GENETIC EVALUATION OF CMS LINES AND THEIR MAINTAINERS FOR YIELD AND HORTICULTURAL TRAITS IN CABBAGE (Brassica oleracea var. capitata L.)
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Date
2019-06
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CSKHPKV, Palampur
Abstract
The present investigation entitled “Genetic evaluation of CMS lines and their
maintainers for yield and horticultural traits in cabbage (Brassica oleracea var. capitata L.)”
was carried out at „Vegetable Research Farm‟ of the Department of Vegetable Science and
Floriculture, CSKHPKV Palampur with the objectives to identify the promising CMS lines
and their maintainers and to find out genetic variability, interrelationship and direct and
indirect contribution of component traits on marketable yield. Twenty three genotypes (15
CMS lines+ six maintainer lines + two checks namely KGMR-1 and Varun) were evaluated
in Randomized Complete Block Design with three replications during Rabi, 2017-18.
Analysis of variance for all the traits viz., plant spread (cm), number of non-wrapper leaves,
polar diameter (cm), equatorial diameter (cm), days to harvest, compactness of head (g/cm3),
TSS (0Brix), ascorbic acid content (mg/100g), gross head weight (g), net head weight (g),
marketable heads per plot and marketable head yield per plot (kg) exhibited the presence of
sufficient variability in the germplasm as revealed by significant differences for all the
characters. Based upon overall performance, genotypes namely II-MCMS (257.63q/ha),
GA(P)-105CMS (244.29q/ha), KGAT-II (238.10q/ha), II-SCMS (236.86q/ha) and III-
105CMS (233.90q/ha) were found to be the most promising for marketable head yield (q/ha)
and various other horticultural traits. High PCV estimates were recorded for marketable head
yield per plot and net head weight. High heritability coupled with moderate genetic advance
was observed for gross head weight, net head weight, number of non-wrapper leaves, head
shape index and TSS. Estimates of correlation coefficient revealed significant positive
association of marketable head yield per plot with net head weight, equatorial diameter, gross
head weight, polar diameter, plant spread and ascorbic acid content. High positive direct
effect on marketable head yield per plot was observed by equatorial diameter, head shape
index, compactness of head, gross head weight, marketable heads per plot, polar diameter,
days to harvest and TSS.
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