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Allelopathic effect of aqueous extracts of different parts
of Tinospora cordifolia (Willd.) Miers on some
weed plants
K. M. Abdul Raoof * and M. B. Siddiqui
Department of Botany, Aligarh Muslim University, Aligarh-20
2002, India.
Corresponding
author. E-mail:
abdulraoofkm@gmail.com,
zaman.amu@gmail.com.
Accepted 14 February, 2012 |
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The present
study was conducted to investigate the allelopathic effects
of Tinospora cordifolia weed on seed germination and
seedling growth of weed plants (Chenopodium album L.
Chenopodium murale L., Cassia tora L. and
Cassia sophera L.). Leaf and stem aqueous extracts of
Tinospora at 0.5, 1.0, 2.0 and 4.0% concentrations were
applied to determine their effect on seed germination and
seedling growth of test plants under laboratory conditions.
The aqueous extracts from stem and leaf had inhibitory
effect on seed germination of test plants. Aqueous extracts
from leaf and stem inhibited root length, shoot length and
dry weight. Root length, shoot length of weed species
decreased progressively when plants were exposed to
increasing concentration (0.5, 1, 2 and 4%). Aqueous extract
of leaves shows the maximum inhibition while stem shows the
least affect on weeds. The pH of aqueous extracts of
different parts of T. cordifolia does not show any
major change when the concentration increased.
Key words:
Allelopathy, aqueous extract, Chenopodium album,
Chenopodium murale, Cassia tora, Cassia sophera, Tinospora
cordifolia. |
