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Evaluation of barnyard millet diversity in central Himalayan region for environmental stress tolerance

Published online by Cambridge University Press:  22 August 2017

A. K. TRIVEDI*
Affiliation:
ICAR – National Bureau of Plant Genetic Resources, Regional Station, Bhowali–263 132, Nainital, Uttarakhand, India
L. ARYA
Affiliation:
ICAR – National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi–110012, India
S. K. VERMA
Affiliation:
ICAR – National Bureau of Plant Genetic Resources, Regional Station, Bhowali–263 132, Nainital, Uttarakhand, India
R. K. TYAGI
Affiliation:
ICAR – National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi–110012, India
A. HEMANTARANJAN
Affiliation:
Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi–221 005, India
*
*To whom all correspondence should be addressed. Email: ajayakumartrivedi@gmail.com

Summary

The mountain ecosystem of the Central Himalayan Region is known for its diversity of crops and their wild relatives. In spite of adverse climatic conditions, this region is endowed with a rich diversity of millets. Hence, the aim of the present study was to explore, collect, conserve and evaluate the diversity of barnyard millet (Echinochloa frumentacea) to find out the extent of diversity available in different traits and the traits responsible for abiotic stress tolerance, and to identify trait-specific accessions for crop improvement and also for the cultivation of millets in the region as well as in other similar agro-ecological regions. A total of 178 accessions were collected and evaluated for a range of morpho-physiological and biochemical traits. Significant variability was noted in days to 50% flowering, days to 80% maturity, 1000 seed weight and yield potential of the germplasm. These traits are considered to be crucial for tailoring new varieties for different agro-climatic conditions. Variations in biochemical traits such as lipid peroxidation (0·552–7·421 nmol malondialdehyde formed/mg protein/h), total glutathione (105·270–423·630 mmol/g fresh weight) and total ascorbate (4·980–9·880 mmol/g fresh weight) content indicate the potential of collected germplasm for abiotic stress tolerance. Principal component analysis also indicated that yield, superoxide dismutase activity, plant height, days to 50% flowering, catalase activity and glutathione content are suitable traits for screening large populations of millet and selection of suitable germplasm for crop improvement and cultivation. Trait-specific accessions identified in the present study could be useful in crop improvement programmes, climate-resilient agriculture and improving food security in areas with limited resources.

Information

Type
Climate Change and Agriculture Research Paper
Copyright
Copyright © Cambridge University Press 2017 

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