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Evaluation of proline accumulation as an indicator of drought tolerance in spring wheat cultivars

 

作者: van HeerdenP.D.R.,   de VilliersO.T.,  

 

期刊: South African Journal of Plant and Soil  (Taylor Available online 1996)
卷期: Volume 13, issue 1  

页码: 17-21

 

ISSN:0257-1862

 

年代: 1996

 

DOI:10.1080/02571862.1996.10634368

 

出版商: Taylor&Francis Group

 

关键词: Drought stress;drought tolerance;proline accumulation;spring wheat;Triticum aestivumL.

 

数据来源: Taylor

 

摘要:

The aim of this study was to evaluate proline accumulation as an indicator of drought stress and drought tolerance in spring wheat cultivars (Triticum aestivumL.) grown in the Western Cape. Drought stress was induced in whole plants and leaf discs in two cultivars with known drought tolerance, namely, Gamtoos (drought tolerant) and S ST 66 (slightly drought sensitive), as well as in two cultivars with unknown drought tolerance, namely, Nantes and SST 44. To assess the effect of growth stage on the reaction of the cultivars to drought stress, stress was induced during pre-anthesis and also during anthesis. Proline accumulation in whole plants showed clear genotypical differences during pre-anthesis and, to a lesser extent, during anthesis. A positive correlation between the degree (onset and extent) of proline accumulation and drought tolerance was found for Gamtoos and SST 66. Proline accumulation patterns in leaf discs did not correlate with results obtained with whole plants.

 

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