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Inheritance of Pubescence Type in Soybeans: Glabrous, Curly, Dense, Sparse, and Puberulent 1
Author(s) -
Bernard R. L.,
Singh B. B.
Publication year - 1969
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/cropsci1969.0011183x000900020025x
Subject(s) - biology , epistasis , botany , mutant , inheritance (genetic algorithm) , gene , genetics
F 2 and F 3 data from crosses of soybean strains with five aberrant pubescence types and strains with normal pubescence showed that each of the five differs from normal by a single gene pair and that the five loci segregate independently. Four of these genes occur in varieties from eastern Asia: P 1 (glabrous), pc (curly pubescence), Pd (dense, three to four times the normal number of hairs), and P s (sparse, a third to a fourth of the normal concentration of hairs); and the fifth originated as a mutant found in Iowa in 1924: P 2 (puberulent). P 1 (glabrous) appears to be epistatic to the other types, although Pd and P s affect the density of the hair stubs visible on close inspection of glabrous plants. The genes pc and p 2 , affect the form of the hairs independently of the density effects of Pd and P s . Pd and P s interact with each other in an additive fashion in controlling hair density. The reported linkage between P 1 p 1 and R r (seed color) was confirmed.