PERFORMANCE, HETEROSIS, COMBINING ABILITY AND PHENOTYPIC CORRELATIONS IN GRAIN SORGHUM (SORGHUM BICOLOR (L.) MOENCH)
Abstract: Twenty four grain sorghum crosses were developed from six introduced cytoplasmic male sterile lines (A-lines) and four restorer lines (R-lines) in 2003 season. Thirty five grain sorghum genotypes (twenty four crosses, ten their parents and hybrid Shandaweel-6 as check) were evaluated at Shandaweel Agric. Res. Station in 2004 and 2005 summer seasons. The obtained data showed that highly significant differences between years for all the studied traits except for 1000 grain weight which were insignificant. Moreover, highly significant mean squares were found due to genotypes, crosses, parents, parents vs. crosses, males, and males x females interaction for all the studied traits. Some crosses were earlier than its parents and most of the crosses were heavier in 1000 grain weight than the best parents. Moreover, all crosses were taller, higher in number of grains per panicle and higher in grain yield per plant than the best parents in 2004, 2005 and combined over two seasons. Both of additive and non-additive gene effects were important in the inheritance of all studied traits. The additive gene effect played the major role in the inheritance of plant height, 1000-grain weight and grain yield per plant. The female line ICSA-155 and the male line MR-812 were good general combiners for plant height, Number of grains per panicle and grain yield per plant. Some crosses showed positive and highly significant SCA for grain yield per plant and number of grains per panicle. Positive and highly significant phenotypic correlations were detected between grain yield/plant and plant height as well as number of grains per panicle. However, negative and significant correlations was obtained between grain yield and days to 50% flowering.
Publication year 2007
Pages 389-406
Availability location 9 شارع الجامعة- الجيزة
Availability number
Organization Name
serial title Egypt. J. of Appl. Sci
Author(s) from ARC
Agris Categories Agriculture - General aspects
AGROVOC
TERMS		 Heterosis. Sorghum bicolor.
Publication Type Journal
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