scholarly journals Determination of Five Mineral Element Contents in Pollen Grains of Different Seedling Date Palm (Phoenix dactylifera L.) Male Trees Grown in Fayoum Governorate, Egypt

2019 ◽  
Vol 7 ◽  
pp. 16-25
Author(s):  
M.A. Seif El-Yazal ◽  
Samir A. Seif El-Yazal
Keyword(s):  
Date Palm ◽  
Pollen Grains ◽  
Dry Weight ◽  
Phoenix Dactylifera ◽  
Pollen Grain ◽  
The Other ◽  
Manganese Concentration ◽  
Regular Component ◽  
Mineral Element ◽  
Study Results

This experiment was conducted to found the connection between sensible male pollinators and the content from mineral element (Zinc, Irion, Manganese, Cupper and Magnesium) in pollen grain of fifty seedling date palm male and compared it with the best selective five seedling date palm males (number 2, 10, 29, 40, 46) are appropriate and promising males for to be utilized in pollinating female date palms and mistreatment in breeding programs in previous study. Results found variations among the categories of pollen and elements. The highest concentration of zinc was found in males' number (2, 10, 40 and 46) which recorded 127,102, 115 and 122 μg/g dry weight respectively as compared to the other male trees. Also the highest concentration of iron was found in male number (40) which recorded 222 μg/g dry weight as compared to the other male trees. Moreover, notes from result excellence male number (10) in manganese concentration which recorded 202 μg/g dry weight as compared to the other male trees. In this concern, pollen grain of date palm male trees contained also, high concentrations of copper and magnesium the concentration ranging from 10 to 30 and 1320 to 1985 μg/g dry weight for copper and magnesium respectively. The best result for copper and magnesium which obtained from the selective male number (46) which recorded 30 and 1985 μg/g dry weight for copper and magnesium respectively as compared to the other male trees. From all the results we can conclude that the date palm pollen grain was as rich source of important minerals, so its suitability as a regular component in plant and human diet.

Incidence de l'aération sur le traitement par compostage des sous-produits du palmier dattier contaminés parFusarium oxysporumf.sp.albedinis

2005 ◽  
Vol 51 (1) ◽  
pp. 69-77 ◽  
Author(s):  
K Chakroune ◽  
M Bouakka ◽  
A Hakkou
Keyword(s):  
Total Nitrogen ◽  
Date Palm ◽  
Dry Weight ◽  
Initial Mixture ◽  
Phoenix Dactylifera ◽  
The Other ◽  
Mineral Matter ◽  
Other Hand ◽  
Phoenix Dactylifera L ◽  
Cooling Phase

Composting of date palm (Phoenix dactylifera L.) residues contaminated with Fusarium f.sp oxysporum albedinis, causal agent of the vascular wilt (Bayoud) of the date palm, has been achieved. The effect of the aeration of the piles by manual turning has been studied. The maintenance of an adequate humidity of 60%–70%, necessary to the good progress of the composting process, required the contribution of 11.4 L of water/kg of the dried residues. The evolution of the temperatures in the three piles presents the same phases. A latency phase, followed after 2–3 d of composting by a thermophilic phase, which lasts about 24 d, where the temperature remains elevated between 50 and 70 °C. Then a cooling phase that takes about 15 d, during which the temperatures fall to values between 25 and 35 °C, near room temperature. Fusarium f.sp oxysporum albedinis is eliminated completely during the thermophilic phase of composting, and increasing frequencies of turning accelerate its disappearance to a certain extent. On the other hand, pH remained steady and relatively basic oscillating between 8.2 and 8.7. Ninety percent (90%) of the the date palm residues are composed exclusively of organic matters. The total nitrogen represents only 0.4%. The contribution of manure decreases the ratio of carbon to nitrogen (C/N) from 115 to 48 in the initial mixture. After 80 d of composting and according to the frequency of return up, there is a reduction of the granulometry of the substratum, the C/N ratio (from 29% to 44%), the organic matter (from 15% to 23%), the total volume (from 25% to 35%), and of the dry weight of the swaths (from 16% to 24%). On the other hand there is an increase in total nitrogen rate (from 20% to 40%) and in the mineral matter (from 23% to 35%).Key words: composting, palm date, Fusarium oxysporum f.sp. albedinis.

scholarly journals Effect of Pollen Grains and Growth Regulator NAA on Some Fruit Characterization of Date Palm Phoenix Dactylifera L Cultivar. Sultani

