Genotypic differences in Zn efficiency of Medicago species |
| |
| Authors: | Tania C. Streeter Zdenko Rengel Robin D. Graham |
| |
| Affiliation: | (1) Department of Biological Sciences, Lancaster University, Lancaster, LA1 5PE, U.K.;(2) Soil Science and Plant Nutrition, University of Western Australia, Nedlands, WA, 6907, Australia;(3) Department of Plant Science, University of Adelaide, PMB 1, Glen Osmond, SA, 5064, Australia |
| |
| Abstract: | Nineteen annual Medicago genotypes from eight species were grown in Mt. Compass sand at three levels of soil Zn application (0, 0.1 and 0.9 mg Zn kg-1) to achieve Zn status from deficiency to adequacy. Genotypes differed in growth response: under Zn deficiency, those classified as Zn-efficient had less reduction in shoot growth, a higher root mass, greater concentration of Zn in the shoot and total Zn content per plant, and a stable shoot/root ratio compared with Zn-inefficient genotypes. While seed Zn content did not influence the Zn-efficiency ranking, it did affect yield, and so it plays an important role in yield response and Zn accumulation as Zn supply decreases. This revised version was published online in July 2006 with corrections to the Cover Date. |
| |
| Keywords: | medic relative yield shoot/root ratio Zn deficiency zinc |
| 本文献已被 SpringerLink 等数据库收录！ |
|
