STUDIES ON SEED TECHNOLOGICAL ASPECTS OF KALMEGH (Andrographis paniculata Nees.), GARDEN RUE (Ruta graveolens L.) AND ROSELLE (Hibiscus sabdariffa Var. sabdariffa L.)
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Date
2015-07-10
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
A laboratory experiment was conducted during 2014-15 with a view to study the
effect of media, temperatures, seed treatment and accelerated aging on the seed quality
parameters of Kalmegh (Andrographis paniculata Nees.), Garden rue (Ruta graveolens
L.) and Roselle (Hibiscus sabdariffa Var. sabdariffa L.) seeds. The experimental results
revealed that the top of paper method (TP) at 20 and 25 0C recorded highest percentage of
germination (60 and 40 %), seedling vigour index-I (1240 and 657) and seedling vigour
index-II (730 and 598) in Kalmegh and Garden rue seeds respectively. Whereas, the
between paper method (BP) at 30 0C recorded the highest seed germination (78 %),
seedling vigour index-I (2499) and seedling vigour index-II (2036) in Roselle seeds.
Among the different seed treatments the hot water treatment (50 0C for 5 min.) recorded
the higher seed germination (66 and 82 %), seedling vigour index-I (1110 and 2055) and
seedling vigour index-II (565 and 1783) in Kalmegh and Roselle seeds respectively.
Whereas, KNO3 treatment recorded the higher seed germination (61.3 %), seedling
vigour index-I (950) and seedling vigour index-II (598) in Garden rue seeds. While,
studying the effect of accelerated ageing test on seed quality of these medicinal plants,
have recorded the decreased seed viability and seedling vigour (speed of germination,
germination percentage, seedling vigour index I&II) and increased biochemical
parameter (electrical conductivity) progressively with the increment in ageing period (7,
8, 9 and 10 DAA).
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