STUDY ON GENETIC VARIABILITY AND HERITABILITY IN Ocimum spp.

Authors: 
M. Shehbaz Khan, D.K. Bahuguna, Rajeev Kumar¹, Nitin Kumar¹ and Ishrat Ahmad Lone Department of Seed Science and Technology, Ch.Charan Singh University, Meerut. 1 Department of Ag. Botany, CSSS (P.G.) College Machhra, Meerut.

AB
STRACT:
A field ex
per
i
ment was con
ducted dur
ing
kharif
sea
son of 2008 to study the
vari
abil
ity of 25 ge
no
types of
Ocimum spp.
for 11 traits. The es ti
mate of max
i
mum range and
co
ef
fi cient of vari
abil
ity were noted for six dif
fer
ent char ac
ters in clud
ing plant height, leaf length,
no. of in
flo
res
cence/plant, length of in
flo
res
cence, days to ma
tu rity and fresh herb yield /plant.
The high est es
ti
mates of heritability in broad sense were ob served for plant height (99.70 %)
fol
lowed by length of in
flo
res
cence /plant (98.80 %), fresh herb yield per plant (98.60%), no. of
in
flo res
cence/plant (98.40%), days to ma
tu rity (92.60%) and leaf width (91.50%). The high
est
value of ge netic ad vance was ob
tained for fresh herb
age yield per plant (1018.02) fol
lowed by
dry herb yield per plant (394.31), no of in
flo
res
cence/plant (43.76) and plant height (39.13).
High
est val ues of genotypic and phenotypic covariance in di
cated wide range of vari abil
ity and
high heritability as
so
ci
ated with higher val ues of rel a
tive ge
netic ad
vance. 

Journal: 
HortFlora Research Spectrum,
Year: 
2012
Volume: 
, 1(2)
Page: 
168-171