Genetic Studies for Yield and Physiological Traits in Three Line Aerobic Rice Hybrids  

Sathya Ramalingam , S. Jebaraj
Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Madurai, 625104, India
Author    Correspondence author
Plant Gene and Trait, 2013, Vol. 4, No. 9   doi: 10.5376/pgt.2013.04.0009
Received: 30 May, 2013    Accepted: 01 Jul., 2013    Published: 25 Jul., 2013
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Preferred citation for this article:

Sathya and Jebaraj., 2013, Genetic Studies for Yield and Physiological Traits in Three Line Aerobic Rice Hybrids, Plant Gene and Trait, Vol.4, No.9 48-52 (doi: 10.5376/pgt.2013.04.0009)


Sufficient genetic variability was recorded among the 90 hybrids and 21 parents of rice genotypes under aerobic condition. Genotypic and phenotypic correlations were ascertained for grain yield and its components. The results revealed that the traits productive tillers per plant, panicle length, spikelet fertility, harvest index, proline content, SPAD chlorophyll meter reading, chlorophyll stability index, relative water content and dry root weight as they expressed significant and positive correlation with single plant yield and also positive inter correlations among themselves. Therefore, selection for any one of the above characters would bring in simultaneous improvement of other characters and ultimately improving the grain yield.

Aerobic rice; Genotypic correlation; Phenotypic correlation; Drought
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