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Effect of Planting Rate and Genotypic Frequency on Yield and Seed Size in Mixtures of Two Wheat Varieties 1
Author(s) -
Chapman S. R.,
Allard R. W.,
Adams Julian
Publication year - 1969
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/cropsci1969.0011183x000900050017x
Subject(s) - biology , sowing , yield (engineering) , agronomy , population , population density , materials science , demography , sociology , metallurgy
Yield of mixtures of the wheat ( Triticum aestivum L .) varieties Baart 46’ and Ramona’ grown in row plantings varied with the frequency of the two varieties and showed significant positive deviations from predictions based on the weighted mean performance of components. This frequency dependent effect was itself dependent on density. The seed size of mixtures showed no such frequency dependent effects although seed size increased significantly at lower population densities