STUDIES ON GENETIC VARIABILITY, MORPHOLOGY, YIELD AND QUALITY TRAITS IN BATHUA (Chenopodium album L.)
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Date
2018-07-28
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K.R.C. COLLEGE OF HORTICULTURE COLLEGE OF ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)
Abstract
The investigation on “Studies on genetic variability, morphology, yield and
quality traits in bathua” was conducted in the field of Vegetable Science of Kittur
Rani Channamma College of Horticulture, Arabhavi. Fifteen genotypes collected
from NBPGR, New Delhi and nine genotypes from different parts of Karnataka were
evaluated in randomized block design with three replications during kharif 2017.
The analysis of variance revealed highly significant (both at P=0.01 and
P=0.05) difference among the genotypes for all the characters studied indicating the
higher magnitude of variability in the germplasm.
The very high estimates of heritability coupled with high values of genetic
advance over per cent mean (GAM) were observed for traits such as leaf area,
inflorescence length, inflorescence fresh weight, fresh weight of plant, dry weight of
plant, foliage yield per plant, vitamin-A, protein, calcium, magnesium, iron, zinc
indicates predominance of additive components for these traits and hence direct
selection would be more effective in improving these traits.
The results on correlation and path analysis revealed high positive and
significant association of foliage yield per plant with characters Viz., plant height,
number of leaves per plant, number of branches per plant, leaf area, stem girth, fresh
weight of plant, dry weight of plant, foliage yield per plot and foliage yield per
hectare and these characters also had high direct and indirect effect on foliage yield
per plant. Hence direct selection for these traits would be more useful in the
improvement of yield per plant.
Based on Mahalonobi’s D2 analysis, 24 genotypes were grouped into 4
clusters. The cluster II showed maximum intra-cluster distance (D2 = 294.46),
whereas, the maximum inter cluster distance was observed between cluster II and IV
(D2 =1585.98). Among the 28 characters studied, magnesium content (37.32%)
contributing maximum to genetic diversity. Top five genotypes viz., HUB-7, HUB-8,
HUB-6, IC-540842, and IC-540831 were recorded high foliage yield per plant and
quality parameters. Therefore, these genotypes can be further assessed for their
stability.
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