Experiment code CSSRS-K-2023-12
Experiment Title Induction of salt tolerance in rice by mutagenesis
Research Type State Trial
Experiment Background The global extent of salt-affected lands is considerable. Moreover, the expanded salinity area is expected to be more because of climate change and water shortage. The predominant constraint in rice production is soil salinity in the coastal belts of South Gujarat. To overcome the salinity problem, different strategies such as reclamation, drainage and water control, are under investigation. Breeding for salt tolerance of rice varieties seems to be one of the most promising solutions for utilizing such soils. Exploitation of salt tolerant rice varieties had been in progress, but those rice varieties were generally low yielding. Salt affected lands provide avenues for testing rice genotypes for tolerance to salinity. As a consequence, sustained and profitable production of crops on salt-affected soil is only possible by evolving the salt tolerant varieties, which possess high yield, early maturity and other desirable characteristics through the use of induced mutation. Induced mutations have been utilized for the creation of genetic variability for the selection of mutant varieties with improved agronomic traits.
Experiment Group Crop Improvement
Unit Type (01)RESEARCH UNIT
Unit (38)SOIL AND WATER MANAGEMENT RESEARCH UNIT (NAVSARI)
Department (221)Coastal Soil Salinity Research Station Danti- Umbharat
BudgetHead (311/05003/0D)311/12/REG/00660
Objective

1. To evaluate promising mutant lines under saline condition
2. To find out selection criteria under saline condition

Season Kharif
Location Unit Type (01)RESEARCH UNIT
Location Unit (38)SOIL AND WATER MANAGEMENT RESEARCH UNIT (NAVSARI)
Location Department (221)Coastal Soil Salinity Research Station Danti- Umbharat
Plot No U-15 (Location: Umbharat)
PI Name (NAU-EMP-2015-000439)HAIMILKUMAR KAMLESHKUMAR JOSHI
PI Email haimiljoshi@nau.in
PI Mobile 9998213154
Year of Approval 2016
Commencement Year 2016
Completion Year 2025
Design of Experiment

Evaluated M8 generation in 2023 (Non replicated)

After confirming stability the performance of the selected promising mutants will be evaluated in RBD (Randomized Block Design) for yield and yield components along with their parents and check varieties under saline conditions.

Crop Spacing (cm x cm)

20 x 15

Gross Plot (m x m) NA for generation advancement and screening
Net Plot (m x m) NA for generation advancement and screening
Total Experiment Area (m2) NA for generation advancement and screening
Plot History Last Three Year

2020

2021

2022

 Kharif- Rice, Rabi: Fallow

 Kharif- Rice, Rabi: Fallow

 Kharif- Rice, Rabi: Fallow

Initial Soil Sample Analysis Report

Plot No.

Depth

U-15

pH2.5

0-15

8.07

15-30

8.09

EC2.5(dS/m)

0-15

1.011

15-30

1.237

Initial Soil Sample Analysis Report Attachment Attachment Not Available!
Layout Plan

Total 42 mutants of Dandi and 57 mutants of GNR-3 were evaluated in M8 generation (32, 35, 38, 39, 40, 47)

N

 

D

D

D

99

98

97

91

92

93

94

95

96

90

89

88

87

86

85

79

80

81

82

83

84

78

77

76

75

74

73

67

68

69

70

71

72

66

65

64

63

62

61

55

56

57

58

59

60

54

53

52

51

50

49

42

43

44

45

46

48

41

37

36

34

33

31

25

26

27

28

29

30

24

23

22

21

20

19

13

14

15

16

17

18

12

11

10

9

8

7

1

2

3

4

5

6

Layout Plan Attachment Attachment Not Available!
Treatment

Seeds of varieties Dandi and GNR-3 were irradiated with five doses of gamma rays viz., 100, 200, 300, 400, 500 Gy in Gamma Cell (Cobalt-60 source emitting 3600 rads per minute) at Bhabha Atomic Research Centre (BARC), Trombay, Mumbai. (Five hundred seeds per dose).
Generation advancement was carried out from M1 (2016) to currently M8 (2023) to select the best mutant lines for salt tolerance based on individual plants.
The performance of the selected promising mutants after confirming stability will be evaluated for yield and yield components along with their parents and
check varieties under saline conditions.

Treatment Attachment Attachment Not Available!
(NAU-EMP-2015-000439) HAIMILKUMAR KAMLESHKUMAR JOSHI haimiljoshi@nau.in 9998213154 29-02-2024
Active
(NAU-EMP-2006-000458) PATHIKKUMAR BALDEVBHAI PATEL pbp_swm@nau.in 9725023750 08/07/2023
Active
Rice Differents Entries