Water stress and water use efficiency of ten white clover cultivars

Authors

  • M. Barbour
  • J.R. Caradus
  • D.R. Woodfield
  • W.B. Silvester

DOI:

https://doi.org/10.33584/rps.6.1995.3359

Abstract

Ten cultivars of white clover were grown in a glasshouse at three levels of soil moisture. Leaf productivity was greatly reduced by moisture stress. The productivity of cultivars was found to be significantly different under well-watered conditions. Larger-leaved cultivars tended to be more productive than those with smaller leaves, but this difference was lost at high moisture stress creating a significant cultivar by moisture treatment interaction. Water use efficiency (WUE) increased with increasing moisture stress, but within any one moisture level there were no significant differences between the cultivars. An integrated measure of WUE is captured by the level of discrimination against 13C in plants tissue (Ä). Over the range of moisture levels used, a strong negative correlation was found between Ä and WUE. A strong positive correlation was found between productivity and Ä over the range of moisture treatments, however, within any one moisture level no significant relationship was established. Keywords: carbon isotope discrimination, cultivars, moisture stress, Trifolium repens, water use efficiency

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Published

1996-01-01

How to Cite

Barbour, M., Caradus, J., Woodfield, D., & Silvester, W. (1996). Water stress and water use efficiency of ten white clover cultivars. NZGA: Research and Practice Series, 6, 159–162. https://doi.org/10.33584/rps.6.1995.3359

Issue

Vol. 6 (1995): White Clover: NZ's Competitive Edge

Section

Past volumes

License

Copyright

This work is licensed under a Creative Commons Attribution-Non Commercial-NoDerivatives 4.0 International License. Rights granted to the New Zealand Grassland Association through this agreement are non-exclusive. You are free to publish the work(s) elsewhere and no ownership is assumed by the NZGA when storing or curating an electronic version of the work(s). The author(s) will receive no monetary return from the Association for the use of material contained in the manuscript. If I am one of several co-authors, I hereby confirm that I am authorized by my co-authors to grant this Licence as their agent on their behalf. For the avoidance of doubt, this includes the rights to supply the article in electronic and online forms and systems.

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