PHYSIOLOGICAL BASIS OF YIELD VARIATION IN FRENCH BEAN (Phaseolus vulgaris L.) GENOTYPES
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Date
2004
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE
Abstract
"A field experiment was conducted during rabi 2003 under irrigated
conditions at Main Agricultural Research Station, University of
Agricultural Sciences, Dharwad to study the ""Physiological basis of yield
variation in French bean [Phaseolus vulgaris L.) genotypes"". The
experiment consisted of twenty two genotypes. Nineteen newly bred
genotypes and three released popular varieties were used for evaluation.
The experiment was laid out in a randomized block design with four
replication on medium black soil. Significant differences were observed for
various morpho-physiological, growth, biochemical parameters, yield and
yield components between the genotypes.
The genotype 'Arka Komal' possessed significantly higher number of
leaves and branches per plant as compared to other genotypes, besides
having higher value for leaf area, leaf area index, absolute growth rate and
crop growth rate. The genotype was superior as well as efficient with
respect to production and partitioning of total dry matter, particularly in
reproductive parts.
Significantly higher total chlorophyll was observed in 'Arka Komal'.
The genotype 'IIHR-909' showed higher protein content followed by
'DWD-FB-r and 'DWD-FB-57'.
The genotype differed significantly with respect to SLA and SLW at
all stages except at harvest. The genotype 'DWD-FB-26' showed higher
SLW followed by 'Arka Komal', however the genotype 'Arka Komal' showed
higher SLA followed by 'DWD-FB-9'.
Significant differences were observed with respect to yield and yield
components within the genotypes. The important and components i.e.,
number of seeds per pod, seed weight per plant and seed yield per ha was
highest in 'Arka Komal' followed by 'DWD-FB-69' and 'DWD-FB-27'."
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