Premium
Inheritance of Three Chlorophyll‐Deficient Mutants of Common Wheat 1
Author(s) -
Williams N. D.,
Joppa L. R.,
Duysen M. E.,
Freeman T. P.
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/cropsci1985.0011183x002500060030x
Subject(s) - mutant , biology , ethyl methanesulfonate , genetics , gene , phenotype , chlorophyll , diallel cross , microbiology and biotechnology , botany , hybrid
Simply inherited chlorophyll‐deficient mutants are useful in genetic and cytogenetic experiments as markers for specific chromosomes or chromosome sites and in studies of photosynthesis. Three chlorophyll‐deficient mutant lines, CD2, CDS, and CD4, were obtained in the hexaploid wheat ( Triticum aestivum L.) line ND496‐25 by treating seed with ethyl methanesulfonate. Inheritance of mutant phenotype was studied in the F 2 and F 3 of crosses of the mutant lines with ND496‐25. Allelism and linkage were studied in the F 1 , F 2 , and F 3 of a diallel cross of the three mutant lines. Each of the mutant phenotypes appeared to be conditioned by a single recessive nuclear gene. Mutant genes of the three lines appeared to segregate independently. The CDS chlorina mutant was well expressed and easily classified from seedling emergence through maturity. The mottling phenotype of the CD2 and CD4 mutants could be classified only after heading. The CD4 mutant was poorly expressed in the greenhouse. The CDS mutant should be an excellent genetic marker and useful for studying photosynthesis. The CD2 and CD4 mutants should have limited usefulness as genetic markers.