CHARACTERISATION OF MORPHO-PHYSIOLOGICAL TRAITS FOR HIGHER PRODUCTIVITY IN RABI SORGHUM
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Date
2001-08-08
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE
Abstract
A Field experiment was conducted during rabi, 1 999-2000 at Main Research
Station, University of Agricultural Sciences, Dharwad to assess promising rabi sorghum
germplasm materials for useful morpho-physiological and biophysical traits and also
to find out the potential donars with drought tolerant traits.
The genotypes differed significantly with respect to various morphological
characters. Genotypes, M-35-1 took the maximum number of days from 50 per cent
flowering to maturity and recorded higher grain yield. Among the genotypes, maximum
LAi was recorded in 18-9244 at both 50 per cent flowering and dough stage. However,
the genotypes, CR-6 and RSP-3 recorded maximum SLW at 50 per cent flowering and
dough stage, respectively.
The genotypes, 18-9244, NR-35, RS-29 and DSH-4 recorded the maximum leaf,
stem, panicle and total dry matter content and these genotypes also yielded higher.
Among the genotypes, RS-29 and M-35-1 recorded not only higher chlorophyll-a
and total chlorophyll content in leaf at both 50 per cent flowering and dough stage
but also recorded higher grain yield. Maintenance of high relative water content (RWC)
in genotypes RS-652, NR-35 and NR-39 also indicates the drought tolerant character.
The genotype DSH-4 recorded maximum number of veins which also had maximum
grain yield.
Significant differences among the genotypes with respect to yield and yield
components were observed. The genotypes, M-35-1, CR-9, NR-35, PBS-2 and RS-29
recorded the maximum grain yield with few drought tolerant characters. However,
RSP-3 and M-35-1 recorded the maximum harvest index.
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