2019 ◽  
Vol 9 (1) ◽  
pp. 136-142
Author(s):  
Imad Ali Aubied ◽  
Hader Abdalkhadhm Hamzah
Keyword(s):  
Date Palm ◽  
Reducing Sugars ◽  
Block Design ◽  
Fruit Size ◽  
Pollen Grains ◽  
Phoenix Dactylifera ◽  
The Other ◽  
Naphthalene Acetic Acid ◽  
Phoenix Dactylifera L ◽  
Physical And Chemical

This research was conducted in orchard belong to Al-Mahawel date palm station (Abo Sderah) / Ministry of Agriculture located in governorate of Babylon, during the season 2015-2016. Twenty four uniform date palm Phoenix dactylifera. L. Sultani cultivar were used , to study the effect of the pollinator type(P1: Ghannamiakhder , P2: Ghannamiahmer and P3:khukri ), the concentration of Naphthalene Acetic Acid NAA(0 , 50 and 100 ) mg.L-1 and their interaction on fruits setting up , fruits drop and some of physical and chemical characteristics of fruits of date palm Sultani cultivar .Experiment carried out as factorial experiment(3×3) by Randomized Complete Block Design (RCBD) with three replications in each treatment , and the means were compared using LSD level of significant test at P ≤ 0·05. The results can be summarized as that Ghannamiahmer (P2)cultivar and 50 mg.L-1 NAA application showed a significant increase in the fruit setting% , while Khukri cultivar(P3) showed significantly increased fruit size and weight as compared with the other cultivars.Furthermore the cultivar(P1) obtained a significant increase in the bunch weight in Rutab stage as compared with the other cultivars. While the cultivar (P2) with 100 mg.L-1 NAA application showed significant increase in bunch weight in Rutab stage as compared with the other interactions. Ghannamiakhder (P1) cultivar had a significant increase in the fruit content of reducing sugars and non-reducing sugars, while khukri showed significant increase in fruit content of dry matter% and total sugars as compared with the other cultivars.

scholarly journals Palynology of the Genus Stachytarpheta Vahl. (Verbenaceae)

2010 ◽  
Vol 2 (4) ◽  
pp. 27-33
Author(s):  
Olubukola ADEDEJI
Keyword(s):  
Cluster Analysis ◽  
Grain Size ◽  
Evolutionary History ◽  
Pollen Grains ◽  
Pollen Grain ◽  
The Other ◽  
Pollen Grain Size ◽  
Pollen Diameter ◽  
Stachytarpheta Cayennensis ◽  
Exine Morphology

The exine morphology of pollen grains of Stachytarpheta indica (Linn.) Vahl, Stachytarpheta cayennensis (Rich.) Vahl and Stachytarpheta angustifolia (Mill.) Vahl is reported. This study was carried out with a light microscope. Pollen grains from fresh anthers were collected and aceolysed. Statistical analysis used to analyse the data collected include cluster analysis, correlation analysis, similarity and distance indices. The pollen grains are spheroidal to oblate to sub-oblate in shape. They are aperturate, both colpate and porate. Tricolpate types occur most frequently, acolpate, monocolpate, bicolpate and tetracolpate types less frequently. The multicolpate and multiporate attributes in all the species indicate that the genus is not primitive in evolutionary history and this species probably, evolved around in the same time. According to the size, the pollen grains of the genus falls into groups permagna (pollen diameter 100-200 μm) and giganta (pollen diameter greater than 200 μm). S. cayennensis and S. anguistifolia belong to group permagna and S. indica only in the group giganta. This separates S. indica from the other two species. The large pollen grain size in the genus clearly supports the fact that the flowers in the genus are more insect-and-bird pollinated than wind pollinated. The similarity and distance indices of the species showed that S. cayennensis and S. angustifolia are the closest. S. indica is closer to S. angustifolia but farther from S. cayennensis.

scholarly journals EFFECTS OF INDIGENOUS AND FOREIGN POLLINIZERS ON THE YIELD AND FRUIT CHARACTERISTICS OF DATE PALM CULTIVAR KHALAS

2020 ◽  
Vol 51 (1) ◽  
Author(s):  
Munir & et al.
Keyword(s):  
Saudi Arabia ◽  
Date Palm ◽  
Fruit Set ◽  
Block Design ◽  
Pollen Grains ◽  
Dry Weight ◽  
Soluble Solids ◽  
Parthenocarpic Fruit ◽  
Fruit Characteristics ◽  
Palm Trees

