Author(s):

Arun Kumar, Veena Kumari Tudu, Anita Pande, ZA Haider, Varsha Rani, RP Sah, Priya Medha and DK Yadav

Abstract: Oilseed crops occupy a place of prime importance in Indian economy. Rapeseed-mustard is a major oilseed crop grown in India which contains higher fraction of nutritionally undesirable long chain fatty acids especially Erucic acid in oil and Glucosinolate in defatted meal. Development of genotypes with improved quality of oil and defatted meal is of paramount importance and getting top priority worldwide. With this objective 30 genotypes were investigated to estimate the extent and nature of variability (GCV, and PCV), broad sense heritability and genetic advance for eight quality components of oil in Indian mustard (Brassica juncea L.). Variability study revealed that the phenotypic coefficient of variations was invariably higher than their corresponding genotypic coefficient of variations. High phenotypic and genotypic coefficient of variation for all the fatty acids including Oleic, Erucic, Eicosenoic, Palmitic, Linolenic and Linoleic acids, whereas the same were low for oil content and Glucosinolate. All the quality contributing characters viz., Glucosinolate, Oil content, Palmitic, Oleic, Linoleic, Linolenic, Eicosenoic and Erucic acids exhibited high broad sense heritability. Except Glucosinolate and Oil content, all the fatty acids especially Oleic, Erucic, Eicosenoic, Palmitic and Linolenic acids have recorded high heritability coupled with high genetic advance indicating that the control of additive gene effects over these traits. Furthermore, association and path analysis signifies that indirect selection of high amount of Oleic acid, Linoleic acid and higher oil content would certainly reduced the proportion of Glucosinolate, Erucic acid and Eicosenoic acid (undesirable quality components) resulting into improvement in the quality parameters of Indian mustard genotype(s).

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