1. JAYANTI – A new disease and insect tolerant variety for deepwater rice
S Mohanty, D Nayak, S Barik, L Behera, ON Singh & SK Pradhan
Crop Improvement Division,
Central Rice Research Institute, Cuttack

2. Parentage: Samson Polo/Jalnidhi
Year of AICRIP testing:
Promising for- Odisha & Uttar Pradesh
Recommended by: 46th annual workshop (2011) held at
Directorate of Rice Research,Rajendranagar,
Hyderabad.
Potential Yield: 4700 kg/ha
Average Yield: kg/ha(Orissa, Stress)
3431 kg/ha (Zone III, Stress)
Weighted avg.:3485kg/ha (Zone III, Stress)

3. Reaction to major diseases:
It showed moderately tolerance reaction to leaf blast, neck blast, sheath blight, sheath rot and rice tungro virus.
Reaction to major pests:
The line is resistant to stem borer , leaf folder, rice thrips, whorl maggot and EHB and moderately resistant to gall midge biotype1.
Agronomic features:
Easy threshability, suitable to normal sowing and seed rate, responsive to high fertilizer levels

4. DESCRIPTION OF THE VARIETY
CR (IET 20706)
Plant height
Plant type
No. of tillers/plants
No. of panicles/ m2
Flowering duration
Panicle type
Panicle exertion
Awning
Apiculus colour
1000 -grain weight
Kernel length (mm)
Kernel breadth (mm)
L/B ratio
.Grain type
Kernel appearance
Milling recovery
Alkali spreading value
Amylose content
Gel consistency (mm) cm
Tall
6-8
221
days
Compact panicle
Well exerted
:No awn
:Straw
:22.5 g
:5.62mm
:1.96mm
:2.86mm
:MS
:White
:66.5 %
:5.0
:24.2%
:24.0

5. Figure : Grains and Kernels(IET20706)

7. Production condition- Deepwater situation (STRESS SITUATION)
Table 1 (a): Overall performance (All India) of the entry in coordinated variety trials (years ).
Adaptability zone-III Name of proposed variety/Hybrid: CR (IET 20706)
Production condition- Deepwater situation (STRESS SITUATION)
Name of trial
Year of testing
No. of trials
(Stress)
Proposed variety
IET 20706
National check
(Jalmagna)
Regional
Check
(Dinesh)
Local Check
Qualifying
Variety
IET20697
Mean yield (kg/ha)
IVT- DW
AVT- 1DW
I year
II year 2009
III year 2010 2 3
3000(2)
3069(3)
4225(1)
2745(4)
2709(5)
2380
2016
2770(4)
2820
2684(5)
2530(6)
2852
3250(1)
2162(7) --
Mean 8
3431
2611
2535
2689
2706
Weighted average
3485
2595
2600
2597
% increase or decrease over the check and qualifying variety
I year 2008
II year III year 2010
9.29
48.81
10.79
49.82
11.77
21.30
48.14
-7.69
41.95
% increase or decrease over the checks and qualifying varieties
(pooled over 3 years)
Pooled over 3 years
Wt. Av.
30.90
34.30
35.35
34.04
27.59
29.60
26.79
34.19
Frequency in the top group (Pooled for 3 years)
(Under stress situation)
5/8
4/8
DRR Annual Progress Report 2007 Vol. 1 Page 1.88
DRR Annual Progress Report 2008 Vol. 1 Page 1.9
DRR Annual Progress Report 2009, Vol. 1 Page 1.82

