GENETIC EVALUATION AND CHARACTER ASSOCIATION STUDIES IN PEA (Pisum sativumL.)
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Date
2014
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UHF,NAUNI
Abstract
ABSTRACT
The present investigation entitled “Genetic evaluation and character association studies in pea (Pisum
sativum L.)” was carried out at the research farm, department of Vegetable Science, Dr YS Parmar University of
Horticulture and Forestry, Nauni, Solan (HP) during Rabi, 2014-15 to evaluate germplasm of pea. The
experiment was laid out in a RCBD with three replications. Forty three genotypes including two check cultivars
were evaluated for different horticultural traits. The observations were recorded on days to fifty per cent
flowering (number), node at which first flower appear (number), number of pods per plant, pod length (cm),
pod width (cm), number of seeds or grains per pod, shelling percentage (per cent), weight of 100 pods (g), days
to marketable maturity (number), harvest duration (days), pod yield (kg/plot), pod yield (q/ha), TSS (per cent),
total phenols (per cent) and powdery mildew severity (per cent). Analysis of variance showed significant
differences among all the genotypes for all the characters under study. Five genotypes viz. 14/PEVAR-6,
14/PMVAR-3, 14/PEVAR-2, 14/PMVAR-1 and EC-598628 were found superior over other entries and over
standard checks for yield, quality and other important horticultural traits. High heritability estimates coupled
with high to moderate genetic gain were observed for total phenols (per cent), days to fifty per cent flowering,
days to marketable maturity, weight of 100 pods (g)which indicated that these characters are under additive
gene control and are more reliable for effective selection. Yield had shown positive association with node at
which first flower appear (number), number of pods per plant, pod length (cm), number of seeds or grains per
pod, shelling percentage (per cent), weight of 100 pods (g) and total soluble solids (per cent). Amongall the
traits studied pod length (cm) had shown maximum positive direct effect on pod yield per plot followed by
number of pods per plant, number of seeds per pod, harvest duration, weight of 100 hundred pods (g), TSS (per
cent), pod width (cm). Further divergence studies indicated that hybridization between genotypes from cluster I
and IV can be useful for getting the superior recombinants or transgressive segregants in subsequent
generations.
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