Genetic correlations for more important traits between S1 and HS families in two composites of maize (Zea mays L.)
Year: 2001
Type: article
Abstract: Genetic correlations for more important agronomic traits between S1 and HS families of two composites of maize (Composite B and M) were investigated. For the grain yield genotypic correlation between S1 and HS families in Comp. B was significant, medium strong (0,359*), but too low for predictable purposes. Greater correlation for the grain yield was obtained in Comp. M, it was strong and highly significant (0,663**). Correlations for grain yield were lower than for the other investigated traits in both composites. For the ear height and 1000 kernel weight these correlations were higher in Comp. B, while for the rest of the traits they were greater in Comp. M, indicating greater share of the additive in the total genotypic variance in this composite. As far as the grain yield is concerned, combined S1-HS selection should be applied only in the Comp. M, based on the strong, highly significant correlation between investigated families. In Comp. B this is not the case. For this composite, alternative procedure, for the simultaneous improvement of the population per se and its combining ability, is first to apply S1, and after that HS selection, but with very low intensity (about 30%). .
Institution: Maize Research Institute Zemun Polje
Language: English
Topic: Genetics and Plant Breeding
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W2519124898