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Protocols in ecological and environmental plant physiology

 

Article << Previous     |     Next >>   Contents Vol 63(5)

High temperature tolerance in chickpea and its implications for plant improvement

V. Devasirvatham A B C, D. K. Y. Tan A, P. M. Gaur B, T. N. Raju A and R. M. Trethowan A

A Plant Breeding Institute, Faculty of Agriculture and Environment, University of Sydney, Cobbitty, NSW 2570, Australia.
B International Crops Research Institute for Semi-Arid Tropics, Patancheru 502324, Andhra Pradesh, India.
C Corresponding author. Email: viola.devasirvatham@sydney.edu.au

Crop and Pasture Science 63(5) 419-428 http://dx.doi.org/10.1071/CP11218
Submitted: 19 August 2011  Accepted: 7 June 2012   Published: 9 July 2012


 
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Abstract

Chickpea (Cicer arietinum L.) is an important food legume and heat stress affects chickpea ontogeny over a range of environments. Generally, chickpea adapts to high temperatures through an escape mechanism. However, heat stress during reproductive development can cause significant yield loss. The most important effects on the reproductive phase that affect pod set, seed set and yield are: (1) flowering time, (2) asynchrony of male and female floral organ development, and (3) impairment of male and female floral organs. While this review emphasises the importance of high temperatures >30°C, the temperature range of 32–35°C during flowering also produces distinct effects on grain yield. Recent field screening at ICRISAT have identified several heat-tolerant germplasm, which can be used in breeding programs for improving heat tolerance in chickpea. Research on the impact of heat stress in chickpea is not extensive. This review describes the status of chickpea production, the effects of high temperature on chickpea, and the opportunities for genetic improvement of chickpea tolerance to high temperatures.

Additional keywords: genetic variation, legumes, pollen, semi-arid tropics, tolerance.


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