Indian Society of Genetics & Plant Breeding

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GENETIC ANALYSIS OF PHOTOSYNTHETIC RATE IN RICE (ORYZA SATIVA L.)

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Crosses were made in a 7 x 7 diallel set, includingredprocals, involving diversified parents
to study the inheritance of photosynthetic rate. The 42 crosses along with parents were
evaluated for the trait. Combining ability analysis revealed the involvement of both
additive and nonadditive gene effects with predominance of the former. The parent
varieties Gowrisanna, Rasi and Halubbalu had significant and positive gca effects,
indicating the possibility ofusing them as donors for high photosynthetic rate. The crosses
Sona x Gowrisanna, Sona x Halubbalu, and Mahsuri x Rasi were found to be good specific
combinations which involved at least one high general combiner.
  

Keywords: Rice, photosynthetic rate, combining ability, diallel.

Info

Year: 1991
Volume: 51
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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