Variability and interrelationships of traits in synthetic populations of maize

Abstract

Variability and interrelationships of traits in two maize synthetic populations were studied in this paper. Independent trials with 80 entries of S1 as well as their HS progenies were arranged according to an incomplete block design (random model). Several agronomic traits were studied during 2002 and 2003, at two locations. Relatively high heritability and variability of traits were determined in both populations. Genetic correlations between grain yield and all other traits were weak to intermediate. The strongest correlations between S1 and HS progenies were determined for grain moisture and the lowest for grain yield.

U radu je ispitivana varijabilnost i međuzavisnost svojstava u dve sintetičke populacije kukuruza. Nezavisni ogledi sa 80 S1 odnosno HS familija postavljeni su po nekompletnom blok dizajnu (ran dom model). Nekoliko agronomskih svojstava ispitivano je tokom 2002. i 2003. godine na dva lokaliteta. Relativno visoka heritabilnost i varijabilnost svojstava ustanovljeni su u obe populacije. Genetičke korelacije između prinosa zrna i svih ostalih svojstava bile su slabe do srednje jake. Najjače korelacije između S1 i HS potomstava ustanovljene su za sadržaj vlage u zrnu, a najslabije za prinos zrna.