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

Improvement of Grain and
Nutritional Quality
Breeding for Quality Rice
Table 12. AYT- Promising aromatic selections
Varieties
Panicle
Plant ht length EBT m -2 Yield
(cm) (cm) (nos) t ha -1
CR2934-35 107.8 29.1 186 5.05
CR2938-1 118.0 30.0 308 5.60
CR2937-10 119.7 28.8 237 5.35
CR2947-15 109.3 24.7 222 5.11
CR2937-37 117.7 26.6 250 5.32
Badshabhog 171.6 30.0 210 2.97
Kalanamak 180.8 28.4 180 2.57
Expt. Mean 116.45 28.05 215 4.08
LSD (P=0.05) 0.31
CV (%) 3.8
Evaluation and improvement of yield of
aromatic varieties using conventional and
molecular approaches
Evaluation of 135 purified aromatic landraces collected
from Odisha indicated wide variation for different
traits viz., plant height (97 -189 cm), panicle length
(20.3-33.5 cm), DFF (90-115 days) and grain yield (3.01
– 4.73 t ha -1 ). Similarly, rich genetic diversity was detected
at both morphological and molecular level in the
124 Kalanamak collections from different districts of
UP.
Forty four promising aromatic, semi dwarf, high
yielding breeding lines having medium slender grain
developed from the crosses Swarna/Geetanjali
(CR2937), CR689-116-2/Kalanamak (CR2938), Tillak
Chandan/Kalanamak (CR2936), IR36/Basmati-370
(CR-2939),CRM 2203-4/Dubraj (CR2947) and BPT-
5204/Kalanamak (CR2941) were evaluated under Advance
Yield Trial with Kalanamak and Badshabhog as
checks and five cultures gave more than 5.00 t ha -1
(Table 12). Three promising aromatic genotypes
CR2947-1, CR2738-2, CR2713-35, CR2934-39 and
CR2934-35 having desirable quality traits were nominated
for evaluation under IVT-ASG as new short grain
entries for all India testing.
Advancement of breeding materials
Development and selection of breeding materials
resulted in selection of 796 single plant progenies from
45 crosses for further evaluation, while seeds from 253
F 2
plants belonging to 20 crosses were collected and 12
new crosses attempted during wet season. Mapping
population for aroma and Fe were advanced from F 4
to
F 5
generation and parental polymorphism for aroma
with 240 SSR (RM) markers was completed. Four cultures
viz., CR2713-11(IET 21840), CR2713-179, (IET
22648), CR2947-18 (IET 22650) and CR2713-180 (IET
22649) were found promising and promoted to next
year of testing under AICRIP.
Aromatic AICRIP Trials
Aromatic short grain trials ASGON, IVT- ASG and
AVT-1-ASG were conducted in which genotypes IET
22651(5.3 t ha -1 ), IET21850 (7.1 t ha -1 ) and IET 21053
(5.8 t ha -1 ) stood first. Three Basmati trials IVT-BT, AVT-
1-BT and AVT-2-BT were also conducted at CRRI.
Development of high yielding varieties for
grain quality, organic and nutritional
enrichment
Hybridization
Selections of 243 single plants having slender grain
were made from segregating populations (F 3
-F 7
) while
F 2
single plants seed collected from 12 crosses and 10
new cross combinations were attempted during wet
season. Fixed lines of Padmakeshari mutants with slender
grain were grown for seed increase and further testing.
Evaluation of promising slender grain selections
Under Advance yield trial 33 promising slender grain
selections belonging to two crosses (BPT 5204, Swarna
with Banskathi) were evaluated along with Swarna,
Gayatri and Pooja as checks and five cultures were
found to have grain yield capacity more than 5.40 t ha -
1
(Table 13).
36 CRRI ANNUAL REPORT 2011-12