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Inheritance of Powdery Mildew Resistance in Hybrids Involving a Common Wheat Strain Derived from Triticum Timopheevi 1
Author(s) -
Nyquist W. E.
Publication year - 1963
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/cropsci1963.0011183x000300010015x
Subject(s) - powdery mildew , hybrid , mildew , biology , inheritance (genetic algorithm) , horticulture , library science , genetics , computer science , gene
A and Shands (1) reported that the resistance the common wheat strain C.I. 12633 to race 5 of powdery mildew was controlled in the seedling stage by a single partially dominant gene, and in the. adult stage by two other linked genes. The genes governing adult mildew reaction were either the same two genes which governed stem rust resistance or were individually closely linked to them. However, in a reinvestigation of the stem rust inheritance:, Nyquist (6) found that the rust resistance was governed by either one or two linked genes, and that differential fertilization was involved to different degrees in different hybrids. Because of the close linkage between stem rust and mildew resistance, a study of these materials for mildew reaction provided an opportunity to investigate the unusual stem rust results (6) in another way, and also to study the action of the mildew genes in two stages of growth to another physiologic race of mildew. Resistance on the leaf sheath as well as on the leaf blade also was studied in both growth stages.