Record Details

MORPHOLOGICAL AND PHYSIOLOGICAL CHARACTERISATION OF BITTER GOURD (Momordica charantia L.) FOR RESISTANCE TO SOIL SALINITY

KrishiKosh

View Archive Info
 
 
Field Value
 
Title MORPHOLOGICAL AND PHYSIOLOGICAL CHARACTERISATION OF BITTER GOURD (Momordica charantia L.) FOR RESISTANCE TO SOIL SALINITY
 
Creator Rajesh Kushawaha
 
Contributor T. K. Behera
 
Subject bacteria, planting, azotobacter, biological development, productivity, wheats, yields, inorganic acid salts, nitrogen, grain
 
Description t-8161
The present investigation entitled “Morphological and Physiological characterisation
of bitter gourd (Momordica charantia l.) for resistance to soil salinity ” was carried
out in the year 2006-07.The objectives of this research was to screen, characterise
and compare bitter gourd genotypes sensitive and tolerant to soil salinity on
morphological and physiological parameters and also analyse correlation and path
coefficient with respect to yield and yield contributing characters. To create artificial
salinity condition for different salinity levels 0, 1, 2, 4, 6 dSm-1
, sodium chloride,
sodium carbonate and potassium sulphate were used under pot culture experiment.
None off the genotypes were survived under 6dSm-1
salt concentration based on
preliminary observations hence this treatment is excluded. During course of
investigation observations were recorded for germination percentage, affected leaves
percentage, percent defoliation, survival percentage, vine length, Na+
-K
+
ratio,
proline content, reducing sugar, total phenol, membrane stability index and yield per
plant at different salinity levels for study salinity stress. Salinity had inhibitory effect
on all morphological and some physiological parameters. Reduced germination
percentage, affected leaves percentage, survival percentage, vine length, percent
defoliation was observed. The parameters such as Na-K ratio, proline content, total
phenol content increases with increase in salinity level. The membrane stability
index, reducing sugar, yield per plat decreases with increase in salinity level. On all
parameters the genotype WBBG15 and WBBG18 were found to be tolerant with
respect to soil salinity. Yield per plant showed highly significant and positive
phenotypic correlation with germination percent, total phenol, reducing sugar,
proline content and membrane stability index but negatively correlated with affected
leave percent under all salinity levels. Phenotypic path analysis revealed maximum
direct effect on yield per plant was due to germination percent followed by total
phenol and vine length under all salinity levels .The genotypes were grouped into six
clusters in all the four environments i.e. control, 1dSm-1
, 2 dSm-1
,and 4 dSm-1
based
on D2
statistics. On the basis of D2
estimates, maximum divergence was observed
between cluster I and V under control and between cluster IV and V under 1dSm-1
.
In 2dSm-1 the maximum divergence was reported between cluster III and V whereas
under 4dSm-1
, maximum divergence was reported between cluster IV and V
(387.54). The maximum intra cluster D2
estimate was observed in cluster III under
control environment whereas cluster II showed the maximum intra cluster distance in
environment 1dSm-1
. Under 2dSm-1 cluster I exhibited the maximum intra cluster
distance while it was highest for cluster I under 4dSm-1
.The various genotypes were
scattered in different clusters indicating considerable genetic diversity among them.
Thus, genotypes included in most diverse cluster clusters hold great promise as
parental stock to create genetic variability for selection as well as suitable donors for
these traits in hybridization and crop improvement programme.
 
Date 2016-12-23T11:32:19Z
2016-12-23T11:32:19Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/92383
 
Format application/pdf