دراسة مقارنة لتأثير حبوب لقاح نخيل التمر (الذكرية على صفات ثمارPhoenix dactylifera L.) بعض الأصناف الأنثوية.

Abstract

Pollinisation is one of the most important phases in date's life time. Though, there are a lot of female palm trees and a small number of male palms, the pollinisation on process remains sufficient for all. And the most important thing is to do different studies before the pollinisation process. Thus, the essential research in this dissertation are montioned below: The morphological study of the quantity and quality of male and female palm. The morphological study and the micrometrical study of spath and pollen grains: The results showed a distinct difference between male palm in many features and they differ from one to another. Set percentage: during the study it has been viewed that there is a big influence of cultivars; That is to say, there is receptivity between pestilate and pollen grain. So the percentage of the set is affected by pollen by compatibility or non-compatibility with female bud. The physical characteristics of dates: The results showed that the different sources of pollen grain have high significant difference and it gave us a semi stable diameters in both seasons even though there was unstable compatibility between the cultivars and elite males. Identifying the chemical component of the seven studied cultivars: the fruits dates has affected by pollens and gave us different percentages in chemical components because the difference in pollen and therefore, this helps us in knowing the kind of pollen grains which has the best product with a particular cultivars. Contrary to which has a certain percentage of fiber and sucrose didn't affect by the pollen grains. On the base of this research we con clued that this study has gave a concerning jump in the production of dates by quality and quantity. Good manipulation of the natural and chemical characteristics of dates, we must control the process of pollination by determining the kind of pollen for each female cultivars.