A primary study on Flower and Fruit abscission in Pistacia atlantica subsp. mutica (Banah)

Document Type : Scientific article

Author

Scientific Board Member, Research Institute of Forests and Rangelaneds, Tehran, I. R. IRAN.

Abstract

Banah (Pistacia atlantica subsp. mutica) is an Iranian endemic pistachio species located throughout the western, southern and central rocky highlands. Alternate bearing along with parthenocarp fruit production is a common specification of Pistacia species such as Banah. Normally, the rate of male to female individuals is 30-50%. In this study, open pollinated flower samples were collected at anthesis, four and seven weeks after. Flower and fruit samples were prepared to dye with aniline blue and tolueden blue O, respectively. seven-week-old ovules were empty (parthenocarp) grown up to fruit harvest periode. 17% of abnormal fruits were undertaken a sort of either disable embryo or abnormal andosperm leading to ernpty or half seeded fruits. A most conspicuous abortion was related to strile florets (50%) located in lower part of influoresence branchlets. Many of strile florets had no embryo sac or an empty one and/or an aborted embryo sac. Thus, about 3% of Banah pistils were normally fertilized and reached to mature stage as a viable fruit. In this research the pollen-pistil interaction in relation to abnormal fruit and flowers ending to abortion or abscision were studied.

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References

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