Screening of yard long bean genotypes for resistance to legume pod borer, Maruca vitrata F.

Abstract

The research work on the evaluation of yard long bean genotypes for resistance to legume pod borer, Maruca vitrata F. was carried out in two consecutive seasons viz., kharif 2015 and rabi 2015-16 in randomized complete block design (RCBD) in the field of the Department of Entomology, Bangladesh Agricultural University (BAU), Mymensingh and chemical analysis of sugar, protein and phenol of yard long bean were carried out at Bangladesh Institute of Nuclear Agriculture (BINA), Professor Mohammad Hossain Central Laboratory and laboratory of the Department of Biochemistry and Molecularbiology, Bangladesh Agricultural University (BAU), Mymensingh. Nine genotypes of yard long bean were evaluated and reacted distinctly to M. vitrata with significantly different levels of infestation to flowers, pods and yield. The genotype Long Red Mollika was categorized as moderately resistant to legume pod borer in both kharif and rabi seasons. Genotype YL 305 was found susceptible in both the seasons. The plant attributes, both vegetative and reproductive, of yard long bean did not show any significant correlation in favour of resistance to M. vitrata. Yard long bean genotypes also did not show resistant reaction to M. vitrata in respect of sugar and phenol but particularly protein showed antibiosis against M. vitrata.
 J. Bangladesh Agril. Univ. 16(3): 424–428, December 2018

Assessing high-yielding cowpea varieties for bacterial blight resistance in Bangladesh: A step towards an environment-friendly and sustainable solution

“…The reason for disease incidence variation could be due to differences in environmental conditions between the seasons (weather data in Appendix 1 ), as wind and rainfall spread bacteria from diseased plants by raindrops, plant to plant contact, and insect transmission ( Moretti et al, 2007 , Sikirou and Wydra, 2008 , Ganiyu et al, 2017 , Durojaye et al, 2019 ). Here, it is essential to mention that Kharif is the primary season of cowpea cultivation in Bangladesh ( Ahmed et al, 2018 ). Moreover, as a seed-borne disease, seed inoculation treatment can provoke the bacterial load to spread.…”

“…In Bangladesh, cowpea is cultivated for grains (shelled green or dried), pods, or leaves used for hay, silage, and green manure ( Rakibuzzaman et al, 2019 ). It is usually the first crop collected before the cereal crops are ready and therefore is referred to as a “hungry-season crop” ( Carvalho et al, 2017 , Ahmed et al, 2018 ). Worldwide over 12 million ha of land are under cowpea cultivation, with gross production of about 6.9 million tons of grains ( Durojaye et al, 2019 ).…”

Evaluation of Yard-long Bean Genotypes at Varied Sowing Dates in the Sylhet Region, Bangladesh

“…Moreover, this region got huge fallow land could be brought under cultivation. Farmers sometime cultivate this crop without any prior knowledge and ended up with a very low yield although there are opportunities to improve the production [9,10].…”