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Genetic Studies of Self‐Incompatibility in Carthamus flavescens Spreng 1
Author(s) -
Imrie B. C.,
Knowles P. F.
Publication year - 1971
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/cropsci1971.0011183x001100010002x
Subject(s) - carthamus , biology , allele , pollen , botany , dominance (genetics) , locus (genetics) , interspecific hybridization , genetics , gene , hybrid , traditional medicine , medicine
The inheritance of self‐incompatibility was studied in Carthamus flavescens Spreng., a weedy relative of C. tinctorius L. (cultivated safflower). C. flavescens was found to have a single‐locus sporophytic system of selfincompatibility with at least six alleles at the locus. Data from intercrosses among C. flavescens plants and F 2 and F 3 generations of interspecific crosses supported the hypothesis of dominance in the pollen and independent action of alleles in the style. The allele for self‐compatibility, S f , in C. tinctorius was intermediate in the dominance range of the self‐incompatibility alleles identified in C. flavescens . There was evidence that dominance relationships were temperature sensitive. Considerable nonhomology of S alleles in C. flavescens and C. oxyacantha M.B. was indicated.