Genetic Variation, Correlation and Metroglyph Analysis in Rice (Oryza sativa L.) for Grain Yield Characters
D. Venkata Sravani *
Sam Higginbottom University of Agriculture Technology and Sciences (SHUATS), India.
Vinay Tiwari
Sam Higginbottom University of Agriculture Technology and Sciences (SHUATS), India.
G. Roopa Lavanya
Department of Genetics and Plant Breeding, Sam Higginbottom University of Agriculture Technology and Sciences (SHUATS), India.
*Author to whom correspondence should be addressed.
Abstract
Rice is the only cereal crop cooked and consumed mainly as whole grains, and quality considerations are more important. Rice has been reported to possess diverse therapeutic properties capable of treating diabetics to neurotic ailments as evidenced by ancient literatures apart from its nutritional importance as a major source of calories for a majority of the world population. The present investigation was taken up to study the total of 20 lines of rice including a check variety were evaluated in randomized block design for genetic variability, heritability and genetic advance by using 13 quantitative traits by metroglyph and index score method. Analysis of variance for various quantitative characters revealed that the mean sum of squares due to genotypes showed high significant difference for all characters under study at 1% level and 5% level of significance. Scattered diagram revealed that 20 genotypes were grouped in to 5 complexes and maximum number of genotypes 11 was found in complex-1. High index score observed was 33 for a genotype SHIVA-555.
Keywords: Genetic variability, GCV, PCV, metroglyph, index score, rice (Oryza sativa L.)