STUDIES ON SEEDLING EMERGENCE, CROP PERFORMANCE AND VIGOUR ASSESSMENT IN BITTER GOURD (Momordica charantia L.)'
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Date
2019
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DIVISION OF SEED SCIENCE AND TECHNOLOGY ICAR–INDIAN AGRICULTURAL RESEARCH INSTITUTE NEW DELHI
Abstract
Experiments under present study entitled “Studies on seedling emergence, crop performance
and vigour assessment in bitter gourd (Momordica charantia l.)” were undertaken during 2017-
2018 at the Regional Station, Karnal, Division of Seed Science and Technology, ICAR-Indian
Agricultural Research Institute, IARI, New Delhi. Halo- priming(KNO3 1%for 48 h), solid
matrix priming (moist vermiculite for 48 h), osmo priming (PEG-6000 for 96 h), bio priming
(Trichodermaviride,10g/Kg) and hydropriming treatments were optimized for improved
germination in bittergourd seed. Best priming treatment in each category was analysed on three
cultivar of bitter gourd viz. Pusa Aushadhi, Pusa Do Mausami and Pusa Rasdar. Halo priming
using KNO3 1% for 48 h seed soaking improved seed germination and vigour significantly as
compared to hydro priming and control.Halopriming improved seed germination by 26.2%,
32.0% and 28.7% at 25°C, 20°C and 15°C, respectively over control.Standard germination
(r=0.941**) and Accelerated ageing test (r=0.917**) showed positive correlation withfield
emergence in 10 bitter gourd seed lots. Coefficient of determination values for standard
germination (R2=0.88***) and accelerated ageing test (R2=0.84***) explain 88% and 84%
variation in field emergence of bitter gourd seed lots.
Planting method and spacing had no significant effect on seed emergence, days to first male
flower opening and days to first female flower opening. Number of fruit, fruit weight, fruit
length and number of seeds/fruit in trellis method as compare to bed furrow method. Trellis
method at spacing (2m x 0.45m) gave highest seed yield per hectare (173.3Kg/ha) as compare
to bed furrow at2m x 0.30m spacing (99.1 Kg/ha). Seed harvested from trellis method have
higher germination percentage (83.2%), seedling vigour index-I(3061.2) and II (25.66) as
compare to bed furrow method.
The results suggest that seed germination; vigour and field emergence in bitter gourd can
be improved by priming seed with KNO3 1% for 48 h. Standard germination and accelerated
ageing test can successfully predict seedling emergence potential of biitter gourd seed lots..
Seed yield and quality of bitter gourd can be improved by trellis method at spacing of 2m x
0.45m.
Key words : Priming, KNO3 , bitter gourd ,Germination,seed yield
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t-10040
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