM1 biofertilizer and Spraying with Algae Extract on some Growth Characteristics and Yield of Date Palm Variety Khastawi

The Effect of Adding Nano NPK Fertilizer EM1 biofertilizer and Spraying with Algae Extract on some Growth Characteristics and Yield of Date Palm Variety Khastawi

Efficiency of Antioxidants on Physiological Traits and Growth Curve of Date Palm Fruit Cultivars Barhi and Zamli

The study aimed to investigate the impact of variety factor on the physiological characteristics and growth curve of date palm fruits in a private orchard in the Hartha district of Al-Masheeb, north of Basrah province. Two date palm varieties, Barhi and Zamli, were selected and antioxidants tocopherol and Glutathione were used at three concentrations (0, 75, 150 mg/L) for each. The interaction between these factors was studied in terms of physiological characteristics and growth curves. Results showed no significant differences between the varieties' physiological characteristics, but the spray treatments had a significant effect on the percentage of fruit set. The Glutathione spraying treatment had the highest rate of fruit set (86.60%), while the comparison treatment had the lowest drop rate (77.55%). The interaction treatments also had significant differences in drop rate and non-set fruit percentages. The Zamli variety showed the highest growth curve of physical traits (6 and 12 weeks after pollination), while antioxidant spray treatments had significant differences in the rate of physical characteristics. The interaction had a significant effect on the studied characteristics during the two growth periods

Anticancer Properties of Different Varieties of Date Palm (Phoenix dactylifera L.) Leaf Extracts in Human Tumor Cells: a Comparative Study.

Plant polyphenols are nutraceutical components with relevant biological effects on human health. They act against development of several diseases including cancer. In this study, the methanolic extracts of four date palm Phoenix dactylifera leaves (Deglet Noor (DN), Barhee (B), Khalas (KS) and Khunezi (KZ)) collected from south Tunisia were preliminary analyzed for their effects against U87 (human glioblastoma) and MDA-MB-231 (human breast cancer) cell line development. Results showed that Barhee extract (30μg/mL) was the most efficient to reduce the growth of both tumor cells to about 40% (p < 0.05) without inducing cytotoxicity. Significantly, KS, KZ, DN and B extracts (30μg/mL) decreased MDA-MB-231 and U87 cell adhesion towards fibrinogen and fibronectin. Using integrin blocking antibodies, leaf extracts competitively decreased human glioblastoma cell attachment to immobilized antibodies by interfering to αvβ3 and α5β1 integrin receptors. At the same concentration, extracts decreased MDA-MB-23 and U87 cell migration performed with wound healing assay. Particularly, Barhee and Deglet Noor leaf extracts (30μg/mL) significantly reduced U87 cell invasion by 52.92% (p < 0.01) and 74.56% (p < 0.01), respectively. Collegially, our findings revealed beneficial proprieties of four varieties of date palm leaf especially those displayed by DN and B extracts that may serve as active candidates against human glioblastoma and breast cancer progression.

POPULATION DENSITY OF LESSER DATE MOTH ON MOST PROMINENT DATE PALM CULTIVARS AT KHAIRPUR MIRS

Pakistan is a more peculiar and hearty zone for almost all types of date palm cultivars but only District Khairpur Mirs of Sindh is regarded as “Khajeen jo dees”. The field survey-based research study was conducted at Taluka Kingri, District Khairpur during, 2017-18. The present study was sought on viz., Aseel, Nar-aseel, Fasly, Karbalian, Otakin, Daki-wari, Asul-kurh, Kashoo-wari, Asul-khurmo, Dedhi-wari, Lessoro, Begun-wari, Gajar-wari, Noori-wari and Nakul-kurh date palm varieties. All the novel already cultivated varieties were observed through random selection against the population density of Batrachedra amydraula. The pest data was taken every week from April, May and June months in both years of the study period. The pest data was gathered from 15 acres of cultivated Phoenix dactylifera orchards and prohibited to any insecticides. The maximum suspected pest infestation was found on Fasli cultivar whereas; the minimum infestation was recorded on Aseel. This commercial high-priced variety is found with high tolerance capability against salinity, drought, and upper range temperature conditions and hence recommended for cultivation. In the present study, it was frequently observed the appearance of the Batrachedra amydraula on all novel cultivars. The “Khajoor” is the cash crop and the main economic source of livelihood of this region but for a few decades, LDM has leads productivity reduction in terms of quantity and quality. The food security and socio-economic status of date palms are poorly documented in Pakistan. In this context for date palm crop security, more work should be carried on against population reduction of LDM.

