Premium
Effectiveness of Single Plant Selection During Successive Generations of Inbreeding in Soybeans 1
Author(s) -
Wilcox J. R.,
Schapaugh W. T.
Publication year - 1980
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/cropsci1980.0011183x002000060034x
Subject(s) - biology , cultivar , selection (genetic algorithm) , inbreeding , yield (engineering) , agronomy , horticulture , botany , population , materials science , demography , artificial intelligence , sociology , computer science , metallurgy
Phenotypically superior plants were selected in the F 2 through the F 4 generations in 12 soybean [ Glycine max (L.) Merr.] crosses, three among superior soybean cultivars and nine between those cultivars and plant introductions. Seed from the selected plants within each cross was composited to form the bulk for the succeeding generation of selection. The objective was to determine how effective single plant selection would be in the heterogeneous bulk populations. Visual selection for superior plants from the heterogeneous populations had no effect on seed yield. selected F 4 bulks matured later than the unselected F 2 populations in 7 of the 12 crosses and were taller than unselected F 2 populations in 9 of the 12 crosses. Selected F 4 bulks from crosses among the three cultivars lodged more than their F 2 progenitors; however, only three F 4 bulks from crosses between cultivars and plant introductions lodged more than the unselected F 2 populations. The data indicated that even though tall, late maturing plants in these bulk populations appeared to be phenotypically superior, they were not superior in yield to the unselected bulks.