Inheritance of low erucic acid in Indian mustard [Brassica juncea (L.) Czern. and Coss.]

Jai Singh; Devendra K. Yadava; Sujata Vasudev; Naveen Singh; Vignesh Muthusamy; Kumble V. Prabhu

Jai Singh Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012
Devendra K. Yadava Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012
Sujata Vasudev Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012
Naveen Singh Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012
Vignesh Muthusamy Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012
Kumble V. Prabhu Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012

Keywords: Brassica juncea, erucic acid, oleic acid, inheritance

Abstract

Genetics of erucic acid content was studied using six generations viz., P1, P2, F1, F2, B1 and B2 derived from the crosses, Varuna × LES-39 and Varuna × LES-1-27.The trait high erucic acid content was partially dominant over low erucic acid content in both the crosses. In both the crosses, adequacy of additive – dominance model suggested absence of non-allelic interactions.The study revealed that selection for low erucic acid would result in isolation of plants with high oleic and linoleic acids and hence, it should be possible to develop high oleic acid lines having low erucic acid content in mustard.