SUSCEPTIBILITY OF SOME FABA BEAN GENOTYPES TO Bean yellow mosaic virus (BYMV) INFECTION AND THE POPULATION OF APHID VECTOR

doi:10.12816/ejpb.2019.344263

SUSCEPTIBILITY OF SOME FABA BEAN GENOTYPES TO Bean yellow mosaic virus (BYMV) INFECTION AND THE POPULATION OF APHID VECTOR

Document Type : Original research

10.12816/ejpb.2019.344263

Abstract

The present study aimed to evaluate the susceptibility of ten faba bean (Vicia faba L.) genotypes to infection with Bean yellow mosaic virus (BYMV) and infection with aphid vector (Aphis craccivora Koch). Six promising genotypes and four commercial cultivars were sown at EL-Gemmeiza Agricultural Research Station, El-Gharbia Governorate, Agricultural Research Center, Egypt during the seasons 2016/17 and 2017/18. The results showed that all cultivars under study could be arranged according to their susceptibility to BYMV infection and aphid infestation as follows: Sakha 4; Sakha 1, Giza 716 and Giza 843. The promising genotype X-2339 was more tolerant than Giza 843, while X-2340 was lower susceptible than Sakha 4; in the same time it had the highest mean value for most yield and yield component criteria. So these promising lines could be used in BYMV resistance breeding programs to be released as new cultivars, which possess high yield under BYMV infection. A negative correlation coefficient was found between BYMV infection percentage, disease severity and A. craccivora infestation with 50% flowering, 90% maturity, plant height (cm), first pod height (cm), yield and yield components. While the correlation coefficient between both BYMV infection and Aphid craccivora infestation was highly significant and positive.

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