Pedosphere 10(3): 213--220, 2000
ISSN 1002-0160/CN 32-1315/P
©2000 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Mechanisms of difference in Mn efficiency between wheat and oilseed rape |
| FANG Zheng1, ZHANG Yi-Gong1, ZHANG Fu-Suo2 and LU Shi-Hua3 |
1 Mountainous District Institute of Hebei Agricultural University, Baoding O71001 (China)
2 Department of Plant Nutrition, China Agricultural University, Beijing 100094 (China)
3 Institute of Soil and Fertilizer Research, Sichuan Academy of Agricultural Sciences, Chengdu 610066 (China) |
| ABSTRACT |
| By solution culture experiment, three wheat genotypes (Triticum aestivum L.) and two oilseed rape genotypes (Brassica napus L.) differing in Mn efficiency under Mn-deficient conditions were used to study mechanisms of the difference in Mn efficiency between wheat and oilseed rape. The results showed that there were significant differences in the abilities of MnIV reduction and acidification in root rhizosphere between the two species. Compared with wheat, oilseed rape had much higher reducing capacity and intensity of rhizosphere acidification under Mn-deficient conditions. Moreover, the higher ratio of functional leaves Mn/old leaves Mn in oilseed rape than in wheat was also an important factor for the different Mn efficiencies between the two species. |
| Key Words: genotypic difference, mechanism, Mn efficiency, oilseed rape, wheat |
| Citation: Fang, Z., Zhang, Y. G., Zhang, F. S. and Lu, S. H. 2000. Mechanisms of difference in Mn efficiency between wheat and oilseed rape. Pedosphere. 10(3): 213-220. |
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