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Combining ability study of cotton varieties were conducted using a line × tester design with six hybrids, 2 testers (male) and 3 lines (females) for the characters seed cotton yield and related traits. The experiment was conducted in randomized complete block design with three replicates during 2018-19. Data were recorded for seed cotton yield and its related traits. Mean squares from analysis of variance showed large dissimilarity between lines, testers and their crosses for different yield related characters representing the occurrence of heritable variability. The tester variety NIANoori and line CRIS-342 had exhibited comparatively higher array mean and proved to be the better general combiners. SCA dominant gene effects in CRIS-342 × NIA-Noori showed the potential for increasing the number of bolls plant-1 , boll weight and seed cotton yield plant-1 . In cotton breeding programme these selected parent can be used to develop high yielding cotton varieties and hybrids with better seed cotton yield and its related characters.

Saifullah Abro, Zaheer Ahmed Deho, Muhammad Rizwan, Mahboob Ali Sial, Shafiq Ahmed Abro. (2021) COMBINING ABILITY ESTIMATES FOR SEED COTTON YIELD AND ITS RELATED TRAITS USING LINE × TESTER MATING DESIGN IN UPLAND COTTON, , Volume 18, Issue 2.
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