• ISSN 1008-505X
  • CN 11-3996/S
YAO Su-mei, WANG Wei-jin, CHEN Guo-xing. Effects of 5-Aminolevulinic acid on phosphate absorption and distributionin rice using 32P tracer method[J]. Journal of Plant Nutrition and Fertilizers, 2006, 12(1): 70-75. DOI: 10.11674/zwyf.2006.0112
Citation: YAO Su-mei, WANG Wei-jin, CHEN Guo-xing. Effects of 5-Aminolevulinic acid on phosphate absorption and distributionin rice using 32P tracer method[J]. Journal of Plant Nutrition and Fertilizers, 2006, 12(1): 70-75. DOI: 10.11674/zwyf.2006.0112

Effects of 5-Aminolevulinic acid on phosphate absorption and distributionin rice using 32P tracer method

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  • Using the two-line Japonica hybrid rice Ejingza 1 as the experimental material,effects of different concentrations(10 mg/L,30 mg/L,50 mg/L) of 5Aminolevulinic acid(ALA) applied at initial heading stage on the phosphate uptake and distribution in rice were studied using32P tracer method.The results were as follows: Both the 32P specific radioactivity and32P total radioactivity in panicle,leaf,stem and sheath,root of rice plant treated with 10—50 mg/L ALA were significantly higher than that of the control(0 mg/L ALA).The percentage of32P translocated to the panicles of rice plant treated with 10—50 mg/L ALA was significant higher than that of the control,and was,respectively,(increased) by 4.3%—6.0% during the flowering stage,4.1%—5.0% during the milking stage, and 2.0%—2.7% (during) the dough stage.These results suggested that treatments with 10—50 mg/L ALA increased32P uptake in rice plant and promoted32P translocation to the panicle organ.Correspondingly the plumpness and grain weight of rice plant treated with 10—50 mg/L ALA were considerably different with that of the control.Compared with the control,treatments with 10—50 mg/L ALA increased grain ripening percentage,and grain yield by 4.8%—9.9%,5.4%—14.9% respectively.Treatment with 30 mg/L ALA possessed the highest grain ripening percentage and grain yield.
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