STUDIES ON SEASONAL INFLUENCES ON GROWTH AND ROOT YIELD OF MEDICINAL COLEUS (Coleus forskohlii Briq.)
Loading...
Files
Date
2006
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD
Abstract
A study to investigate the influence of different dates of planting on growth
and root yield of medicinal coleus is an essential pre-requisite in the packages of
practices of any crop in a particular region. This information helps the farmers to get
higher root yields. The tuberous roots of Coleus forskohlii contain an active
biocompound called Forskolin which is having a wide range of bioactivity related to
antihypotensive, positive intropic and adenyl cyclase activating property.
In the present study, a field trial consisting six treatments (monthly
plantings) was laid out in Randomized Block Design (RBD) with four replications at
Herbal Garden, Acharya N.G. Ranga Agricultural University, Rajendranagar,
Hyderabad. The data were recorded for eight morphological and four biochemical
observations.
Morphological observations were taken for growth analysis. Biochemical
observations were taken to support the growth and yield pattern of the crop in
different seasons. Analysis of variance revealed significant differences between
treatments (monthly plantings). Better growth and root yields were obtained in early
plantings (August and July plantings) whereas, delayed plantings (November and
December plantings) showed lower yields.
The yield potential of the crop was studied through analysis of biochemical
parameters like nitrate reductase (NR) activity and soluble protein estimation
suggesting that delayed plantings (November and December plantings) were
subjected to unfavourable environmental conditions which in turn affected plant
metabolism.
Correlation analysis revealed that total biomass production which is the
result of better plant metabolism is positively correlated with root yield.
Description
Keywords
STUDIES, SEASONAL, INFLUENCES, GROWTH, ROOT, YIELD, MEDICINAL, COLEUS