Evaluation of Endophytic Microorganisms (Trichoderma hazianum and Bacillus subtilus) as Biofungicides against Bayoud Disease (Fusarium oxysporum f. sp. albedinis) on Date Palm (Phoenix dactylifera L.)

Backgraound: Date palm disease named Bayoud, is the major constraint caused by the soil fungus Fusarium oxysporum f. sp. albedinis (Foa) in Algeria. This work has the objective to in vivo biocontrol on bayoud disease incidence on three date palm varieties (Deglet-Nour, Feggous and H-mira), using two antagonistic microorganisms, one fungus (Trichoderma harzianum) and one bacterium (Bacillus subtilus). Methods: Foa strains obtained from isolation of the spines carrying the typical symptoms of Bayoud disease. Two strains used T. harzianum and B. subtilus, are isolated from rhizosphere soils of the date palm. Using the greenhouse screening test, the in vivo biocontrol test is carried out on 3-4 month-old date palm seedlings at the rate of 5 ml of inoculum suspension. Result: A significant (P less than 0.01), difference of date palm seedlings reactions against Foa isolate and antagonistic microorganisms was observed. All three date palm varieties present a high susceptibility against Foa until the total mortality of date palm seedlings. The biocontrol test showed that two antagonists showed different reaction, with the complete resistance of three varieties treated by T. harzianum, while, the antagonist B. subtilus protect just two varieties (Deglet-Nour and H-mira) and can’t protect Feggous variety when showed the susceptibility reaction by presentation of typical symptoms of bayoud disease. We can apply of these antagonistic microorganisms to protect our groves contaminated by Bayoud disease and contain just susceptible commercial cultivars of date palm.

MONITORING, POPULATION DYNAMICS AND INFESTATION RATE OF RED PALM WEEVIL IN DIFFERENT LOCAL DATE PALM VARIETIES IN BAHAWALPUR

The date palm, or Phoenix dactylifera L., is a valuable fruit crop and source of income for many nations. It is a member of the Arecaceae family of palm trees. Red palm weevil (RPW), Rhynchophorus ferrugineus (Olivier, 1790) is an invasive pest that causes damage to palm trees worldwide by eating their stems inside. The objective of this study is to identify susceptible and resistant varieties among as well as identify the population dynamics of R. ferrugineus. Our results showed that most affected variety was Khurma in both age date palm e.g., five-ten old plants and in eleven-fifteen years old. While most superior least effected variety was Begum Jangi among Zhaidi, Aseel, Begum Jangi, Haleeni, and Shamran with no population. The most vulnerable date palm variety is Khurma. For both immature and mature R. ferrugineus, January through March and October through December are the ideal months to execute management measures. According to recent research, the Bahawalpur region needs to introduce resistant date palm varieties.