8. DRR Annual Progress Report 2008,Vol. 1 Page 1.88
Table 1 (b): Overall performance (All India) of the entry in coordinated variety trials
(years ) Adaptability zone-III
Name of proposed variety/Hybrid: CR (IET 20214)
Production condition- Deepwater situation (Non-stress situation)
Name of trial
Year of testing
No. of trials
Proposed variety CR
National check
(Jalmagna)
Regional
Check
(Dinesh)
Local Check
Qual.
Variety-1
IET20220
Mean yield (kg/ha)
IVT-DW
AVT-1DW
I year
II year 2008
III year 2009 2 4
3940(2)
4064(1)
3571(2)
3740(5)
3553(5)
2949(5)
4406(1)
3827(3)
3334(3)
1752
2848
3660(1)
2710(9)
3903(2)
3155(4)
Mean
3858
3414
3856
2753
3256
Weighted average
3842
3349
3746
2954
3365
% increase or decrease over the check and qualifying variety
I year 2007
II year 2008
5.35
14.38
21.09
-10.58
6.19
7.11
124.89
42.70
-2.43
45.38
4.13
13.19
% increase or decrease over the checks and qualifying varieties
(pooled over 3 years)
Pooled over 3 years
Wt. Av.
13.01
14.72
0.05
2.56
40.14
30.06
18.49
14.18
Frequency in the top group (Pooled for 3 years)
7/10
6/10
DRR Annual Progress Report 2008,Vol. 1 Page 1.88
DRR Annual Progress Report 20089,Vol. 1 Page 1.9
DRR Annual Progress Report ,Vol. 1 Page 1.82

9. % increase or decrease over the checks & qualifying varieties (Pooled)
Table 1 (c) State-wise pooled data of IET 20706for % increase over checks & qualifying
varieties during 2008 to under STRESS
States
Year
IET20706
Proposed var.
Jalmagna NC
Dinesh RC
Local Check
Qual
Variety
IET-20697
ODISHA
2008
4439
3323
3373
3546
4191
2009
4152(4)
3338(7)
3409(6)
3507(5)
4264(3)
2010
4660(2)
3508
3344
3563 NT
Mean
4663
3390
3375
3539
4228
% increase or decrease over the checks & qualifying varieties (Pooled)
37.6
38.2
31.8
10.3

10. Table 2: Adaptability to changes in agronomic conditions, Kharif 2010.
CENTRES
Nitrogen Levels
IET 20706
Jal magna NC
Dinesh RC
Local Check
CHINSURAH
(i) Yield (t/ha) under different nitrogen levels
(ii) Percentage gain or loss under the doses in check
& qualifying variety.
(iii) N res. (kg grain/kg N) (Base level 20 kg N/ha)
N1=20 kg N; N2=40 kg N &N3=60 kg N N1
1.92
2.93
2.76
3.18 N2
2.48
3.68
3.70
4.02 N3
2.99
3.59
4.66
N1 % --
-34.47
-30.43
N2 %
29.16
-32.60
-32.97
-38.30
N3 %
55.72
-16.71
-25.62
-35.83
18.52
24.93
31.34
27.78
17.81
11.04
21.01
24.57
CUTTACK
(i)Yield (t/ha) under different nitrogen levels
(ii)Percentage gain or loss under the doses in check & qualifying variety.
(iii)N res. (kg grain/kg N) (Base level 30 kg N/ha)N1=20 kg N; N2-40 kg N & N3-60 kg N
3.19
3.47
3.78
3.65
3.53
3.94
3.72
4.07
-8.06
-15.60
14.42
3.39
-7.36
1.91
1.08
-8.59
22.92
2.78
8.33
13.19
5.21
7.29
Progress report 2010.Volume 3: Agronomy, Soil Science and physiology. DRR Hyderabad, Page:

11. Table 2: Adaptability……Contd.
CENTRES
Nitrogen Levels
IET 20706
Jal magna NC
Dinesh RC
Local Check
GHAGHRAGHAT
(i)Yield (t/ha) under different nitrogen levels
(ii)Percentage gain or loss under the doses incheck & qualifying variety.
(iii)N res. (kg grain/kg N) (Base level 30 kg N/ha)N1=20 kg N; N2-40 kg N & N3-60 kg N N1
1.50
1.47
1.63
1.51 N2
1.71
1.75
1.92
1.82 N3
1.85
1.96
2.13
2.00
N1 % --
2.04
-7.97
-0.66
N2 %
14.00
-2.28
-10.93
-6.04
N3 %
8.18
-5.61
-13.14
-7.50
7.00
9.33
9.67
10.33
5.83
8.17
8.33
Progress report 2010.Volume 3: Agronomy, Soil Science and physiology. DRR Hyderabad, Page:

