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Gene Action for Yield Components and Plant Height in a Spring Wheat Cross 1
Author(s) -
Chapman S. R.,
McNeal F. H.
Publication year - 1971
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1971.0011183x001100030022x
Subject(s) - epistasis , biology , backcrossing , dominance (genetics) , inheritance (genetic algorithm) , genetics , gene , test weight , gene interaction , agronomy , horticulture , grain yield
Means and variances for the parental, F 1 F 2 and singlebackcross generations were used to analyze quantitativegenetic variation in the wheat ( Triticum aestivum L.) cross ‘Henry’ × ‘Lemhi 53’'. In both 1967 and 1968, epistatic effects were non‐significant in the inheritance of number of spike lets and kernel weight. Additive gene action had the greatest effect on number of spikelets; both additive and dominance types of gene action influenced kernel weight. In 1967, highly significant epistatic effects were detected in the inheritance of number of heads, yield and plant height. In 1968, epistatic effects were nonsignificant for these traits. When epistatic effects were significant, the metrical value of the F 1 markedly exceeded the value of the higher parent.