CHARACTERISTICS AND PROFITABILITY OF DATE PALM MARKETING IN KANO METROPOLIS, NIGERIA

This study aimed at analyzing Characteristics and profitability of date palm marketing in Kano metropolis, Nigeria. Multistage sampling technique was employed for selecting 50 respondents (15 wholesalers and 35 retailers) for the study. The data for the study were collected using structured questionnaires administered to the respondents. Descriptive statistics, Gross marketing margin, Net marketing margin and return per naira invested were used to analyze specific objectives of the study. The findings revealed that wholesalers (35.6 years) and retailers (26.1 years) involved in date palm marketing were primarily within their economically active age range. The marketers had small household sizes of 5 and 6 persons for wholesalers and retailers respectively, and a significant proportion (About 60%) had no formal education. Personal savings were the main source of initial capital for both wholesalers (53.3%) and retailers (54.3%). Co-traders were the primary source of marketing information (53.3%), and Jan Dabino (34%) emerged as the most popular and marketable date palm variety in the study area. The return on investment for the two ventures was estimated at 1.14 and 1.22 for wholesalers and retailers respectively. It was also found that retailers enjoy a higher net marketing margin and gross margin per bag than wholesalers respectively in the study area. Major constraints affecting date palm marketing in the study were inadequate capital (82%) and poor storage facilities (46%). It is recommended that the industry should be rejuvenated in order to meet the demand for domestic consumption and also the creation of job opportunities; and provision of capital through initiatives such as government subsidies

An Overview of Date (Phoenix dactylifera) Fruits as an Important Global Food Resource.

Dates are the fruits of the date palm belonging to the Arecaceae family; they comprise over 2500 species and 200 genera and constitute an essential part of the daily diet worldwide, with beneficial nutritional, health, and economic values. Several varieties of date palm (Phoenix dactylifera) fruit exist globally, especially in hot and humid regions. This review is an overview of date palms as a significant global food resource, including their historical significance, nutritional composition, cultivation practices, economic importance, and health benefits. The historical journey of dates goes back to ancient civilizations where they were revered for their richness in essential nutrients and natural sweetness. Today, dates are a vital crop in arid regions, contributing substantially to the agricultural economy and livelihoods of communities. This paper further explores the cultivation techniques employed to enhance date production. Furthermore, the nutritional composition of dates is analyzed in detail, highlighting their high content of vitamins, minerals, dietary fibers, and antioxidants. These attributes make dates a delicious treat and a valuable nutritional component, offering numerous health benefits. The potential health effects, including improved digestion, enhanced cardiovascular health, and increased energy levels, are discussed. Additionally, this paper delves into the economic significance of the date industry and its global trade.

Feeding Toxicity of Insecticides against Red Palm Weevil, Rhynchophorus Ferrugineus, (Coleoptera: Dryophthoridae) in a Controlled Environment

Rhynchophorus ferrugineus (Olivier, 1790), often known as the Asian palm weevil or red palm weevil (RPW) (Coleoptera: Curculionidae), had long been considered disruptive to many palm trees (Arecaceae), especially date palms. Observing adults of RPW inside the trunk of palm trees was challenging. Date palm trees provided shelter from bad weather for the larvae that lived and fed within. Finding the red palm weevils required dissecting the palm. Damage could occur to almost every commercially planted date palm variety in the nation, including Aseel, Hillawi, Karbalain, Mozawati, Kechen, and Dhaki. All year round, adult red palm weevils could be found inside palm trees, although they were most active in the summer. The primary method of managing RPW was the frequent use of synthetic pesticides, which were used both preventatively and therapeutically in an effort to lessen RPW damage and spread. In the present study, the soft stem dip method was used to evaluate the toxicity of three different insecticides (clothianidin, trichlorphon (systemic), and fipronil). The results showed that LC50 values with 95% CI (µg/ml) after 72 hours were recorded as 4.096 µg/ml in the case of clothianidin + trichlorfon, representing the highest toxicity. Trichlorphon against 3rd instar larvae of the red palm weevil was more toxic compared to clothianidin and fipronil. The study, therefore, suggested that these insecticides need to be properly included in IPM plans to combat this pest. To test and enhance the efficacy of such pesticides in field settings, more work was necessary.

