Directorate of Rice Research (DRR), through All India Coordinated ...

DRR Annual Progress Report 2010, Vol.1 – Varietal Improvement
Performance of entries under drought stress
Drought at different crop growth stages was experienced at Hazaribagh, Rewa, Raipur,
Ambikapur, Paramakudi and Mugad. At Ambikapur severe drought at tillering and grain filling
stages resulted in drastic yield reduction so much so that some of the entries could not even yield.
The experimental mean yield of the entries ranged from 451 kg/ha (Ambikapur) to 2676 kg/ha
(Mugad). The difference between yield of the entries at Mugad was non-significant. The C.V. of
the experiment ranged from 14.2% at Paramakudi to 51.5% at Rewa (Table 1.17). The overall mean
yield of the entries ranged from 1262 kg/ha (IET 21076) to 2340 kg/ha (IET 21638). State and
region yield data are given in Tables 1.18 and 1.19. Data on days to 50% flowering, panicle/m 2 and
plant height are presented in Tables 1.20, 1.21 and 1.22 respectively. While the 50% flowering
duration of the entries ranged from 76 days (IET 21638) to 95 days (IET 21633). The performance
of the entries for drought tolerance screened under rainout shelter at Hazaribagh are given below.
Among the entries IET 21627 and Annada recorded as tolerant entries with score of 3 in 0-9
scale under rain out shelter, while IET 21089 and Narendra 97 rated as moderately tolerant with
score of 5.
The entry IET 21638 (TJP 48) derived from the cross Terna/TJP 28 ranked 1 st with yield of
2340 kg/ha, 76 days of 50% flowering duration and long slender grains. On overall mean it yielded
54.15%, 41.56% and 38.05% higher than the national, regional and local checks, respectively. It
showed significantly higher yield than all the checks at Hazaribagh (2988 kg/ha, 1 st ) and Rewa
(3446 kg/ha, 1 st ). In region 3, it ranked 1 st with 94.74% higher than the highest yielding check.
While in the states of Jharkhand (1 st ), MP (1 st ) and Chhattisgarh (2 nd ), it yielded 91.66%, 46.20%
and 26.1% higher than the best check. Qualitywise, it has high head rice recovery (69.5%),
intermediate ASV (4.0) and AC (24.21%) (Table 1.23).
Overall performance of promising entries in Advance Variety Trial-1-Early (Direct Seeded), (AVT-
1E-DS) kharif 2010, Under drought stress conditions
Rank
1. 21638
TJP 48
Terna/TJP 28
2. 21625
CR 2698
IET No/ Designation / Cross
combination
IR 84895-B-CRA-121-5-1-3-1
GY /
FD /
GT
2340
76
LS
1822
85
LB
Annada (NC) 1518
78
Regional check (RC) 1653
82
(LC )
Local check
1695
79
Yield adv
(%) over
NC/
RC/
LC
54.15
41.56
38.05
20.02
10.22
7.49
Significantly superior to check, %Yield superiority over best
location, yield (kg/ha) / rank variety and hybrid check
Three
checks
NC, RC
& HC
RC
State
Rank
Rewgion
%
BVC
Rank %
BVC
HZB
-- JH-1 91.66 R3-1 94.74
2988(1)
MP-1 46.20
REW
3446(1)
CH-2 26.06
PRK CH-2 26.06 R5-4 3.64
2166(3) TN-3 2.84
KA-2 4.30
Bold italic : Best check & over the best check; NC – National check; HC – Hybrid check; RC – Regional check; LC – Local check;
IET 21625 (CR 2698), ranked 2 nd with 1822 kg/ha mean yield, 85 days of 50% flowering
duration and long bold grains. It yielded 20.0%, 10.2% and 7.5% higher than the national, regional
and local checks, respectively on over all mean. At Paramakudi (2166 kg/ha 3 rd ) it showed
significantly higher yield than regional check only. In the states of Chhattisgarh it showed yield
superiority over the best check by 26.1%. In quality it has high HRR (69.5%), intermediate ASV
1.17