Chlorophyll mutations in mungbean (Vigna radiata (L.) Wilczek).

Chlorophyll mutations in two varieties ('ML-5' and 'K-851') of mungbean (Vigna radiata (L.) Wilczek) were studied severally and in combination following treatment with gamma rays and EMS. Frequencies, spectra and inheritance patterns are reported and discussed. Genotypic differences were observed with regard to frequency and spectrum. Combined treatments produced higher mutation frequencies than individual treatments. Albina and xantha appeared more frequently, relative to other chlorophyll mutations. Inheritance of albina, chlorina, xantha and virescens types in different generations revealed that each of them was monogenically controlled and was recessive in nature.