Evaluation of date palm fruits quality under different irrigation water salinity levels compared to the fruit available in the market

IntroductionThe date palm (Phoenix dactylifera L.) is a major component of the agro-food systems of the arid regions. Since it is an indigenous tree, it is an integral part of the local cultural heritage and social and economic life. Date palm cultivation in the region is challenging due to various factors such as water scarcity and soil and water salinity.MethodsThis research study was conducted to evaluate the quality of commonly sold date palm varieties in the UAE market and grown using saline water at the ICBA research station in Dubai. The study involved measuring physical parameters like fruit weight, size, dimensions, color, volume, Brix, protein, sucrose, glucose, fructose, sugars, phenols, sodium, and potassium, as well as analyzing how consumers perceive the fruit’s quality attributes produced under varying salinity levels. The study evaluated Tamar dates’ texture, flavor, aroma, taste, color, and appearance using a five-point scale from very poor to excellent.Results and discussionThe study found that fruit quality is affected by salinity, and there is a significant interaction between variety and salinity treatments. Salinity affects date palm traits, but low to moderate levels do not affect fruit quality. Khalas, Sukkari, and Ajwa-Tul-Madinah are the least affected varieties. High salinity negatively impacts some varieties, leading to decreased fruit quality. However, it is also worth noting that salinity stress can increase the sugar concentration in fruit for specific varieties, as demonstrated in this study on fruit sugar content under such conditions. Among the tested dates, Sukkari from the market, Ajwa-Tul-Madinah irrigated with 5 and 10 dS m−1 have the highest sugar content and many other desirable characteristics. Hierarchical k-means clustering reveals that each genotype performs better under a specific level of salinity, allowing for targeted selection of genotypes for salinity mitigation. Sugar content is crucial in assessing date fruits irrigated with saline water. It should be included in the evaluation criteria to promote the use of saline water for date palm irrigation and save freshwater resources. The study provides valuable insights into different date palm varieties’ behavior under varying salinity levels, enabling farmers to optimize production and establish new evaluation criteria.

Date seeds (Phoenix Dactylifera L.) valorization: chemical composition of lipid fraction.

This research was aimed to study the lipid fraction of date seeds. Seventeen seeds of date palm varieties and clones were evaluated and assessed for their chemical components and for the properties of the date pits oil. Gas liquid chromatography showed that the main unsaturated fatty acid was oleic acid (46.00 - 50.87%), while the main saturated fatty acid was lauric acid (10.11 - 19.03%) for the cultivars Mentouj Tissgharine (MTN) and Bheir Ingli (KBN) respectively; other fatty acids were also identified. The physicochemical characterization showed an acid value ranging from 0.068 to 1.188%, a specific extinction value equal to (K232: 1.350-2.225; K270: 0.318- 0.521), a peroxide value in the interval (1.059-5.618 meq O2/kg) and an iodine value (41.861-59.980 g Iodine/100 g). The pheophytin content of date seed oils was found within the range from 21.855 to 75.685%. The chemical analysis showed that date seed oil can be useful in cosmetic and food products processing.

Analyzing Phytohormone Levels in Fruits of Date Palm Phoenix dactylifera L. Derived from Tissue Culture under Different Pollination Treatments

This study evaluated three male date palm varieties, namely, Red-Ganami, Red-Ganami + Khakri Al-Adi and Red-Ganami + Al-Canary, in three age of spathes (early, late and middle) in a private orchard at Al-Seebah district, Basrah province. The plants were subjected to two pollination dates immediately after opening of female flowers and three days after opening of female flowers. The contents of auxin-like substances, gibberellin and abscisic acid in the flowers were determined. The second pollination date resulted in the highest contents of auxins, gibberellins and abscisic acid, with values of 24.305, 138.660 and 12.355 µg.gm-1, respectively. The mixture of Red-Ganami + canary cultivars had the highest concentrations of auxin 24.512 µg.gm -1 and gibberellins 136.842 µg.gm-1, whereas Red-Ganami had the highest concentration of abscisic acid 3.554 μg.gm-1. Early age of spathes showed significant differences in the concentrations of auxin and abscisic acid, with average values of 26.015 and 14.031 µg.gm-1, respectively. Late postmenopausal age recorded the highest concentration of gibberellins at 136.842 μg.gm-1. For the two- and three-way interactions, a statistically significant superiority was observed in most of the study coefficients. In conclusion, the contents of auxins, gibberellins and abscisic acid significantly differed with the pollination date and the pollin cultivar combinations showed the highest concentrations of these substances. The different ages of male puberty also affected pollination and fertilization

