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Near‐Isogenic Analyses of Soybean Pubescence Genes 1
Author(s) -
Specht J. E.,
Williams J. H.,
Pearson D. R.
Publication year - 1985
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/cropsci1985.0011183x002500010024x
Subject(s) - allele , biology , cultivar , yield (engineering) , glycine , horticulture , glycine soja , gene , botany , genetics , amino acid , materials science , metallurgy
Soybean [ Glycine max (L.) Merr.] pubescence morphology can be altered by various qualitative genes. Such alterations have potential for the development of cultivars adapted to unique production environments. Near‐isogenic lines of ‘Clark’ and ‘Harosoy’, which possessed alleles (singly and in combination) for pubescence morphology (i.e., pa 1 , pa 2 , Pb , pc , Pd 1 , Pd 2 , Ps , Ps 2 , and Pd 1 ), were evaluated for their agronomic performance in irrigated vs. nonirrigated experiments for 2 years. Analyses of the data in terms of “allelic means” indicated that the pa 1 pa 2 combination (appressed pubescence) consistently enhanced seed yield in the Clark genetic background, but not in Harosoy. The Pd 1 allele (dense pubescence) had little effect on seed yield in Harosoy, but reduced seed yield in Clark. The latter results contrast with previous studies where the Pd 1 allele increased seed yield in Harosoy, but had no effect in Clark. All other alleles were either deleterious, or at most neutral, in their effects on soybean yield. Only the Pd 1 and Pd 2 alleles resulted in greater plant height; the other alleles had either no effect or reduced plant height. The Pd 1 and pa 1 pa 2 alleles may thus offer adaptive advantages in cultivars for certain production environments.