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International Journal of Horticulture 2014, Vol.4, No.11, 53
-
57
http://ijh.biopublisher.ca
54
Table 1 Mean performance of parents and F
1
’s for physiological components of rust resistance
Genotypes
Stomata count (no.)
Stomata size (
m)
Stomata pore size (
m)
Upper
Lower
Length
Width
length
Width
Arka Anoop
11.56
38.56
0.021
0.008
0.013
0.001
IIHRPB-1
15.33
62.67
0.031
0.022
0.060
0.018
IIHRPB-2
15.22
63.33
0.035
0.021
0.050
0.016
IIHRPB-7
17.11
59.33
0.033
0.018
0.049
0.011
IC-525236
11.50
41.00
0.022
0.009
0.016
0.002
IIHRPB-1×Arka Anoop
12.33
36.44
0.024
0.009
0.012
0.003
IIHRPB-2×Arka Anoop
11.56
39.67
0.021
0.009
0.017
0.003
IIHRPB-7×Arka Anoop
11.33
36.56
0.023
0.009
0.014
0.004
IIHRPB-1×IC-525236
11.78
37.11
0.023
0.009
0.016
0.004
IIHRPB-2×IC-525236
12.33
38.77
0.025
0.009
0.015
0.004
IIHRPB-7×IC-525236
11.89
41.40
0.022
0.013
0.016
0.005
Grand mean
12.90
45.00
0.026
0.012
0.025
0.006
F-test
*
*
*
*
*
*
SEm±
0.70
2.07
0.001
0.001
0.002
0.0004
CD at 5%
1.95
5.73
0.004
0.003
0.005
0.001
CV (%)
7.71
6.49
7.200
12.350
10.430
8.340
Note: *Significant at 5% level
Figure 1 Mean performance of parents and F
1
’s for stomatal
size (
m)
Anoop (0.021) followed by IIHRPB-7×IC-525236
(0.022) (Table 1; Figure 1).
Stomatal Width (
m)
Among the parents, stomatal width was maximum in
IIHRPB
-
1 (0.022) followed by IIHRPB
-
2 (0.021),
however, the minimum stomatal width was found in
Arka Anoop (0.080) followed by IC
-
525236 (0.090).
Whereas, in F
1
combination maximum stomatal width
was in IIHRPB
-
7×IC
-
525236 (0.013) and minimum
was noticed in remaining five combinations (0.009)
(Table 1; Figure 1).
Stomatal Pore Length (
m)
The stomatal pore length was maximum in IIHRPB-1
(0.060) followed by IIHRPB
-
2 (0.050), however, the
minimum stomatal pore length was found in Arka
Anoop (0.013) followed by IC
-
525236 (0.016) among
the parents. Whereas, in F
1
combination maximum
stomatal pore length was found in IIHRPB
-
2×Arka
Anoop (0.017) followed by IIHRPB
-
1×IIHR31 (0.016)
and IIHRPB
-
7×IC
-
525236 (0.016) minimum noticed
in IIHRPB
-
1×Arka Anoop (0.012) followed by
IIHRPB
-
7×Arka Anoop (0.014) (Table1).
Stomatal Pore Width (
m)
The stomatal pore width found to be maximum in
IIHRPB
-
1 (0.018) followed by IIHRPB
-
2 (0.016).
Among the parents, however, the minimum stomatal
pore width was found in Arka Anoop (0.001) followed
by IC
-
525236 (0.002). Whereas in F
1
combination
maximum stomatal pore width was found in
IIHRPB-7×IC-525236 (0.005) followed by IIHRPB-1×
IIHR31 (0.004), IIHRPB-2×IC-525236 (0.004) and
IIHRPB-7×Arka Anoop (0.004) and minimum noticed
in IIHRPB-1×Arka Anoop (0.003) and IIHRPB-2×
Arka Anoop (0.003) (Table1).
Association of physiological components with PDI
Highly significant and positive correlations were
observed between physiological components with PDI.
Correlation coefficients ranged between 0.918 to
0.997 for stomatal characters and disease severity.
Similar correlation coefficients were recorded for rate
of infection and AUDPC with stomatal components (r=
0.800 to 0.978 for rate of infection and r=0.932-0.997
for AUDPC) (Table 2~Table 4; Figure 2).