Genetic diversity assessment and in vitro propagation of some date palm (Phoenix dactylifera L.) varieties

The evaluation of genetic diversity is crucial for breeders to develop strategies and improve the resilience, quality, and adaptability of the date palm. In this study, the genetic diversity of three date palm varieties was performed using ISSR-PCR molecular markers to determine its relationship with in vitro propagation response of these varieties. The molecular profiling was performed using ISSR-PCR. A total of 49 loci were produced by the PCR reactions, 38 of which were polymorphic while 11 were monomorphic. The level of polymorphism revealed by ISSR-PCR varied from 33.33% to 100%. The three date palm varieties were grouped into two clusters based on the results of cluster analyses that used morphological data and molecular profiles. Cluster I comprised the ‘Barhy’ variety and Cluster II included ‘Magdoul’ and ‘Amri’ varieties. The clustering analyses revealed the independence of the ‘Barhy’ variety in its characteristics from the other varieties based on either morphological or molecular data. The results of in vitro propagation showed that the ‘Amri’ variety exhibited the highest callus induction frequency (86.28%), callus weight (2.33 g), number of somatic embryos (9.32), number of shoots (14.62), number of roots (4.11), root length (4.63 cm), shoot length (13.61 cm) followed by ‘Magdoul’ and ‘Barhy’ varieties. The ‘Amri’ variety had the shortest callus induction period, at 23.26 days while the ‘Barhy’ variety exhibited the longest period of callus induction (28.55). It was deduced from the study that the ISSR marker reproduced trustworthy patterns of bands to determine the genetic diversity among different date palm varieties that are considered the cornerstone for the genetic improvement of date palms. The understanding of the relationship between genetic diversity and in vitro propagation response of date palm is essential for ensuring the long-term sustainability of its crop. This will facilitate better conservation and development of new date palm varieties that fulfil the needs of farmers and consumers.

Tissue Culture of Four Varieties of Date Palm Grown in Indonesia

In vitro propagation of date palms adaptive to Indonesian agroclimate is one of the solutions for providing superior date palm planting material. This study aimed to induce embryogenic calli and regenerate the calli into plantlets of four varieties of date palm grown in Indonesia: three female varieties (Barhee, Ajwa, and Khalas) and one male variety (Jarvis). The materials used were offshoots of the date palm trees that had been flowered at the Jonggol Farm, Bogor, Indonesia. Four layers (layer 1 is the innermost layer and 4 is the outermost layer) of the offshoot were cultured on MMS media added with 100 mg/L 2,4-D combined with 1 and 3 mg/L 2-iP. The results showed that primary callus for var Bahee and Ajwa emerged at 12 weeks after culture. Barhee and Ajwa, and at 18 weeks for Jarvis and Khalas. In var. Jarvis and Khalas, calli were induced only in layer 1 cultured on the media with 1 and 3 mg/L 2-iP. In comparison, callus induction of var. Barhee date palm was successfully performed in layer 1 and 2 on the media with 1 mg/L 2-iP. On the contrary, callus induction in var. Ajwa was successful in layer 1 and layer 2, on the media supplemented both with 1 or 3 mg/L 2-iP. Germination of the date palm somatic embryos into shoots, using non-hormone media occurred successfully in var. Ajwa, Jarvis, and Khalas, but not in Barhee. Regeneration of the shoots into plantlets was carried out successfully only in var. Ajwa and Jarvis. In conclusion, in vitro propagation of date palm was successfully conducted in Jarvis and Ajwa varieties, while var Barhee was the most difficult among the four varieties.

