EVALUATION OF ADVANCED POTATO (Solanum tuberosum L.) HYBRIDS FOR GROWTH AND YIELD IN SOUTHERN TRANSITIONAL ZONE OF KARNATAKA
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Date
40828
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University of Agricultural Sciences GKVK, Bangalore
Abstract
Potato (Solanum tuberosum L.) is one of the world’s most important food
crop. A study was conducted at Agricultural Research Station, Madenur,
Hassan, during kharif-2010. Two experiments consisting of evaluation of early
and medium maturing advanced potato hybrids were carried out.
Among early maturing advanced potato hybrids, high GCV and PCV were
observed for plant height, number of stems, number of tubers per plant,
marketable and total tuber yield. High heritability coupled with high GAM were
observed for plant height, number of tubers per plant, marketable and total
tuber yield, tuber diameter, non-reducing sugars, potato leaf roll virus and
Spodoptera. Path co-efficient analysis revealed that plant height, number of
leaves, number of tubers per plant, tuber weight per plant and marketable
tuber yield at both genotypic and phenotypic level had a positive direct
influence on the yield. Genotypes J/97-168 and Kufri Pukhraj performed well
under southern transitional zone of Karnataka.
Among medium maturing advanced potato hybrids, high GCV and PCV
were observed for plant height, number of stems, number of tubers per plant,
marketable and total yield and total sugars. High heritability coupled with high
to moderate GAM were observed for all the characters except chlorophyll
content. Path co-efficient analysis revealed that number of stems, number of
leaves, number of tubers per plant, tuber weight per plant and marketable
tuber yield at both genotypic and phenotypic level had a positive direct
influence on the yield. Genotypes 200/P-26, MS/99-1871 and Kufri Pukhraj
performed well under southern transitional zone of Karnataka.