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Categorization of selected canola Brassica napus L. varieties/ lines for tolerance to natural infestation of aphid Myzus persicae (Sulzer)

Journal Name:

  • Biological Diversity and Conservation

Publication Year:

  • 2013

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Abstract (Original Language): 
Thirty canola Brassica napus L. varieties/ genotypes were field examined for their resistance at natural infestation of aphid to manage the damage due to the insect pests. Data based on aphid incidence and grain yield were recorded to evaluate performance of test material. The results showed that all genotypes in field conditions, exhibited high to low different levels of resistance against field infestation of aphid Myzus persicae (Sulzer) (Homoptera: Aphididae) and produced variable yield after infestation by insect pest. The varieties/ genotypes viz., Rainbow and CON-I showed resistance reaction to pest invasion and gave amplified productivity. These varieties/ genotypes should be popularized in aphid endemic areas and can be used in varietals resistance breeding program. Nevertheless, the varieties/ genotypes Oscar, CAN-9-1 and RM-015/1-1 were highly susceptible to pest and failed to give augmented productivity. These results demonstrate the expression of resistance gene in the genome of tolerant varieties/ genotypes, Rainbow and CON-I which can provide season-long protection from the natural infestation of insects to diminish crop yield losses.
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REFERENCES

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