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Selection for Seed‐Filling Period in Soybean 1
Author(s) -
Smith James R.,
Nelson Randall L.
Publication year - 1986
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/cropsci1986.0011183x002600030005x
Subject(s) - loam , biology , selection (genetic algorithm) , mollisol , yield (engineering) , agronomy , field experiment , horticulture , soil water , ecology , materials science , artificial intelligence , computer science , metallurgy
The duration of seed fill may be a physiological indicator of soybean [ Glycine max (L.) Merr.) genotypes possessing high yield capabilities. In order for it to be of use in yield improvement programs, it must be highly heritable and be highly correlated with yield. The objective of this research was to determine if early‐generation classifications for seed‐filling period (SFP) can be maintained in later generations. Divergent selection for reproductive period was conducted on F 2 single plants created by crossing ‘Williams’ ✕ ‘Kanrich’. Divergent selection for SFP was carried out in the F 4 on single plants and in the F 5 on unreplicated plant rows. Selected F 4 ‐derived lines were grown at Urbana, IL in the F 6 (1982) and F 7 (1983) in replicated field plots to be evaluated for SFP classification. Soil classifications for the 1982 and 1983 experiments were a Drummer silty clay loam (Typic Haplaquall) and a Catlin silt loam (Typic Argiudoll), respectively. There was no relationship between reproductive period in the F 2 generation and SFP in subsequent generations, but positive associations between SFP classifications in early generations (F 4 and F 5 ) and SFP classifications in later generations (F 6 and F 7 ) were found. This suggests the possible use of SFP in yield improvement programs for soybeans.