volume 37 issure 1 (march 2003) : 68 - 71
GENETIC VARIABILITY, CORRELATION AND PATH COEFFICIENT STUDIES IN TOMATO
1Orissa University of Agriculture and Technology,
Regional Research Station, Bhawanipatna - 766 001, Orissa, India
ABSTRACT
Evaluation of 18 genotypes of tomato over 2 years elucidated high heritability with high GCV and genetic gain for average fruit weight, plant height, number of fruits and branches/plant which could be improved by simple selection. The phenotypic and gentoypic associations of yield were significantly positive with number of fruits/plants and days to first harvest but significantly negative with plant height, number of branches/plant and average fruit weight. Number of fruits/plant was inversely related with average fruit weight. Determinate types were high yielders. Most early varieties were small fruited and low yielders. Path analysis confirmed that number of fruits/plant and average fruit weight registered positive direct effect on yield and negative indirect effect through each other on yield. Number of fruits/plant should be considered independently or in combination with average fruit weight and days to first harvest while imposing selection for amelioration of yield in tomato.
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Indian Journal of Agricultural Research
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