Mild storage invigoration with nanoparticles in chilli (Capsicum annuum L.)
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Date
2023-11-17
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Department of seed science and technology, College of Agriculture,Vellanikkara
Abstract
The entitled "Mid storage seed invigoration with nanoparticles in chilli
(Capsicum annuum L.)" was carried out in the Department of Seed Science and
Technology, College of Agriculture, Kerala Agricultural University, Vellanikkara,
Thrissur during the year 2022-2023. The study aimed to assess the effect of
nanoparticles on crop performance, seed yield, quality and longevity when
administered as midterm storage treatment.
The initial quality assessment of the six-month-old seeds was carried out at
the beginning of the experiment. Seeds exhibited an initial germination of 67.37%,
with seedling shoot and root length with value of 4.68 cm and 6.81 cm, respectively
and seedling dry weight of 24.1mg. The vigour index-I and II were calculated as 774
and 1595 respectively. The electrical conductivity of the seed leachate and initial
moisture content were 192.33 μS cm-1 and 7.53 % respectively, and the seed
microflora was observed to be 47.15per cent (blotter method) and 53.30 % (agar plate
method). The seeds were imposed with different treatments of nano zinc oxide (300,
400, 500, 600, and 700mg of nano ZnO) and 500 mg nanosized custard leaf powder
per kilogram of seed. The six treatments along with untreated control formed the basis
of the study. The quality parameters of treated seeds were studied and significant
variation was noticed among treatments. Seeds treated with 700 mg of nano zinc oxide
per kilogram of seed recorded significantly higher seed germination (73.31%) and
enhanced seedling vigor indices (945, 1771). Mid storage treatment could enhance the
germination and vigour of seeds.
The treatments along with control (seven treatments) were raised in a
randomized block design with three replications. Observations on growth and yield
parameters were recorded at appropriate growth stages in the tagged plants. While all
nanoparticles treated seeds performed better than control (untreated seeds) treatments.
Seed treatment with nano ZnO @ 700 mg kg-1 of seed (T6) performed superior
for plant height (80.40 cm), days to 50% flowering, (82.67 days), fruit length (5.55 cm), 100
seed weight (g). Treatment with nano ZnO @ 600 mg kg-1 of seed (T5) was effective in
improving branches per plant (5.80), fruits per plant (112.57), fruit weight at maturity (2.31g),
fruit yield per plant (478.73g), seeds per fruit (61.50), seed yield per plant (25.76g) and 100 seed
weight (0.433g). Significant effects were recorded when seeds were treated with nano
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175990