Rice Genomics and Genetics 2015, Vol.6, No.6, 1-5
1
Table 3 QTL associated with agronomic and aerobic root traits in HKR47 x MAS26 F
2
population
Trait
QTL name Chr.
No.
Position
(cM)
Flanking
markers
Flanking
markers
LOD
Additive
effect
R
2
%
DPE
position (cM)
Tiller number
qTN
8.1
8
36.0
RM8020
36.0
2.6
0.9928
16.14
H
Tiller number
qTN
8.2
8
55.2
RM25-RM544
52.2-57.0
3.2
1.0331
21.03
H
Tiller number
qTN
8.3
8
60.9
RM72
60.9
3.0
0.8223
17.28
H
1000 grain
weight
qTGW
8.1
8
59.1
RM547-RM72
58.1-60.9
4.2
0.9232
27.37
H
Yield/plant
qYPP
8.1
8
60.1
RM547-RM72
58.1-60.9
5.1
1.2004
20.23
H
Root length
qRL
8.1
8
43.7
RM8243
43.7
2.6
3.9063
13.72
M
Note: DPE is direction of phenotypic effect; H and M indicate HKR47 and MAS26 alleles, respectively; Chr. No. indicates
chromosome number; LOD: log10 of an odd ratio, Additive effect is the effect of substituting a MAS26 allele for an HKR47 allele;
R
2
: Percent phenotypic variance
Figure 4 QTL likelihood curves of LOD score of all the detected QTLs on chromosome 8 in HKR47
×
MAS26 F
2
population
Figure 5 Chromosomal locations of quantitative trait loci
(QTL) identified via microsatellite marker analysis in
HKR47 × MAS26 F
2
population
Although yield potential of aerobic rice genotypes
are lower than the low-land
indica
rice varieties
being cultivated under conventional flooded
conditions but the cultivation of aerobic rice is quite
promising where water is too scarce to grow lowland
rice. In aerobic rice, the combined amount of rainfall
and irrigation water from sowing to harvest varied
from 470 to 650 mm, compared with 1200-1300 mm
in lowland rice (Martin et al., 2007). In the present
study, we reported that aerobic rice variety (MAS26)
and several segregating HKR47 × MAS26 F
2
plants
performed well in terms of grain yield per plant as
compared to HKR47 under aerobic cultivated
conditions. Yield per plant of HKR47 × MAS26 F
2
