Kashiwagi, J and Krishnamurthy, L and Singh, Sube and Gaur, P M and Upadhyaya, H D and Panwar, J D S and Basu, P S and Ito, O and Tobita, S (2006) Relationships between Transpiration Efficiency and Carbon Isotope Discrimination in Chickpea (C. arietinum L). Journal of SAT Agricultural Research, 2 (1). pp. 1-3. ISSN 0973-3094
![[img]](http://oar.icrisat.org/style/images/fileicons/application_pdf.png)
|
PDF
Download (330kB) | Preview |
Abstract
Since major cultivation areas of chickpea (Cicer arietinum L.) are in the arid and semi-arid zones, terminal drought is one of the major constraints limiting its productivity. Simple analytical crop models can help in identifying key strategies to improve the chickpea productivity under drought. For example, Passioura (1977) had proposed that the yield is a function of transpiration, transpiration efficiency (TE) defined as the biomass production per unit of water transpired, and harvest index. As improvement of TE means maximization of crop production per unit of water use, it is one of the important components for improving the drought resistance (Turner et al. 2001). Although TE had been recognized as a highly relevant trait, so far very little research effort had been made towards field screening for it, especially due to the difficulties in measuring TE in any screening method. The method developed by Farquhar et al. (1982) for estimating TE through measuring the discrimination against 13C by leaves during photosynthesis, and establishment of a close relationship between the carbon isotope discrimination (δ13C) and TE in many legume crops such as bean, cowpea, groundnut, and soybean has provided an useful method of screening. This gave scope for using δ13C as an indirect screening tool for TE. In chickpea, however, there is no information available on the relationship between δ13C and TE. The major objectives of this study were to check if there are any variations available for δ13C, to investigate the relationship between δ13C and TE, and to ascertain the possibility of using δ13C as a surrogate for TE measurements.
| Item Type: | Article |
|---|---|
| Divisions: | UNSPECIFIED |
| CRP: | UNSPECIFIED |
| Subjects: | Mandate crops > Chickpea |
| Depositing User: | Library ICRISAT |
| Date Deposited: | 15 Oct 2011 04:04 |
| Last Modified: | 19 Mar 2012 10:38 |
| URI: | http://oar.icrisat.org/id/eprint/2512 |
| Official URL: | http://www.icrisat.org/journal/cropimprovement/v2i... |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | UNSPECIFIED |
| Links: |
Actions (login required)
 |
View Item |
Altmetric
Altmetric