Claim · model-written summary
A regression line cutting the Wr axis above the origin point for several traits indicates an additive effect of genes with reduced dominance.
Zea maysVerbatim
e0“Six inbred lines of maize (ZP-595, DKC-6418, DK-17, ZP-694, Sgporo from panan and UN 4652) were included in a half diallel cross”
e4“the regression line cutting the Wr axis above the origin point”
e5“an indication of the additive effect of genes with a decrease in dominance”
Title
Genetic Architecture of Grain Yield and Some of Its Components Traits in Maize (Zea mays L.)
mohammed Al-Falahy; Kh. Al-Zubaidy; Kh. M. Al-Zubaidy; et al. Tikrit Journal for Agricultural Sciences 2020. doi:10.25130/tjas.20.2.2
Other claims from this paper (10)
- Observation Mean squares of the genotypes (parents and hybrids) were highly significant for all traits.
- Observation The regression coefficient of Wr on Vr was significant for all traits except leaf area.
- Mechanism The regression coefficient of Wr on Vr indicates epistasis in the inheritance of these traits.
- Observation Additive and dominant components were significantly different from zero for all traits.
- Mechanism Additive and non-additive gene action contribute to the inheritance of these traits.
- Mechanism A regression line crossing the Wr axis under the origin point for grain traits indicates over dominance.
- Observation Narrow sense heritability was low for number of rows per ear, grains per ear and grain yield per plant.
- Observation Narrow sense heritability was low for 300-grain weight and shelling percent.
- Observation Narrow sense heritability was moderate for upper ear height and leaf area.
- Observation Narrow sense heritability was high for days to silking, days to tasseling and plant height.