Maximizing efficiency in sunflower breeding through historical data optimization

Table 4 Broad sense Cullis heritability (\({\text{H}}^{2}\)), variance of female general combining ability (\(\sigma\)²_GCAf), variance of male general combining ability (\(\sigma\)²_GCAm), and variance of specific combining ability (\(\sigma\)²_SCA) for each trait across all years and locations

Trait	\(\text {H}^2\)	\(\sigma\)²_GCAf	\(\sigma\)²_GCAm	\(\sigma\)²_SCA	Ratio \(\sigma ^{2}_{a}/\sigma ^{2}_{d}\)
YLD	0.43	4.28	3.15	2.27	3.27
GM	0.46	0.47	0.28	0.11	6.82
OIL	0.64	1.08	0.90	0.31	6.39

In addition, we calculated the ratio of additive and dominance variances (Ratio \(\sigma ^{2}_{a}/\sigma ^{2}_{d}\)) as \((\sigma ^{2}_{GCAf} + \sigma ^{2}_{GCAm})/\sigma ^{2}_{SCA}\). The traits evaluated were grain yield (YLD), grain moisture (GM), and percentage of oil (OIL). Further details on these calculations can be found in the Additional file 3, Note 3

ISSN: 1746-4811