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Exotic Germplasm for Yield Improvement in 2‐way and 3‐way Soybean Crosses 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/cropsci1970.0011183x001000060022x
Subject(s) - biology , germplasm , yield (engineering) , transgressive segregation , population , transgressive , glycine , agronomy , genetics , gene , quantitative trait locus , demography , materials science , amino acid , sociology , metallurgy , sedimentary depositional environment , paleontology , structural basin
We evaluated homozygous populations froin 2‐way adapted × exotic and 3‐way (adapted × exotic) × adapted soybean ( Glycine max (L.) Merrill) crosses for seed yield. The average yield of our 3‐way populations was significantly greater than the 2‐way population mean, but differences were not significant in some 2‐, 3‐way sets. Mean population performance was generally predictable from parental performance, although a masking inhence of genes from the third parent was observed in the 3‐way crosses. Estimates oC genetic variance for 3‐way populations generally were larger than for 2‐way populations for yield. Transgressive segregation was observed in all populations, but in most 2‐, 3‐way sets, the 3‐way cross produced more of the superior lines for yield than the 2‐way cross.