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Judul: | Evaluation of Phosphorus Use Efficiency in Four Breeding Lines of White Clover (Trifolium repens L.) |
Penulis: | J. Effendy || email: jbdpunpatti@yahoo.com |
Jurnal: | Budidaya Pertanian Vol. 6 no. 1 - hal. 6-10 Tahun 2010 [ Pertanian ] |
Keywords: | White clover, acid phosphatase, breeding lines, Pi content. |
Abstract: | Phosphorus deficiency is one of the most growth-limiting factors in acid soils in various parts of the world. The objective of this study was to screen 4 white clover breeding lines (Trifolium repens L.) at 0, 0.25, and 0.5 mM P. Pi content in shoot and acid phosphatase (APase) activity in root were related to tissue P concentrations and P-use efficiency. Shoot FW and root FW were found to be the plant growth parameter most sensitive to P deficiency. Significant breeding line differences in P use efficiency were found. BL 45 was found to be the most superior to all BLs in P uptake under P deficient condition. Phosphorus use efficiency was higher in shoot and decreased with increasing levels of P application. These results indicate selection of white clover breeding lines for satisfactory performance under low P availability can be carried out using shoot and root weight as criteria. |
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