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B. MEENA KUMARI*, S. MANONMANI AND K. GANESAMURTHY
Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore – 3.
Twenty eight suspected TGMS lines in rice developed from various sources were evaluated for genetic variability and heritability parameters along with correlation coefficients based on morphological traits and pollen fertility studies. Highest PCV and GCV were observed for pollen fertility, spikelet fertility and number of productive tillers suggesting that these characters are under the influence of genetic control. High heritability was recorded for stigma length and panicle length. High heritability coupled with high genetic advance as per cent of mean was observed for panicle length. Pollen fertility was positively and significantly associated with panicle exertion, spikelet fertility, number of seeds per panicle and single plant yield at genotypic level. Emphasis may be given on characters like stigma length, panicle length and single plant yield for improvement of these lines, since majority of other traits are environment dependant.
Correlation, Genetic advance, Heritability, Rice, TGMS lines, Variability