Central Rice Research Institute Annual report...2011-12

Breeding for Resistance/Tolerance to Biotic, Abiotic and Environmental Stresses
Table 24. Performance of Vandana NILs (qDTY 12.1
) with and without drought stress at CRRI Regional Station,
Hazaribag 2011 wet season
Days to flower Grain yield (t ha -1 ) Harvest index
Designation Stress Control Stress Control Stress Control
Way Rarem 90 86 0.10 0.86 0.21 0.11
IR84984-83-15-110-B 62 60 1.46 2.09 0.26 0.34
IR84984-83-15-481-B 61 61 1.68 2.34 0.21 0.32
IR84984-83-15-862-B 62 61 1.58 2.14 0.23 0.31
IR90019:17-159-B 60 59 1.48 2.26 0.23 0.38
IR90019:17-15-B 59 59 1.49 1.87 0.24 0.33
IR90020:22-265-B 62 61 1.27 2.16 0.22 0.33
IR90020:22-283-B 60 59 1.58 2.41 0.24 0.39
Vandana 60 61 1.32 1.79 0.22 0.31
Mean 64 63 1.33 1.99 0.23 0.31
CD 0.05 2.3 2.3 0.49 0.92 0.1 0.1
CV (%) 2.21 2.27 22.73 28.07 13.34 21.82
design with five checks (Savitri, Sabita, Swarna,
Swarna-Sub1 and Sarala) under transplanted conditions
in semi-deep water situation. Among the different
entries, NDR 9460 performed best with an average
yield of 7.88 t ha -1 follow by CR2415-3-2-1-1-1-1 (7.14 t
ha -1 ) and CR2416-27-2-1-2-2-1 (5.81 t ha -1 ) against the
best check Savitri (4.38 t ha -1 ).
Evaluation of OYT entries for submergence tolerance
Eighty entries from observational yield trial (OYT)
were screened for submergence tolerance under controlled
conditions during wet season, 2011. Among the
80 entries, fifteen viz., OR2340-19, OR2331-11, OR2407-
KK-5, NDR9467, NDR9460, NDR9479, LPR1103,
LPR1110, RAUSB 98301351, RAU640-204-15,
RAU1407-7-1-3-3, RAU1415-12-7-6-4-8-1, RAU1415-
12-7-6-4-3-2, CR2754-18-6 and Swarna-Sub1 showed
more than 90% survival after 12 days of submergence.
Elongation ability of these lines was comparable to
FR13A.
Development of breeding material
During 2011 wet season, 1073 single plant progenies
(F 3
-F 7
) developed under EIRLSBN have been
grown. A selection activity has been organized at CRRI,
Cuttack during November 18-19, 2011, where ten breeders
from different cooperating centers and also from
IRRI, Philippines have participated. Breeders selected
single plants from the segregating material according
to their location specific requirement. About 1350 single
plant selections were made by different breeders. The
selected lines will be supplied to all the corresponding
centers for location specific evaluation.
Evaluation of promising genotypes in on-farm PVS trials
The researcher managed PVS (mother) trials were
conducted at two sites viz., village Nuagaon of Puri
district, and Kalakha of Cuttack district during 2011
wet season. A set of twelve genotypes selected for evaluation
including one local check (Bhandi/Kalashree).
The trials at both the locations were direct seeded during
third and fourth week of June. The trial at Nuagaon,
Puri district was completely submerged for 10 days
during September 20-29. Among the 12 entries tested at
Nuagaon, LPR09003 gave the highest grain yield (2.41
t ha -1 ) followed by CR2008-111-4 (2.23 t ha -1 ) and
CR2336-1 (2.16 t ha -1 ) against the local check Kalahree
(2.15 t ha -1 ). However, the trial at Kalakha, Cuttack was
normal but it was affected by terminal drought. Among
the 12 entries tested LPR 09003 gave the highest grain
yield (6.43 t ha -1 ) followed by Savitri-Sub1 (5.78 t ha -1 )
and CR2336-1 (5.68 t ha -1 ) against the high yielding
check Savitri (4.57 t ha -1 ) and local check Bhandi (4.59 t
ha -1 ).
Saline prone areas
Evaluation of promising salt-tolerant rice varieties/elite lines
through participatory varietal selection (PVS)
During the dry season, a set of 10 promising salttolerant
rice varieties/elite lines (three from CRRI, two
from Vietnam and five from IRRI, Philippines) along
with two tolerant checks (FL 478 and IR72046-B-R-3-3-
3-1) and a farmer’s variety (Patitapaban/Khandagiri)
were evaluated in on-farm trials at Ersama, Astaranga
and Mahakalpada blocks. The crop in Astarang and
Mahakalpada was completely damaged under high
CRRI ANNUAL REPORT 2011-12
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