Genetics of flower colour and glossiness in Indian mustard (Brassica juncea (Coss)

Genetics of flower colour and glossiness of foliage was studied in the crosses involving four parents, RWH-1 (white flowed; RC 1425 (glossy), and RH 30 and RH 7859 (nonglossy and yellow flowers). A segregation ratio of 3 nonglossy: 1 glossy in F₂ generations of different crosses indicated that glossiness is controlled by a single recessive gene. This was confirmedby studying the back-cross generations. Similarly in crosses of yellow and white flower parents a segregation ratio of 15 yellow: 1 white flower in F₂ generations, indicated that flower colour is controlled by two genes where white flower colour is double recessive. This was also confirmed by studying the back-cross generations.