Premium
Inheritance of Some Bloomless and Sparse‐bloom Mutants in Sorghum 1
Author(s) -
Peterson G. C.,
Suksayretrup Krittika,
Weibel D. E.
Publication year - 1982
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/cropsci1982.0011183x002200010014x
Subject(s) - bloom , biology , sorghum , genetics , allele , gene , mutant , phenotype , agronomy , ecology
The epicuticular wax exudate of sorghum [ Sorghum bicolor (L.) Moench] is known as bloom and appears in three forms: bloom, sparse‐bloom, and bloomless. Normal sorghum hybrids express the bloom phenotype. Mutant sources of sparse‐bloom and bloomless have been discovered. To determine the number of gene loci that condition the sparse‐bloom and bloomless phenotypes and to determine the relationship among these mutants, four sparse‐bloom and five bloomless sorghum lines were crossed in various combinations, and in combination with two normal bloom lines. Homozygous recessive alleles at two different loci conditioned the expression of bloomlessness. These genes were designated as bm 1 and bm 2 . Expression of sparse‐bloom was governed by homozygous recessive alleles at a minimum of three loci. These genes were designated h 1 , h 2 , and h 3 . The bloomless and sparse‐bloom genes were not allelic and segregated independently. Sorghum breeders should develop parental lines containing the same bloomless or sparse‐bloom genes to facilitate the production of bloomless or sparse‐bloom hybrids.