期刊
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
卷 307, 期 2, 页码 1055-1063出版社
SPRINGER
DOI: 10.1007/s10967-015-4282-3
关键词
Isotope dilution technique; Root traits; P acquisition; P-32; Phosphate fertilizer
The main aims of this study were to evaluate the P uptake of Brazilian wheat cultivars and to identify the root traits involved in P uptake capacity. Two greenhouse studies were carried out. An isotopic dilution technique with P-32 as a tracer was used in the first experiment. The root morphology and architecture was evaluated in the second experiment. The results indicated differences in P uptake between the cultivars. The cultivars with higher values of P uptake exhibited total root shallow, which enhances root proliferation in P-rich surface soil. Twenty-one cultivars showed potentially greater phosphorus uptake efficiency, and we observed the importance of root traits for improving the P uptake ability.
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