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Inheritance of Resistance to Common Bunt in Wheat, C.I. 7090 1
Author(s) -
Metzger R. J.,
Schaller C. W.,
Rohde C. R.
Publication year - 1979
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/cropsci1979.0011183x001900030007x
Subject(s) - biology , gene , cultivar , inheritance (genetic algorithm) , resistance (ecology) , genetics , botany , agronomy
The wheat line C.I. 7090 ( Triticum aestivum L.) was shown by previous work to carry an unidentified gene(s) for resistance to many races of common [ Tilletia caries (DC.) Tul. and T. foetida (Wallr) Liro], and dwarf bunt ( T. controversa Kuhn). C.I. 7090 was crossed with completely susceptible cultivars (‘Triumph’ and ‘Elgin’) and with bunt‐host differentials. The F 3 and F 4 progenies of these crosses were analyzed to determine the identity and number of genes involved in resistance. The results showed that a new gene, designated Bt9 was involved and the Bt9 plus Bt7 conferred resistance in C.I. 7090 to 36 of the 41 reported races of common bunt. Inheritance for Bt9 is independent of that for Bt1, 2, 4, 6 , and 7 .