Fiber and yarn quality as affected by locations, cultivars and their interaction in some Egyptian cotton cultivars
2009
Hussein, K.M.M. | Hassan, A.A.
Five different locations (Damanhor, Tanta, Kafr el Sheikh, Beni-Sweef and El Maragha) were allocated for planting four cultivars, viz. Giza 88, Giza 86, Giza 80 and Giza 90, during 2008 season. Two grades were taken (Good to Fully Good and Good). Randomized complete block design was used. Simple correlation and stepwise analysis were done. The traits studied were micronaire reading, fiber length, uniformity %, fiber strength and short fiber % in raw cotton. Also skein strength, neps count and yarn C.V.% in yarn. The results showed that the effects of locations, cultivars and their interactions were significant with all fiber and yarn traits. The highest skein strength, the lowest neps, and yarn (C.V. %) for all cultivars under GFG grade, were at Damanhor. Giza 88 was the best cultivar in yarn properties. Simple correlation coefficients within each location, cultivar and grade, with fiber properties and skein strength were positive and significant except short fiber, which showed negative correlation. On the contrary, the situation was completely adversed , when yarn C.V. % was considered. The stepwise multiple regression analysis indicated that, the most contributors to skein strength were fiber strength and short fiber. For yarn C.V. %, length uniformity and short fiber were the most ones, at the four cultivars. While at the five locations, the best contributors to skein strength and yarn irregularity C.V. %, respectively, fiber strength, fiber length, length uniformity and short fiber.
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