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Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
Published on: July 16, 2019
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Study on induced mutants resembling commercial varieties in bread wheat.
1Cummings Laboratory, Indian Agricultural Research Institute, New Delhi, India.
Summary
Mutagenesis of wheat variety "Zaafrane" induced variants resembling established varieties. This suggests selective breeding is feasible for developing new wheat varieties and multiline components.
Area of Science:
- Plant breeding and genetics
- Crop improvement through mutation breeding
Background:
- Cultivated wheat varieties like 'Sonalika', 'Arjun', and 'Kalyansona' were developed through hybridization.
- The variety 'Zaafrane' is a key subject for mutation induction experiments.
Purpose of the Study:
- To investigate the occurrence of phenotypic variants in mutagen-treated 'Zaafrane' wheat populations.
- To explore the potential for selective reconstruction of wheat varieties and development of multiline varieties.
Main Methods:
- Induction of mutations in the 'Zaafrane' wheat variety.
- Phenotypic evaluation of subsequent generations for resemblance to existing cultivated varieties.
Main Results:
- Variants phenotypically similar to 'Sonalika', 'Arjun', and 'Kalyansona' were observed in mutagen-treated 'Zaafrane' populations.
- The study indicates that common genes are involved in the evolutionary history of these varieties, likely due to induced intervarietal mutants.
- Selective reconstruction of a specific bread wheat variety from a closely related one is demonstrated as possible and relatively easy.
Conclusions:
- Mutation breeding can generate variants resembling established wheat varieties.
- This method offers a viable technique for developing components of multiline wheat varieties.
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