Indian Society of Genetics & Plant Breeding

Genetic insights into fatty acid components of traditional Indian rice (Oryza sativa L.) landraces from Chhattisgarh

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Knowledge about the contents and type of fatty acids (FAs)
in rice bran is beneficial, particularly from a nutritional and
health standpoint. An experiment was conducted to assess
the genetic variability and diversity for FA components in
215 rice landraces during
kharif 2015 and kharif 2016 by
following the RCB design with two replications. Palmitic
(C16:0), oleic (C18:1) and linoleic (C18:2) were the major
fatty acids ranging from 12.59% to 20.25%, 37.60% to 49.17%
and 31.55% to 44.67%, respectively. Analysis of variance
revealed significant differences in all the FA components
except for linolenic acid. Results showed that environmental
factors play a significant impact on the expression of FA
contents. Fatty acid components showed intermediate to
low genotypic and phenotypic coefficient of variation,
intermediate to high heritability and low to moderate genetic
advance as percent of the mean. Oleic acid content was
negatively correlated with palmitic acid, stearic acid, and
linoleic acid contents. Principal component analysis and
cluster analysis discriminated the 215 rice landraces into
five main groups with a major contribution of oleic acid,
linoleic acid, and palmitic acid contents. Landraces
Kadamphool, Ratanchudi and Bathrash possessed the
highest amount of oleic acid/linoleic acid ratio. Information
generated through this study will be functionally useful in
developing rice varieties having high-quality bran oil.

Keywords: Bran oil, fatty acids, genetic variation, landraces, rice


Year: 2019
Volume: 79
Issue: 4
Article DOI: 10.31742/IJGPB.79.4.2
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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