Vol. 16 No. 3
Study of trait alliance between tuber yield, its attributes and storage life in potato (Solanum tuberosum L.)
Author(s): D. R. PRAJAPATI, R. N. PATEL AND R. A. GAMI
Abstract: The aim of the investigation was to study association and trait alliance in potato by using 33 diverse genotypes belonging to various eco-geographical zone of the country. The result of correlation co-efficient anticipated the range of genotypic relationship was higher than the corresponding phenotypic association for total traits studied. Tuber yield plant-1 was highly significant and positively allied with plant height, number of stem hill-1, number of tuber plant-1, average tuber weight and harvest index at both genotypic and phenotypic levels, while negatively associated with tuber dry matter, loss due to rottage on weight basis and total weight loss at genotypic level and phenotypic level. Total weight loss had positive correlation with storage traits viz., loss due to rottage on weight basis, loss due to rottage on number basis and physiological weight loss suggesting that genotypes exerted lower loss due to rottage on weight basis and loss due to rottage on number basis as well as physiological weight loss were most suitable for storage of potato for long time. The path co-efficient scrutiny bared that high direct effects were wielded by number of tubers plant-1, average tuber weight, tuber dry matter physiological weight loss, loss due to rottage on weight basis and loss due to rottage on number basis demonstrating their comparative involvement to the tuber yield plant-1.
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