VEGETOS: An International Journal of Plant Research & Biotechnology
(Society For Plant Research)

Research Articles


Volume: 33, Issue: 3, September 2020

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Pub Email:
Page Visits: 157

Doi: 10.1007/s42535-020-00122-9
Doi Link:
First Page: 430
Last Page: 434
Published: 13 May, 2020

Genetic components and Vr–Wr graphical analysis using a diallel set of crosses involved biotic stress tolerance parents in rice


To determine the genetic components of various agro-morphological and grain quality traits in rice, nine genotypes were crossed in diallel mating design. Vr–Wr graphical analysis and average degree of dominance revealed that presence of overdominance for all the studied traits, suggest that selection may be effective in a later generation. Estimates of genetic components such as D, H1 and H2 on traits under study were controlled by both additive and non-additive gene action. Narrow sense heritability was low for all the traits due to preponderance of non-additive gene action. These findings could help rice breeders to improve grain yield and contributing traits along with grain quality by appropriate selection.



Blast resistance, Diallel, Hayman’s, Gene action, Grain yield, Quality


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Acknowledgements :

Author Information:

Karthika Gunasekaran
Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore, India
Rajeswari Sivakami
Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore, India

Govintharaj Ponnaiah
Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore, India

Robin Sabariappan
Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore, India

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