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Indian Journal of Agricultural Research
Year : 2001, Volume : 35, Issue : 2
First page : ( 79) Last page : ( 84)
Print ISSN : 0367-8245.

Variability, correlation and path analysis in rice varieties under different spacings

Satyavathi C. Tara, Bharadwaj Ch., Subramanyam D.

Department of Genetics and Plant Breeding, Agricultural College, Bapatla - 522 101, India.

* Present address: NRC for Soybean, Khandwa Road, Indore - 452 017, India.

Abstract

Variability studies in 15 rice varieties revealed that there were considerable differences in the influence of different spacing on the expression of yield and grain quality characters except L/B ratio and panicle length. Correlation studies showed that selection can be practiced for number of productive tillers per plant, number of grains per panicle, L/B ratio and 100 rice grain weight as these characters manifested positive and significant correlation with grain yield in all the three spacings. A significant relationship between amylose content and gel consistency was also observed. Path coefficient analysis revealed that the characters number of productive tillers per plant, number of grains per panicle, L/B ratio and 100 rice grain weight were found to be the main contributors to grain yield in all the three different spacings.

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