Morphological and biochemical characterization of teak clones of karnataka for resistance traits to teak defoliator, hyblaea puera (hyblaeidae: lepidoptera)
Loading...
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UASD
Abstract
“Great Indian Teak” is an important timber species preferred all over the world because of its
versatile range of uses and priced for its valuable timber. Its distinctive qualities make it an ideal raw
material for multifarious products as well as an important agro-forestry species. About 187 insect
species have been found feeding on the living teak tree in India. Among these, the teak defoliator,
Hyblaea puera Cramer is the most widespread and considered as serious national pest.
Of the nine leaf traits considered, leaf pubescence and leaf texture was found to be
associated with the levels of resistance. Fifty clones of teak from nine provenances of Karnataka have
been evaluated for their resistance/susceptible in vivo in search of resistance against H. puera.
Clones ID STG-3 and STG-12 (State Graft) were found to be the most resistant and susceptible
clone, respectively.
The resistance clones viz., STG-3 showed a significant higher concentration of phenol and
most susceptible clone, STG-12 of state grafts contain very low amount of phenol (0.02%). The higher
concentration of nitrogen was recorded in the most susceptible clone STG-12. Potassium content was
directly proportional to their degree of resistant. The leaves of selected teak clones showed gradual
increase in moisture contents in relation to leaf area consumption.
Description
Keywords
null