Assessment of Genetic Variability and Correlation Studies in Turnip (Brassica rapa L.)
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Date
2021-10-09
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College of Horticulture and Forestry, Neri, Hamirpur
Abstract
The present study entitled “Assessment of Genetic Variability and Correlation Studies in Turnip
(Brassica rapa L.)” was conducted during rabi season of 2020 at the Experimental Research Farm,
Department of Vegetable Science, College of Horticulture and Forestry, Neri, Hamirpur (HP). Twelve
genotypes of turnip including check “Purple Top White Globe” were evaluated in Randomized Complete
Block Design to check the extent of genetic variability, heritability, genetic advance, character association
and path coefficient analysis for various horticultural traits including yield. Analysis of Variance
indicated significant difference among all the genotypes of turnip for the traits studied. Best genotype in
terms of average root yield with leaves was Pusa Sweti (200.66g) along with T-COHF-NERI-5 (185.77g)
which was statistically at par with the best genotype. The traits viz. leaf area, root shoot ratio, plant spread
and ascorbic acid content expressed high GCV and PCV values. High heritability was exhibited by the
trait duration of availability of marketable roots followed by days to first harvest and ascorbic acid
content. However high genetic advance as percentage of mean was observed for the traits root shoot ratio
followed by the traits plant spread, ascorbic acid content, duration of availability of marketable roots and
average root yield with leaves. The trait average root yield with leaves had positive and significant
character association with the trait viz. average root yield without leaves both at genotypic and phenotypic
level. Path analysis studies showed that positive direct effect on average root yield with leaves was
observed by the characters leaf length, leaf width, average root yield without leaves, days to first harvest,
days to 50% germination, TSS and number of leaves per plant.