Stability of visually estimated grain quality of winter wheat in early generations

Abstract

The evaluations were set up at the Lithuanian Institute of Agriculture (LIA) during 2004-2006. Results of visual estimation of grain quality traits (VEGQ) showed that dominant populations were with score 4 in F5 and F6, 43 % in 2004 and 52 % in 2005, respectively. The most frequent populations in F5 were with scores 3 (39 %) and 4 (35%) in the season 2005-2006. The fluctuation of VEGQ scores between years was generally plusminus one score. The populations with stable scores in the cycle F5: F6 accounted for 47.8 % of the total populations evaluated. The populations varying in one score accounted for 43.5 % and those varying in two scores accounted for 8.7 %. VEGQ scores of the populations were mainly influenced by grain quality level of parental varieties. VEGQ scores did not correlate in cycle 2004/2005, but the populations of 2005/2006 highly correlated (r=0.72) by VEGQ scores. .

Keywords

• visual grain quality
• winter wheat
• breeding populations