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Chromosomal Location of a Dwarfing Gene in ‘Tom Thumb’ Wheat Derivative by Monosomic Analysis 1
Author(s) -
Morris Rosalind,
Schmidt J. W.,
Johnson V. A.
Publication year - 1972
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/cropsci1972.0011183x001200020032x
Subject(s) - dwarfing , biology , genetics , gene , short stature , botany , endocrinology
A winter wheat line of Triticum aestivum L. em. Thell. (aestivum group) segregating for a semidominant gene for dwarf stature from ‘Tom Thumb’ was crossed with ‘Wichita’ or ‘Cheyenne’ aneuploids. The F 1 progenies segregated into two height groups in a ratio of 1:1. F 2 disomic and noncritical monosomic progenies segregated in a ratio of 1 short:2 intermediate:1 tall. Monosomic analyses involving all chromosomes except 2A, 4B, and 6B indicated that the dwarfing gene was located on 4A. The heterozygous and hemizygous states of the gene had the same effect on height.