Indian Society of Genetics & Plant Breeding


Response of maize genotypes to changing climatic conditions in Himalayan region

Published on Jul 27, 2018 10:20 AM

Maize is a major cereal grown in upland regions of
Himalayas especially, Himachal Pradesh, Sikkim, Nagaland
and Meghalaya. These states are part of Zone 1 region of
All India Co-ordinated Research Project of maize varietal
testing of the country. This study aims to assess the
change in trend of key traits viz., days to anthesis, days to
silk and yield in checks which are used for at least eight
years in a row in All India Co-ordinated Research Project
of maize in northern hills region. On studying the effect of
climate change in rainfall, a shift in peak of rainfall,
reduction in peak of total rainfall during the rainiest
months and low rainfall in the initial months of the maize
crop season was observed. In maize hybrid ‘Seed Tech
2324’, days to anthesis and silk have decreased by 0.31
and 0.11 days per year, respectively, while in ‘Bio 9681’
days to anthesis and silk decreased by 0.27 and 0.07 days
per year, respectively. Concomitently, there is an increase
in yield by 0.29 per cent and 0.10 per cent per year. Over
the years, the check genotypes showed change in days to
anthesis, days to silk and yield suggesting the importance
of crop genetic background in adaption. ‘Seed Tech 2324’
and ‘Bio 9681’ are more fit to climate change as compared
to ‘HIM 129’ and ‘Surya’. Suitable genotypes like ‘Seed Tech
2324’ and ‘Bio 9681’ showed increase in yield in changing
favourable conditions in Himalayan region

Keywords: Crop adaption, climate change, days to anthesis, days to silk, maize, hybrid


Year: 2012
Volume: 72
Issue: 2
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906


Vinay Mahajan*, K. P. Singh, R. Ambika Rajendran and Kanya info_circle
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