Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094
November 2017 Vol. 6(11): pp. 381-386
Copyright © 2017 Global Advanced Research Journals
Full Length Research Paper
Genetic gain of selection for cell membrane thermostability in bread wheat (Triticum aestivum L.)
Ebaid M. A. Ibrahim
Department of Genetic, faculty of agriculture, South valley university, Qena, Egypt.
Accepted 10 November, 2017
The experiment was conducted in 2015/2016 season at research farm of South Valley University, Qena, Egypt to measure the response to selection for cell membrane thermostability (CMS) and yield component in F4 generation in bread wheat under normal and heat stress conditions using 12 families six out of them were derived from across between Giza-168 x sids-12 (population 1) and the other six derived from Shandweel-1 x Qena-25 advanced lines (population 2). The observed response to selection for CMS was 48.63 and 36.68 in the F4 selected families under normal and late sowing date respectively. The means of grain yield of high and low CMS F4 selected families as well as F4 bulks were ranged from 2.20 to 3.37 g in population 1 and 2.24 to 3.15 g in population 2 in the first sowing date while in the second sowing date were ranged from 1.56 to 2.73 g in population 1 and 1.49 to 2.51 g in population2. Significant positive correlated response to selection for grain yield and 1000-grain weight was obtained in the first and late sowing dates of the two populations. Generally, the observed responses to selection for CMS were greater than the predicted responses indicating the inheritance of those traits studied were controlled with dominant gene effects.
Keywords: cell membrane, bread wheat, Triticum aestivum L.