RUSSIAN WHEAT APHID RESISTANCE IN A WHEAT LINE FROM THE CASPIAN SEA AREA

Seedlings of twenty-six Triticum species from the Caspian Sea area were screened in the greenhouse for resistance to Russian wheat aphid. One test entry, Triticum vavilovii, scored a damage rating of 2 on a 1-6 scale in the initial screening test. In a second replicated test, this line was significa...

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Bibliographic Details
Published in:Cereal research communications 1992-01, Vol.20 (1/2), p.55-61
Main Author: Du Toit, F
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Antibiosis
Biological and medical sciences
Fighting fishes
Fundamental and applied biological sciences. Psychology
Genetics and breeding of economic plants
Genotypes
Infestation
Invertebrates
Nymphs
Pest animals
Pest resistance
Plants
Screening tests
Seedlings
Seeds
Varietal selection. Specialized plant breeding, plant breeding aims
Wheat
WHEAT: Nitrate reductase, markers, selection, resistances, tissue culture, dwarfing genes, acid soil tolerance, wheat blends
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Summary:Seedlings of twenty-six Triticum species from the Caspian Sea area were screened in the greenhouse for resistance to Russian wheat aphid. One test entry, Triticum vavilovii, scored a damage rating of 2 on a 1-6 scale in the initial screening test. In a second replicated test, this line was significantly less damaged than other varieties with a rating of 2.3 compared to a rating of 5.0 for susceptible control entries. Fewer nymphs were produced on T. vavilovii than on the susceptible cv. Betta in an antibiosis test. The efficacy of the screening technique and the use of clip cages in antibiosis tests are discussed.
ISSN:0133-3720
1788-9170