Inheritance of powdery mildew resistance in mung bean. [Vigna radiata (L.) R. Wilczek]

Abstract

In a study of inheritance of powdery mildew resistance, two parents, their reciprocal crosses, F2, B1 and B2 of both crosses were screened against powdery mildew. There were no significant difference between the F1 of Kopergaon x BPMR-145 and it’s reciprocal cross for powdery mildew susceptibility, indicating that the resistance is governed by recessive gene and also absence of maternal inheritance for powdery mildew resistance. The F2 data of both crosses i.e. Kopergaon x BPMR-145 and BPMR-145 × Kopergaon was good fitted in 3:1 (susceptible: moderately resistant) ratio which indicated the involvement of single recessive gene which confirmed from backcrosses data. The moderately resistant plants identified for powdery mildew in F2 should be utilized for development of powdery mildew resistant variety in mung bean. There is need to develop complete resistant donar to powdery mildew disease.