Indian Society of Genetics & Plant Breeding

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TRIPLE TESTCROSS ANALYSIS FOR YIELD AND YIELD COMPONENTS IN RICE (ORYZA SATIVA L.)

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Triple testcross analysis involving three testers (Pt, pz and Ft) and seven lines was
performed to detect epistasis for plant height, days to first flowering, tillers/plant,
grains/panicle, grain weight/panicle, l000-grain weight, and grain yield/plant. Epistasis
was found to contribute significantly for all the seven traits. The additive and dominance
components were estimated by excluding the lines showing significant estimates for
epistasis. Additive effects were the main source of variation for plant height, days to
flowering, l000-grain weight, and grain yield/plant, while dominance effects were
important for l000-grain weight, grain weight/panicle, and grain yield/plant.
 

Keywords: Epistasis, rice, additive, dominance.

Info

Year: 1993
Volume: 53
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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