Correlation coefficient studies in Knol-Khol (Brassica oleracea var. gongylodes) cv. White Vienna under Srinagar Garhwal Valley

Abstract

An experiment was carried out at Horticultural Research Centre, H.N.B. Garhwal University, Chauras Campus (Uttarakhand), India during winter season, 2016-2017 with knol-khol cv. White Vienna to study the correlation coefficient between various traits. Association of yield with other characters revealed that, the knob yield per plot was highly positively significant correlation with fresh weight of knob, whole plant weight, fresh weight of leaves, plant height at harvest, knob length, Knob diameter, dry weight of leaves and days taken to complete harvest at both genotypic and phenotypic levels, where as significantly negative correlation at genotypic and phenotypic levels was observed in days taken to knob initiation. However, the association among yield components had found that the plant height at harvest showed significantly positive correlation with knob diameter, knob length, fresh weight of knob, fresh weight of leaves, whole plant weight, dry weight of leaves and dry weight of knob. The days taken to knob initiation showed highly significant positive correlation at genotypic and phenotypic levels with days taken to first harvest only, whereas knob diameter, knob length and dry weight of leaves showed negatively significant correlation with days taken to knob imitation at genotypic and phenotypic levels. The days taken to complete harvest showed positive correlation at genotypic and phenotypic levels with Knob diameter, knob length, fresh weight of knob, fresh weight of leaves and dry weight of knob. The Fresh weight of knob showed positive significant correlation at phenotypic and genotypic levels with fresh weight of leaves, whole plant weight and dry weight of leaves.