Abstract
An experiment was conducted in the research field of the Department of Plant Pathology, Patuakhali Science and Technology University during February to April 2013 to select Mungbean Yellow Mosaic Virus (MYMV) resistant mutant/variety under natural epiphytotic condition. The screening was made on the six mungbean genotypes including three advanced mutant lines, MBM-07, MBM-21, MBM-88 and three varieties Bina mung-5, Bina mung-6, Bina mung-8 as check, to evaluate their reaction to MYMV at flowering and pod maturity stages. It was observed that at the flowering stage of MBM-21, MBM-88, and Bina mung-6 were found resistant with percent disease incidence recorded from 0.5, 1.0, and 0.5 percent respectively. At the maturity stage, no genotype were found to be immune and the disease incidence varied from the lowest 0.5 % in MBM-21 to highest 26 % in MBM-7. The mutant MBM-21 and variety Bina mung-6 were found moderately resistant with disease incidence ranging from 1 to 10 %. Among the less MYMV infected mungbean mutants, MBM-21 gave the highest yield (1569 kg ha-1) and the lowest yield was in MBM-07 (1183kg ha-1). The mutants MBM-21 completed by the short duration of 61.67 days as compared to check Bina mung-6 (67.33 days). Out of six summer screened mungbean mutants and varieties, MBM-21 exhibited highest resistance in both flowering and pod maturity stage. Therefore, MBM-21 might be selected as a resistant variety against MYMV after further trail in different Agro-Ecological Zones (AEZ) of Bangladesh.
Highlights
IntroductionMungbean is considered as the second most important pulse crop based on both area (54982 ha) and production (34,400 m tons) among the pulse
Mungbean is considered as the second most important pulse crop based on both area (54982 ha) and production (34,400 m tons) among the pulseHorizon e-Publishing Group crops in Bangladesh [1]
Percent disease incidence (PDI) were more in pod maturity stage comparing with varied from 0.5 % in MBM-21 to 26 % in MBM-7 (Table 1 and 3)
Summary
Mungbean is considered as the second most important pulse crop based on both area (54982 ha) and production (34,400 m tons) among the pulse. Horizon e-Publishing Group crops in Bangladesh [1]. The people of Bangladesh consume mungbean as a major source of pulse and uptake only 10 gm of pulses per day which is significantly lower than our neighboring country India [3]. It is grown in three seasons in a year in Bangladesh. That is why mungbean is not gaining popularity among the farmers of Bangladesh
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