Genetic variability and interrelationship among horticultural traits in faba bean (Vicia faba L.)
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Date
2017-06-30
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palampur
Abstract
The present investigation entitled, “Genetic variability and interrelationship among
horticultural traits in faba bean (Vicia faba L.)” was undertaken at the Research Farm of the
„Department of Vegetable Science and Floriculture‟, College of Agriculture, CSK HPKV, Palampur
during winter season 2015-16. The experimental material comprising of thirty five genotypes of faba
bean including one check namely, „Vikrant-B‟ were evaluated in randomized block design over three
replications to assess the nature of genetic variability, association among various traits, and their direct
and indirect effects on pod yield per plant for effective selection. Data were recorded on nineteen
characters viz., days to 50 per cent flowering, node at which first flower appears, branches per plant,
pods per node, nodes per plant, plant height (cm), days to maturity, pod length (cm), pods per plant,
pod yield per plant (g), seeds per pod, seed yield per plant (g), seed size (cm), 100-seed weight (g),
harvest index ( per cent), total soluble solids (oBrix), dry matter ( per cent), ascorbic acid (mg/100g)
and protein content ( per cent). In addition, morphological characterization for seed colour was also
recorded visually. The observations were recorded on ten competitive plants which were randomly
selected in each entry over the replications. On the basis of mean performance, „Local-1-C‟ was the top
ranking genotype for pod yield per plant which significantly outperformed all the genotypes with an
increase in yield of 44.58 per cent over check „Vikrant-B‟. In addition, fifteen genotypes produced pod
yield similar to that of „Vikrant-B‟. HB-123-B (54.00g), HB-123-C (51.00g), HB-511-C (48.00g),
PRT-7-B (46.87g), HB-40-A (46.67g) and HB-193-A (45.33g) were the top performing genotypes
among them. The superior performance of these genotypes for fresh pod yield per plant was mainly
attributed to their superior/comparable performance for pods per node, nodes per plant, pod length,
pods per plant, branches per plant, seed yield per plant, 100-seed weight to that of best performing
check „Vikrant-B‟. High heritability along with high genetic advance was observed for node at which
first flower appears, pods per plant, harvest index, protein content and pod yield per plant indicating the
inheritance of these characters under the control of additive gene action and selection would be more
effective for their improvement. Based on correlation and path coefficient analysis, nodes per plant,
pods per plant, branches per plant, seed yield per plant, seed size, 100-seed weight, harvest index and
protein content could be considered as the best selection parameters for evolving high yielding
genotypes.