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Heterosis in Spring Wheat 1
Author(s) -
Walton P. D.
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/cropsci1971.0011183x001100030033x
Subject(s) - diallel cross , heterosis , biology , cultivar , yield (engineering) , spring (device) , agronomy , horticulture , botany , hybrid , mechanical engineering , materials science , metallurgy , engineering
Two complete diallel crosses, with eight and five parents, were used to study the expression of heterosis in spring wheat cultivars ( Triticum aestlvum L.) of Canadian, Mexican and American origin. In both trials general combining ability was important for yield and yield components, as well as for certain morphological characters and for different stages of development. Only in the five‐parent diallel cross was specific combining ability measurahle for yield. Evidence indicated that season by F 1 progeny interaction was associated with the expression of heterosis.