ROLE OF CYTOPLASM TO INHERIT TRAITS OF SUNFLOWER SEEDS

D. Al-Assafi, Radhi; A.  Abed, Ziyad; M. Elsahookie, Medhat

	ROLE OF CYTOPLASM TO INHERIT TRAITS OF SUNFLOWER SEEDS
The Iraqi Journal of Agricultural Science
Article 1, Volume 42, Issue 1, 2011, Pages 13-21
Authors
Radhi D. Al-Assafi; Ziyad A. Abed; Medhat M. Elsahookie
Abstract
To determine the role of cytoplasm organelles of egg cell of sunflower to inherit seed characteristics to the F1 seeds, crossing was undertaken between two cultivars; Akmar and Shumoos in both ways. Crossing was facilitated by applying GA3 to heads of female plan¬ts .In the second season , seeds of both cultivars and the two crosses were grown in the field of the Dept. of Field Crop Sci. / College of Agric / Univ. of Baghdad in spring and fall seasons of 2010.At physiologic maturity, measures were taken on plants of each genotype . Heads were taken, dried and weighed.The cross Shumoos x Akmar gave highest leaf area (1.15 m2/plant) , chlorophyll content (46.2 SPAD) , and 553 g/plant total dry matter. This cross gave 1824 seed/head, 102.5 mg/seed and 7.2 t/ha seed yield. However, both crosses gave same results of inheriting seed characteristics in the F1 and F2. This include , seed weight , color , striping, and seed coat thickness.It was thought that mitochondria was responsible for inheriting seed traits . Inheriting these traits in the F1 seeds is clear due to dominance , but the explanation of inheriting same traits to the F2 was vague .This suggest the necessity to expand this study in the future to involve several cultivars of wide seed variations and studying seed traits in the F1 to F3 on enough samples of plants.This is quite important when developing sunflower hybrids of desired F1 seed traits.

Statistics Article View: 76 PDF Download: 10