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Inheritance of Testa Color Variegation in Peanut 1
Author(s) -
Branch W. D.,
Hammons Ray O.
Publication year - 1979
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/cropsci1979.0011183x001900060010x
Subject(s) - biology , variegation (histology) , locus (genetics) , genetics , arachis hypogaea , phenotype , dominance (genetics) , botany , gene
The inheritance of testa color variegation was investigated in reciprocal crosses between the variegated (red on white) PI 274191 ✕ solid red PI 371965 peanut ( Arachis hypogaea L.) genotypes. F 2 phenotypic segregation was consistent with that of a genetic model for incomplete dominance at one locus, designated V . Microscopic examination showed that the V gene inhibited full cellular development of the outer red epidermal layer of the testa in certain regions. This inhibition exposed the underlying white cellular layer resulting in a variegated pattern. The homozygously recessive locus, v , does not prevent the r 2 locus from producing phenotypes with solid red color testa.