TY  - BOOK
AU  - Laju Paul K 
AU  - Ibrahim K K (Guide)
TI  - Variability in Morphological, Physiological and Biochemical Characters in Kalmegh (Andrographis paniculata Nees.)
U1  - 630.28 
PY  - 2000///
CY  - Vellanikkara
PB  - Department of Plant Breeding and Genetics, College of Horticulture
N2  - An experiment ID kalmegh (Andrographis panicu/ata Nees.) was 
conducted in the Department of Plant Breeding and Genetics, College of 
Horticulture, Vellanikkara during 1998-2000, with the objectives of understanding 
the morphological variability, growth pattern, optimum stage of harvest and the 
variation in different biochemical compounds among the accessions. The 
accessions were collected from Kerala and neighbouring states. 
Ten accessions were compared based on 50 morphological, 16 
physiological and 3 biochemical characters. In general, accessions showed uniform 
root, inflorescence, flower and fruit characters. However a limited variation for 
habit, stem and leaf characters existed among most of the accessions. 
In general, accessions showed variability for characters namely total 
plant dry weight, stem dry weight, leaf dry weight and root dry weight when 
observed at 1, 2, 3 and 4 months after transplanting. Ranking of the accessions was 
not consistent on the various dates of harvest. Optimum stage of harvest is 
recommended as 3 months after transplanting. At this stage maximum herbage 
yield was recorded by accession Ac-4. Physiological parameters namely Leaf area 
and LAI showed steady increase up to three months after transplanting and 
thereafter it declined. LAR, RGR, CGR and NAR recorded higher values at earlier 
dates. 
Heritability (broad sense) of characters showed inconsistency at various 
dates of harvest. However leaf dry weight showed higher heritability on all dates. 
At 3 months after transplanting i.e. the optimum stage of harvest, heritability was 
high for all the characters relating to herbage yield and most of the physiological 
parameters. 
 
Biochemical studies revealed that the total phenol content and 
andrographolide content varied considerably among the accessions. Phenol content 
in the plant increased with an increase in dry weight while Andrographolide 
content increased with a proportionate increase in moisture content. 


UR  - http://krishikosh.egranth.ac.in/handle/1/5810104112
ER  -