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Hybrid Performance Among Six‐Rowed Winter Barleys ( Hordeum vulgare L.) Varying in Kernel Size 1
Author(s) -
Crook Wayne J.,
Poehlman J. M.
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/cropsci1971.0011183x001100060015x
Subject(s) - biology , hordeum vulgare , kernel (algebra) , heritability , cultivar , test weight , grain yield , heterosis , horticulture , pollen , hybrid , agronomy , poaceae , botany , zoology , mathematics , genetics , combinatorics
A large‐kerneled, 6‐rowed, winter barley ( Hordeum vulgare L.) cultivar (P 1 ) was crossed as the maternal parent with seven 6‐rowed, winter barley cultivars varying in seed size (P 2 through P 8 ) as pollen parents. The seven F 1 hybrids were compared with the eight parents at Columbia, Mo., in 1968‐69. Heterosis for kernel size was indicated in specific crosses with five of the seven F 1 's exceeding their respective midparents and four of the F 1 's exceeding their respective highparent for both percentage of plump kernels and kernel weight. As an average over all crosses, the F 1 's exceeded the midparent for survival, early maturity, height, lodging, grain yield, tillers per plant, and kernels per spike in addition to kernel plumpness and kernel weight. Correlation data confirm the close association of kernel plumpness and kernel weight as measures of kernel size and the independence of these kernel size measurements from the other agronomic characters studied. The genetic potential for improvement of kernel size and kernel plumpness is demonstrated by heritability estimates of 0.886 and 0.710, respectively, for these two characters.