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Effects of Border Row Competition on Strain Performance and Genetic Variance in Soybeans 1
Author(s) -
Thorne J. C.,
Fehr W. R.
Publication year - 1970
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/cropsci1970.0011183x001000050047x
Subject(s) - competition (biology) , biology , yield (engineering) , canopy , variance components , variance (accounting) , agronomy , glycine , maturity (psychological) , statistics , botany , ecology , genetics , mathematics , psychology , developmental psychology , materials science , accounting , metallurgy , business , amino acid
We evaluated the performance of six soybean ( Glycine max (L.) Merr.) strains in three border row competition regimes. Strains ✕ competition regime interaction was significant for yield, but the component of variance was small compared to the component for among strains. Estimates of genetic variance for yield and canopy width were inflated when intergenotypic competition was present. Smaller estimates of genetic variance were observed in intergenotypic competition regimes than in pure stand for maturity and lodging. Competition response for yield was related to maturity, but other factors also were involved.