تاثير مصدر اللقاح في التطور الجنيني لأزهار نخيل التمر Phoenix dactylifera L. صنفي الحلاوي و الساير

Abstract EN

The present study was carried out in a private orchard with the objective of studying the effect of pollen source on embryogenesis of the date palm flowers cvs Hillawi and Sayer.

The results showed that, the pollen source Ghannami Akhder led to asignificantly higher length and width of the ovary and the ovule reaching ( 1931.1, 1707, 581.3, 448.1) μm respectively, in particular in the CV.Hillawi.

the highest increase in those same characteristics (1959.6, 1776, 609.9,470.1) μm respectively, Fourty five days after from pollination increased significantly in those same characteristics ( 3596.1, 3354, 943, 657.4) μm respectively.

the results showed that the growth and development of the flower and the timing of fertilization depends on the type of pollen source.

For the CV.

Hillawi and Sayer the growth of pollen tube and fertilization occurred two days after pollination for both cvs, Using the pollen source Ghannami Akhder, and three days for the female flowers pollinated with Smasmii, nine days after pollination, the growth and development of one carpel ovule whereas the decay of carpel ovules for female flowers pollinated with pollen Ghannami Akhder However, the decay of other carpels occurred after nine days from pollination for flowers pollinated with the pollen source Smasmii.

Fourty five days after pollination, there was a significant increase in length and width of the core of the fruit and the seed, furthermore, and there was a decrease in tannin cells number and increasing the sizes