12. Table 3: Severity index to major diseases (NSN-1&2) Kharif, 2008 to 2010 (over all locations)
YEAR
IET20706
Jalmagna NC
Dinesh RC
pathology Check
TN-1
Qual
Variety
IET-20697
Leaf Blast
2008 1ST year
4.4
4.8
6.2
5.2
4.9
2009 2nd year
3.3
6.1
5.9
5.5
2010 3rd year
3.7
5.0
5.1
5.4 NT
Mean
3.8
5.3
5.7
Neck Blast
3.4
2.3
3.5
7.0
1.0
1.7
1.8
3.6
1.4
3.9
2.8
2.5
2.7
2.4
Brown Spot
4.2
5.8
4.5
4.6
4.7
Sheath Blight
7.4
4.1
6.0
6.5
Bacterial Blight
6.3
6.8
7.3
7.6
7.2
5.6
Sheath rot
4.3
4.0
2.6
2.2
2.0
2.9
3.1
Rice tungro virus
3.0

13. Stem borer DH Natural 2008 1.0 2.8 1.7 2009 1.9 2.4 2.1 2.2 2010 --
Table 4: Reaction to major insects pests (NSN-1& 2) Kharif 2008 to 2010
Insects
Pests
Year
IET 20706
Jalmagna
Dinesh RC
Ento.Check
TN-1
Qual. Variety
IET GR
Score FR
Stem borer DH
Natural
2008
1.0
2.8
1.7
2009
1.9
2.4
2.1
2.2
2010 --
Mean
1.5
2.6
1.6
2.0
1.4 WE
1.8
5.0
0.3
2.3
1.1
3.7
3.4
2.9
1.3
3.0

14. Table 4: Contd….. Gall Midge Insects Pests Year IET 20706 Jalmagna
Dinesh RC
Local Check
TN-1
Qual. Variety
IET 20697 GR
Score FR
Gall Midge
Biotype 1
2008
5.0 --
7.0
8.0
2009
3.0
1.5
4.0
2010
Mean
4.3
6.0
Biotype 3
Natural
9.0
Biotype4 M
Biotype5
2.0
5.5
7.5
Biotype6
0.0

15. Table 4: Contd…. Leaf folder Natural 2008 2.3 3.0 5.0 2009 1.0 2.0 1.5
Insects
Pests
Year
IET 20706
jalmagna
Dinesh RC
Local Check
TN-1
Qual. Variety
IET GR
Score FR
Leaf folder Natural
2008
2.3
3.0
5.0
2009
1.0
2.0
1.5
2010 --
Mean
1.8
3.3
4.0
Whorl maggot
Natural
2.1
1.3
1.2 RT
2.5
EHB
Screening nurseries 2008, Disease and insect pest, AICRIP, DRR, PP: &
Screening nurseries 2009, Disease and insect pest, AICRIP, DRR, PP: 59-66
Screening nurseries 2010, Disease and insect pest, AICRIP, DRR, PP:74-91

16. Length and Breadth Ratio
Table 5: Data on quality characteristics of the proposed variety
Quality characteristics
Year
IET20706
Jalmagna(NC)
Dinesh(RC)
Local Check
Qual .Variety,IET-20697
Milling (%)
2009
65.4 68 63 NT
69.5
2010
67.5
64.0
59.5
66.5
Mean
66.45 66
61.25
69.5S
Head Rice Recovery (%)
60.5
53.6
41.8
65.2
63.5
16.5
15.0
61.0 62
35.1
28.4
Kernel Length(mm)
5.47
5.22
4.68
5.76
5.39
5.21
6.24
5.62
5.31
Kernel Breadth(mm)
1.93
2.57
2.56
1.99
2.68
2.59
2.36
1.96
2.63
2.58
Length and Breadth Ratio
2.83
2.03
2.04
1.82
2.89
2.01
2.64
2.86
2.02
Grain type MS SB LB
Grain Chalkiness. A OC
VOC
Alkali
Spreading Value
6.0
5.0
0.5
4.0
3.0
1.75
Amylose Content (%)
24.71
25.58
25.8
24.75
24.15
24.9
25.35
24.3
24.43
25.24
25.60
Gel Consistency (mm) 24 38 41 49

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