EFFECT OF SEED PRIMING WITH MICRONUTRIENTS ON SEED YIELD AND QUALITY OF BLACKGRAM GENOTYPES
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Date
2021-09-07
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Abstract
The present investigation was carried out in the Department of Seed Science
and Technology, Advanced Post Graduate Centre, Lam, Guntur (laboratory studies)
and Agricultural Research Station (ARS), Jangamaheswarapuram, Guntur (field
studies) during 2019-20 to study the effect of seed priming with micronutrients on
seed yield and quality of blackgram genotypes viz., Tulasi, Lam minumu and
Jaladeeswara.
Initially, a preliminary experiment was conducted to standardize best
concentration of micronutrient and duration of priming in blackgram genotype,
Tulasi. Seeds were subjected to nutripriming with various concentrations (0, 0.01,
0.05, 0.1 and 0.5 %) of zinc sulphate, iron sulphate and boric acid for different
durations (0, 2, 4, 6 and 8 h) and seed quality parameters were recorded by standard
germination test using between paper method. Among all the concentrations, 0.05 %
of both zinc sulphate, iron sulphate and 0.1 % boric acid were found effective in
recording highest germination (%), seedling length (cm) and seedling vigour index.
Irrespective of micronutrient and concentration, priming for 6 h showed improvement
in all the seed quality parameters.
Seeds of blackgram genotypes, Tulasi, Lam minumu and Jaladeeswara were
subjected to hydropriming and nutripriming treatments with best concentration of
micronutrients (0.05 % zinc sulphate, 0.05 % iron suphate and 0.1 % boric acid) for
various durations (2, 4, 6 and 8 h) and tested for germination and seedling growth
along with dry seed by between paper method. Results indicated that genotype,
interaction of genotype × treatment, genotype × duration and genotype × treatment ×
duration showed non-significant influence on germination (%). Treatment, duration
and their interaction exhibited significant influence on germination (%) with highest
being recorded after seed priming with 0.05 % zinc sulphate for 6 h. Among all the
genotypes, treatments, durations and their interactions nutripriming with 0.05 % zinc
sulphate for 6 h in Tulasi showed significantly higher seedling length (cm) and
seedling vigour index.
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Seeds of blackgram genotypes viz., Tulasi, Lam minumu and Jaladeeswara
were subjected to nutripriming either individually (0.05 % zinc sulphate, 0.05 % iron
sulphate, 0.1 % boric acid) or in combination (0.05 % zinc sulphate + 0.05 % iron
sulphate, 0.05 % zinc + 0.1 % boric acid, 0.05 % iron sulphate + 0.1 % boric acid and
0.05 % zinc sulphate + 0.05 % iron sulphate + 0.1 % boric acid) for 6 h and shade
dried to reach 9 % moisture content. Primed seeds along with dry seed were evaluated
for seed quality and field parameters. Analysis of variance of results disclosed that
blackgram genotype, Tulasi and nutripriming with combination of 0.05 % zinc
sulphate + 0.05 % iron sulphate + 0.1 % boric acid recorded highest improvement in
all seed quality parameters.
In field studies, nutripriming with combination of 0.05 % zinc sulphate + 0.05
% iron sulphate + 0.1 % boric acid in Tulasi showed best improvement for all field
parameters viz., plant height at 25, 50 DAS and at maturity, number of branches per
plant, number of pods per plant, seed yield per plant and seed yield per plot.
Nutripriming with combination of 0.05 % zinc sulphate + 0.05 % iron sulphate + 0.1
% boric acid followed by 0.05 % zinc sulphate + 0.1 % boric acid in Tulasi showed
advancement in days to 50 % flowering. Treatments that included zinc sulphate also
showed best performance in all the above mentioned parameters that was superior
over unprimed seed. Among all the genotypes, Tulasi showed better performance in
all characters which was statistically superior to Lam minumu and Jaladeeswara.
Correlation studies exhibited highly significant positive association of number of pods
per plant, number of branches per plant, plant height at maturity and negative
association of days to 50 % flowering with seed yield.
Micronutrient analysis of soil after harvest indicated that genotype and
treatment exhibited significant impact on residual zinc, iron and boron contents. The
interaction due to genotype and treatment showed significant effect on residual zinc
and boron contents but non-significant influence on residual iron content of soil after
harvest. Results revealed that better absorption of nutrients was noticed after seed
priming with combination of all the micronutrients viz., 0.05 % zinc sulphate + 0.05
% iron sulphate + 0.1 % boric acid in Tulasi.
Seed quality parameters of harvested crop exhibited non-significant effect
among all the three genotypes in germination and field emergence while significant
influence was observed in case of seedling length, seedling vigour index and total
protein content. Nutripriming treatments exerted significant influence on germination,
seedling length and seedling vigour index while non significant effect on field
emergence and total protein content. Genotype, treatment and their interaction showed
significant influence on seedling length and seedling vigour index, which were
highest upon nutripriming with zinc sulphate + 0.1 % boric acid and 0.05 % iron
sulphate + 0.1 % boric acid in Tulasi, respectively.
The present study disclosed that blackgram genotype, Tulasi, showed better
performance upon nutripriming. Nutripriming with combination of all the three
micronutrients 0.05 % zinc sulphate + 0.05 % iron sulphate + 0.1 % boric acid and
0.05 % zinc sulphate + 0.1 % boric acid proved to be efficient in enhancing seed yield
and quality of blackgram genotypes.
Description
EFFECT OF SEED PRIMING WITH
MICRONUTRIENTS ON SEED YIELD AND
QUALITY OF BLACKGRAM GENOTYPES