This research was carried out at Research and Training Station, Date Palm Research Center of Excellence, King Faisal University, Al-Ahsa, Saudi Arabia during 2017 and 2018 to investigate the effects of indigenous and foreign pollinizers on the yield and physicochemical fruit characteristics of date palm cv. Khalas. Pollen grains of different date palm male pollinizers were collected from different geological locations of Saudi Arabia and Egypt. Fifteen twelve-year-old date palm trees were selected for the experiment, for which five spathes for each palm were selected per replication. The experiment was laid out as a Randomized Complete Block Design with three replicates for each treatment. The findings of the present study showed significant differences among pollinizer sources. Female date palms pollinated with indigenous male pollen grains (Al-Ahsa, Saudi Arabia) exhibited superior results regarding fruit set percentage, parthenocarpic fruit percentage, tamar fruit percentage, fruit drop percentage, total number of fruit nodes per bunch, bunch weight, pulp weight, pulp ratio, seed ratio and pulp:seed ratio, fruit fresh weight, fruit dry weight, fruit length, fruit width, fruit volume, seed weight, seed length, seed width, fruit moisture content and total soluble solids. It is can be concluded that although the response to pollination and fertilization of date palm is species dependent, however, the indigenous cultivar Khalas was more responsive to the local male types than the foreign males for better fruit set, higher yield and best fruit quality traits.

scholarly journals THE POTENTIAL USE OF Ca(NO3)2 TO IMPROVE SALINITY TOLERANCE IN DATE PALM (Phoenix dactylifera L.)

2021 ◽  
Vol 52 (2) ◽  
pp. 445-453
Author(s):  
Saleh M. Alturki
Keyword(s):  
Date Palm ◽  
Net Photosynthesis ◽  
Dry Weight ◽  
Phoenix Dactylifera ◽  
Inhibitory Effect ◽  
Plant Parts ◽  
Salinity Levels ◽  
Almost All ◽  
Saline Solutions ◽  
The Impact

The study was conducted to investigate the impact of Ca(NO3)2 on  different levels of salt-stress in date palm. Three-years-old date palm plants were subjected to four NaCl levels: 50, 100, 150 and 200 mM. The saline solutions were supplemented with 0, 5, 10 and 20 mM Ca(NO3)2. The combined NaCl/Ca(NO3)2 treatments were conducted over a period of 10 weeks. Control plants were only subjected to the four salinity levels with no Ca (NO3)2 addition. Results showed an inhibitory effect of salinity on almost all plants' parameters under investigation, mainly the accumulation of ions such as N, K, Ca, plant dry weight, chlorophyll and net photosynthesis rate. Addition of Ca (NO3)2 in the solution was more beneficial when added in a moderate concentration (10 mM) compared to lower (5 mM) and higher (20 mM) under all salinity levels. The addition of 10 mM Ca (NO3)2 noticeably enhanced chlorophyll content under 50 mM Na Cl (2.5 mg/100 cm2) and 150 mM NaCl (2 mg/100 cm2). In addition, 10 mM Ca (NO3)2 reduced the accumulation of Na and Cl in plant parts. For instance, in trees subjected to 10 mM Ca (NO3)2, Cl content in leaves and stems under 50 mM Na Cl were 0.23% and 0.65%, respectively. On the other hand, Cl content under 100 mM Na Cl and 200 mM Na Cl were lower compared to their corresponding control treatments. It seems that the use of Ca (NO3)2 had ameliorative effects on salt-stressed date palm plants when used with moderate concentrations.

scholarly journals Gonadotrophic Hormones in Pollen Grains of the Date Palm

1960 ◽  
Vol 15 (1) ◽  
pp. 45-49 ◽  
Author(s):  
M. S. El-Ridi ◽  
A. El Mofty ◽  
K. Khalifa ◽  
Lucy Soliman
Keyword(s):  
Luteinising Hormone ◽  
Date Palm ◽  
Follicle Stimulating Hormone ◽  
Pollen Grains ◽  
Pollen Grain ◽  
Stimulating Hormone

1 - Gonadotrophic hormones have been identified to be present in pollen grains powder of date palm including both FSH and LH.2 - The follicle stimulating hormone (FSH) is present in pollen in approximate concentration of 100 I.U./10 grams pollen and the luteinising hormone (LH) about 3-4 I.U./10 grams pollen.3 - These findings confirm the use of pollen grain of the palm by the Bedwins for treating sterility.

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