The genetic constitution of two bread wheat accessions from the International Spring Wheat Rust Nurseries (E 5883 and E 6032) has been studied for reaction to four Indian races of stem rust. Analysis of E 5883 has revealed that for each of the races 15C, 21 and 40 a single dominant gene operates for
Allelism of two genes for stem rust resistance in triticale
β Scribed by S. J. Singh; R. A. McIntosh
- Publisher
- Springer
- Year
- 1988
- Tongue
- English
- Weight
- 297 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0014-2336
No coin nor oath required. For personal study only.
β¦ Synopsis
Inheritance studies involving Coorong and Satu triticales showed that each possessed a single dominant gene for resistance. The genes were allelic or closely linked. The relative frequencies of Sr27 (Coorong gene) and Srsa~ in a sequence of International Triticale Screening Nurseries were similar. However, a significant increase in the frequency of entries with Srsatu occurred in the 17 International Triticale Screening Nursery (ITSN).
π SIMILAR VOLUMES
Using monosomic analysis genes governing resistance in one wheat variety, 'E5883', against stem rust races 15C and 122, were located on specific chromosomes. Against race 15C, a major dominant gene, Sr6, was located on chromosome 2D of 'E5883' with minor modifiers found on chromosomes 4A and 6D. Aga
Two bread wheat accessions, E5008 and E6160, have been genetically analysed for resistance genes effective against Indian cultures of stem rust races, 15C and 122. The inheritance of resistance to each race has been determined from the F1 and F2 of the crosses (resistant parents with the susceptible
Monogenic lines resistant to leaf rust of spring and winter wheats were grown in the world wheatproducing areas from 1970 through 1975. Lines containing the alleles Lr9 (Wi), Lr9 (Tc), and Lrl9 (Tc) were more resistant to the leaf rust pathogen than those containing Lrl (Tc), -1 (Wi), -1,3 (Wi), -2A