The Effect of the Hight of the Pheromone Traps Type Delta in Trapping and Forecasting the Emergence of the Lesser Date Moth, Batrachedra amydraula Meyrick and Evaluating the Sensitivity of Some Palm Varieties to Insect Injury

El-Filahy, M.H.A. and M.Sh. Mansour. 2023. The Effect of the Hight of the Pheromone Traps Type Delta in Trapping and Forecasting the Emergence of the Lesser Date Moth, Batrachedra amydraula Meyrick and Evaluating the Sensitivity of Some Palm Varieties to Insect Injury. Arab Journal of Plant Protection, 41(3): 226-232. https://doi.org/10.22268/AJPP-41.3.226232 During the 2021-2022 season field study conducted in Anbar governorate to determine the population dynamics of Batrachedra amydraula using pheromone traps (Alpha scenes Inc. West Linn) and the effect of trap height on number of male insects traped. In addition, host preference and sensitivity of date palm varieties to infestation with the insect was also evaluated. The results obtained showed that the first appearance of the insect was at the end of the third week of March with an average of 2 insects/trap at a temperature of 16.5°C and 51.5% RH. The number of insects caught in the trap reached a peak during the first week of June at an average of 139 insect/trap, at a temperature of 32°C and 42% RH. The insect count then decreased after the third week of June to zero insects/trap until the third week of July. Field experiments also showed that the traps height had an effect on the number of insects caught. The average number of total insects caught in traps at 1.5 m was 45.5, whereas the average number of insects caught in traps placed at 2.5 m was 20.5. The results also showed that the highest total infestation rate in the Khistawi variety was 36.89%, followed by Zahdi (18.83%). The infestation rate of the variety kheyara was the lowest (12.61%). The results also showed the average larval density of the insect Batrachedra amydraula was the highest on the khestawi variety with total average injury severity of 0.14%, followed by zahdi variety with an average total injury severity of 0.05%. Therefore, by combining the infestation rate and average number of the insect larvae, it can be concluded that the Khistawi variety was the most sensitive to the insect, and the variety Kheyara was the most tolerant. In addition, the use of pheromone traps was instrumental in reducing the injury caused by the insect, and using resistant/tolerant varieties can effectively contributes to the reduction of the infestation rate of the insect to become below the economic injury level. Keywords: Date palm, Phoenix dactylifera L., Lesser date moth Batrachedra amydraula, Pheromone traps, Variety sensitivity

Anatomical study of the roots of seven varieties of date palm (Phoenix dactylifera L.)

This study was conducted at one of the private orchards to determine the variety through the anatomical characteristics of the roots; three palm trees were selected for each variety, identical, 15-18 years of age. The anatomical characteristics of the roots of seven date palm varieties were studied. The studied traits were circumferential circle diameter, phloem bundle length, xylem bundle length, next xylem, epidermis, sub-epidermal, fibrous bundle, cortex, and the diameter of parenchymal cells. Results show that the studied varieties differed in the studied anatomical characteristics. The Khadrawi variety was significantly superior in the characteristic of the surrounding circle diameter compared to the rest of the studied varieties, The Barhi variety was significant in the cortex and phloem bundle length, The Asabee Al-Aroos variety was distinguished in the characteristic of epidermis thickness, and the lowest values were in the variety Halawi. The Halawi variety was distinguished by the thickness of the sub-epidermal area, and the lowest values were in the Barhi variety. Keywords: Anatomical study, roots, seven varieties, date palm (Phoenix dactylifera L.)

Morphometric Diversity of Date Palm (Phoenix Dactylifera L.) Cultivars from Gujarat Estimated by Fruit Characteristics

Morphometric Diversity of Date Palm (Phoenix Dactylifera L.) Cultivars from Gujarat Estimated by Fruit Characteristics