Indian Society of Genetics & Plant Breeding

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REPORT OF AN UNSTABLE GENE SYSTEM IN BRASSICA /UNCEA L. COSS &: CZERN VAR. RLM 198

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An anthocyanin containing mutant was induced by 0.5% EMS treatment in Brassica
juncea L. Coss &It Czern. var. RLM 198 in Ml generation. This mutant had purple
coloured anthocyanin sectors on green leaves giving the plant a varie~ated phenotype.
The mutant phenotype appears to be under the control of an unstable gene system
or a transposable element system as evident by lack of consistent genetic segregation
pattern in subsequent generations, somatic variegation, appearance of new allelic
forms, stable green revertants and putative germinal revertants. Usefulness of these
mutants in gene cloning strategies and in elucidating the role of anthocyanin pigment
as U.V. protectants is discussed.
 

Keywords: Brassica juncea, unstable gene system, anthocyanin pigment, EMS induced mutant.

Info

Year: 1997
Volume: 57
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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