Inheritance of seed coat colour in Indian mustard (Brassica juncea)

Inheritance of seed coat colour in Indian mustard (Brassica juncea)

2000

A:PS

A field experiment was conducted during 1998-99 in Rajasthan, India to elucidate precisely the inheritance of seed coat colour in some cultivars of Indian mustard. Seed colour data were collected for the P1, P2, F1 (including reciprocals), F2, BC1 and BC2 generations of 6 crosses: TERI (OE) M 21 x Varuna, TERI (OE) M 21 x PCR 7, TERI (OE) M 21 x RH 30, TERI (OE) M 08 x RH 30, ZEM 1 x RH 30, ZEM 1 x BIO 902, TERI (OE) M 21 x BIO 902; F3 data were collected for 4 of the crosses.Seed coat colour of the F0 seeds resembled that of the mother plant, indicating the action of maternal cytoplasm. The F1 plants of all the crosses produced brown seeds, indicating dominance of brown seed coat colour over yellow. In the F2 generation, seeds with coat colour ranging from reddish brown to dark brown were all grouped together into one class (brown). F2 segregation data indicated that yellow seed colour is under the control of 4 recessive genes in 4 of the crosses and 3 recessive genes in the other 2 crosses.

v.70(11):784-785, INDIAN JOURNAL OF AGRICULTURAL SCIENCES

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