Evaluation of Potato Genotypes for Yield Characters in Late Autumn Season

Abstract

Evaluation of ten potato genotypes for yield characters in late autumn season was undertaken under different environments viz., E1-haulm cutting 80 days after planting, E2-haulm cutting 100 days after planting and E3-haulm cutting 120 days after planting to assess their suitability for processing purpose. The characters recorded were days to emergence, number of shoots/plant, foliage weight/plant (g), number of tubers/plant, tuber weight (g), tuber length (cm), tuber yield/plant (g), total tuber yield (q/ha). The environmental components were highly significant for all the traits except days to emergence, number of shoots/plant and tuber weight. Genotypes x environment interaction was significant for number of shoots/plant, foliage weight/plant, tuber weight, tuber yield/plant, total tuber yield, Among the three environments, 120 days crop duration (E3) yielded the highest total tuber yield (q/ha) followed by environment E2 (100 days crop duration) and E1 (80 days crop duration). For total and processing grade yield, cvs Kufri Chipsona-1, Kufri Chipsona-2 and Kufri Ashoka were found with the highest yield in the environment E1. However, in environment E2, for total tuber yield, cvs Kufri Badshah, Kufri Bahar, Kufri Chipsona-1, Kufri Chipsona-2 and Kufri Ashoka performed significantly better than mean and cvs Kufri Badshah, Kufri Bahar, Kufri Lauvkar, Kufri Chipsona-1 and Kufri Chipsona-2 had yielded better than mean value for processing grade yield.