Certain changes in phenolic compounds for date palm (Phoenix dactylifera L.) of seeded and parthenocarpic fruits (cv. Hillawi)

Hanoon Falih, Batool; Abdul-zahra, Muntaha

doi:10.33762/bagrs.2011.57062

	Certain changes in phenolic compounds for date palm (Phoenix dactylifera L.) of seeded and parthenocarpic fruits (cv. Hillawi)
Basrah Journal of Agricultural Sciences
Article 1, Volume 24, Issue 2, 2011, Pages 1-13 PDF (0 K)
DOI: 10.33762/bagrs.2011.57062
Authors
Batool Hanoon Falih; Muntaha Abdul-zahra
Abstract
A study was conducted on changes in phenolic compounds for seeded and parthenocarpy date palm fruit c.v. Hillawi during different growth stage ,The results showed that parthenocarpic fruits content of tannins was high in all stage except first stage of growth (at the eight week after pollination),tannins content 0.22% and 0.18% in parthenocarpic and seeded fruits respectively . were seeded fruit enter log phase of growth the tannin content percentage increased and reached maximum value Kimri stage of (0.22%) at 10th week after pollination , Then the tannin content decreases till it reached the lowest value at in Tamer stage (18th week after pollination) , As for ,parthenocarpic fruit there was appeared significantly at log phase of growth (10th week after pollination and reached maximum value at 13th weak after pollination for reach 0.44% ,then the tannin content declined rapidly and steady at 14th until 15th week after pollination ,then , decreased tannin content at entered it in Khalal stage and continue antil the Tamer stage (29th week after pollination to reach ,the lowest value o.19%. As for polyphenol oxdase Enzyme (ppo) appeared activity at eight week after pollination in both seeded and parthenocarpic fruits and high significantly . Then ppo Enzyme gradually 13th week after pollination (end Kimri and began Khalal stage ) , at enter seeded fruits Khalal stage ppo activity increased to reached their maximum value at 14th week after pollination , Then ppo activity gradually decreased till the entered seeded fruits tamer stage . As for , parthenocapic fruit there was self action for seeded fruits in Enzyme activity beginning from 10th week after pollination because delay growth parthenocapic fruit .

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