Indian Society of Genetics & Plant Breeding
Thirteen genotypes of rice (Oryza sativa L.) viz., Bandana,
Browngora, Rasi, IET 826, Satabdi, Pusa 312, Panke, Aditya,
IR 36, IR64, IR 50, IR 30and Dular were evaluated for root
characters namely, maximum root length (cm), root volume
(cc), fresh and dry root weight (g), dry shoot weight (g)
and root shoot ratio. The study revealed greater relative
variability for all the root characters under irrigated and
water stress (rainfed) regimes. The genotypes, Dular,
Aditya, IR 36 and Browngora were found to be superior to
other genotypes with respect to ideal root architecture.
Phenotypic coefficient of variation was higher than
genotypic coefficient of variation indicating greater
influence of the environment on these characters. High
heritability accompanied by high genetic advance was
observed for root dry weight followed by root volume and
dry shoot weight indicating importance of additive gene
effects, which may facilitate the adoption of simple
breeding strategies to obtain desirable changes with
respect to these characters.
Keywords: Oryza sativa, root architecture, heritability, genetic advance, additive gene effect
Year: 2012
Volume: 72
Issue: 2
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906
Lakshmi Hijam*, Sujaya Das Dewanjee and K. K. Sarkar info_circle
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