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Inheritance and Distribution of Grass‐Dwarfing Genes in Short‐Statured Wheats 1
Author(s) -
Fick G. N.,
Qualset C. O.
Publication year - 1973
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/cropsci1973.0011183x001300010010x
Subject(s) - dwarfing , biology , phenotype , dwarfism , gene , inheritance (genetic algorithm) , genotype , poaceae , genetics , botany
The inheritance of the grass‐dwarf phenotype was studied in three crosses of wheat ( Triticum aestivum L.) involving the varieties ‘Ramona 50,’ ‘Nainari 60,’ and ‘Olesen’ crossed with grass‐dwarf ‘UCD 6914.’ F 1 and F 2 data indicated that grass‐dwarfing genes D 1 and D 2 in the Ramona 50 and Nainari 60 crosses and D 1 , D 2 , and D 3 in the Olesen cross interact to produce grass‐dwarf plants. Limited evidence suggested that grass‐dwarfing genes also influence height of plants of a normal phenotype. UCD 6914 and ‘Cheyenne’ were two of several varieties found to be useful as tester genotypes for detecting the presence of grass‐dwarfing genes among varieties of unknown genotype. Eleven of 20 short‐statured selections from several countries were identified as carrying genes which condition the grass‐dwarf phenotype. The possibiliity that semi‐dwarf varieties may have been derived from variants of the grass‐dwarf type is suggested.