Abstract
GNG 1958 is a popular desi chickpea variety released for commercial cultivation in the North west plain zone (NWPZ) of India though the All India Coordinated Research Project (AICRP) on chickpea. Mutation breeding is an important tool not only to enhance genetic variability but also for specific trait improvement in elite varieties. However, the effect of a mutagen, either physical or chemical is dependent not only on the type of mutagen but also on the genotype of the plant material. Therefore, the present study was conducted to determine the effect of radio sensitivity (gamma rays) and chemical mutagenicity (ems) on biological traits of cultivar 1958 and the lethal dose (LD50) and growth reduction (GR50) doses for creation of genetic variability in this variety. Seeds of GNG 1958 were exposed to variable doses of gamma irradiation (0, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, and 700 Gy) and (ems) concentrations (0.0, 0.1,0.2, 0.3, 0.4, 0.5,0.6, 0.7, 0.8, 0.9 and 1.0%). The effect of mutagens on biological parameters like germination (%), shoot length(cm), root length (cm), shoot fresh weight (g), shoot dry weight (g), root fresh weight (g), root dry weight (g), stem diameter (mm), leaf length (cm), and leaf width (cm) were studied under controlled conditions in the M1 generation. The growth pattern correlated inversely with the gamma-irradiation doses or EMS concentrations and appeared to be inhibitory at higher doses. In contrast, low doses of gamma rays and EMS concentrations initially stimulated certain growth and development of traits. Root length showed a positive and significant correlation with all the biological parameters except stem diameter whereas stem diameter showed a negative significant correlation with all the biological parameters except leaf width and shoot fresh weight and positive with root fresh weight in case of gamma irradiated doses. The diameter of the stem showed a negative significant correlation with leaf length, shoot dry weight and root dry weight. LD50 dose is an important to understand the sensitivity of genotype GNG1958 to the critical doses of mutagens creating 50 percent mortality or lethality. It was established that GNG1958 for germination by using probit analyses of germination data the lethal dose (LD50) was determined as 468.60 Gy with gamma rays and 0.56% with ethyl methane sulphonate while seedling growth. In M2 generation of chickpea, 129 chlorophyll mutants were identified viz., Albina-23, Chlorina-58, Xantha-30 and Virids-18 out of which 47 chlorophyll mutants were observed under 350 Gy (LD50) and 82 chlorophyll mutants in 300 Gy (slightly
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Claims 10
Claim · model-written summary
The lethal dose (LD50) for germination of GNG1958 was 468.60 Gy with gamma rays.
- Taxon
- chickpea
Cicer arietinumt0 - Material
- GNG 1958t0
- Treatment
- gamma rayse1
- Outcome
- lethal dose (LD50)e1
- Value
- 468.60 Gye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“the lethal dose (LD50) was determined as 468.60 Gy with gamma rays and 0.56% with ethyl methane sulphonate”
Claim · model-written summary
The lethal dose (LD50) for germination of GNG1958 was 0.56% with ethyl methane sulphonate.
- Taxon
- chickpeaCicer arietinumt0
- Material
- GNG 1958t0
- Treatment
- ethyl methane sulphonatee1
- Outcome
- lethal dose (LD50)e1
- Value
- 0.56%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“the lethal dose (LD50) was determined as 468.60 Gy with gamma rays and 0.56% with ethyl methane sulphonate”
Claim · model-written summary
Growth correlated inversely with gamma-irradiation doses or EMS concentrations and was inhibited at higher doses.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- gamma-irradiation doses or EMS concentrationse1
- Outcome
- growth patterne1
- Direction
- inverselye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“The growth pattern correlated inversely with the gamma-irradiation doses or EMS concentrations and appeared to be inhibitory at higher doses”
Claim · model-written summary
Low doses of gamma rays and EMS initially stimulated growth and development of traits.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- low doses of gamma rays and EMS concentrationse1
- Outcome
- growth and development of traitse1
- Direction
- stimulatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“low doses of gamma rays and EMS concentrations initially stimulated certain growth and development of traits”
Claim · model-written summary
Root length correlated positively and significantly with all biological parameters except stem diameter.
- Taxon
- chickpeaCicer arietinumt0
- Organ / stage
- Roote1
- Outcome
- Root lengthe1
- Direction
- positivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“Root length showed a positive and significant correlation with all the biological parameters except stem diameter”
Claim · model-written summary
Stem diameter correlated negatively and significantly with most biological parameters.
- Taxon
- chickpeaCicer arietinumt0
- Organ / stage
- steme1
- Outcome
- stem diametere1
- Direction
- negativee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“stem diameter showed a negative significant correlation with all the biological parameters except leaf width and shoot fresh weight and positive with root fresh weight in case of gamma irradiated doses”
Claim · model-written summary
Stem diameter correlated positively with root fresh weight under gamma irradiation.
- Taxon
- chickpeaCicer arietinumt0
- Organ / stage
- steme1
- Treatment
- gamma irradiated dosese1
- Outcome
- stem diametere1
- Direction
- positivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“stem diameter showed a negative significant correlation with all the biological parameters except leaf width and shoot fresh weight and positive with root fresh weight in case of gamma irradiated doses”
Claim · model-written summary
129 chlorophyll mutants were identified in the M2 generation of chickpea.
- Taxon
- chickpeaCicer arietinumt0
- Organ / stage
- M2 generatione1
- Outcome
- chlorophyll mutantse1
- Value
- 129e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“In M2 generation of chickpea, 129 chlorophyll mutants were identified”
Claim · model-written summary
47 chlorophyll mutants were observed under 350 Gy (LD50).
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- 350 Gy (LD50)e1
- Outcome
- chlorophyll mutantse1
- Value
- 47e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“out of which 47 chlorophyll mutants were observed under 350 Gy (LD50)”
Claim · model-written summary
82 chlorophyll mutants were observed under 300 Gy.
- Taxon
- chickpeaCicer arietinumt0
- Treatment
- 300 Gye1
- Outcome
- chlorophyll mutantse1
- Value
- 82e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chickpea cultivar GNG 1958”
e1“82 chlorophyll mutants in 300 Gy”
The same questions in other papers
ethyl methanesulfonate · growth · Cicer arietinum (chickpea)Results differ
7 in the opposite direction
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3 papers in the same direction as this paper · 6 in the opposite direction
- no effect
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See all 10 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.