Identification of Cytoplasmic Influence on Grain Quality and Micro-nutrient Traits Using Reciprocal Crosses and Mitochondrial Marker Based Polymorphismin Rice (Oryza saliva L.)

摘要

The data on plant, grain quality and nutrient traits were recorded to study genetic variability, heritability, genetic advance, correlation and path coefficient in both direct and reciprocal F2 crosses of rice involving BPT-5204 and HPR-14 parents. The objective was to observe the effect of cytoplasmic influence on these traits. On the basis of mean performance, protein, iron, carbohydrates, phytic acid contents and grain yield per plant was higher in direct cross compared to its reciprocal cross. The percentage of transgressive segregants obtained in reciprocal cross for iron, zinc, amylose contents and grain yield per plant was higher than the direct cross. Both the crosses showed high heritability with low PCV, GCV and genetic advance for iron, zinc, carbohydrate and phytic acid contents. For grain yield per plant, moderate heritability with high PCV, GCV was observed.Zinc content in grain exhibited maximum positive direct effect on grain yield compared to iron content. Phytic acid had negativecorrelation with protein, zinc and amylose content in both crosses. In the parental polymorphism effort using 20 mitochondrial markers, 13 markers indicated similarity for both parents and mostly showed monomorphism.