Chinese Journal OF Rice Science

Chinese Journal OF Rice Science >

2010 , Vol. 24 >Issue 1: 43 - 48

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.01.08

研究报告

Effects of Phosphorus Level on the Activity of Acid Phosphatase in Roots of Hybrid Rice and Its Parents

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  • 1College of Resource and Environment, Sichuan Agricultural University, Ya′ an 625014, China; 2College of Forestry and Horticulture,
    Sichuan Agricultural University, Ya′ an 625014, China； *Corresponding author, E-mail: wcquan@sicau.edu.cn

Received date: 1900-01-01

  Revised date: 1900-01-01

  Online published: 2010-01-10

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Abstract

The activities of acid phosphatase (APase) in roots of hybrid rice and its parents at the tillering, booting and filling stages were studied with 7 rice parents and their combinations as materials in a solution culture experiment with different phosphorus levels to provide a foundation for screening high phosphorusefficient hybrid rice. The activities of APase in roots differed under different P levels among maintainer lines. Under low P level, the activity of APase in roots of Ⅱ32B (Pinefficient type) was not significantly higher than that of the control(suitable P level) at the tillering stage. The tolerance of D62B and D83B (Pefficient type) to low P stress was enhanced notably with increased activity of APase in roots. Meanwhile, there existed the differences in APase activities in roots of the restorer lines. Compared with the control, the activity of APase in roots of R892 and R527 (Pefficient type) increased significantly at the tillering and booting stages under low P levels. Whereas, the activities of APase in roots of R549 and R781(Pinefficient type) increased significantly only at the tillering stage. The increasing extents of APase activity in roots of the hybrid rice combination derived from different parents were also different. In the three periods, the differences in APase activity in roots of Ⅱyou 549(Pinefficient type) under low P level and the control were not notable, but the APase activity in roots of D83A/R527(Pefficient type) under low P level increased significantly compared to the check. The increasing extent of APase activity in roots of Ⅱyou 549 derived from Ⅱ32B and R549 was not significant at all the stages. The APase activity in roots of D83A/R527 from D83B and R527 increased markedly under low P level. And the increasing extents of APase activity in roots of Ⅱyou 892 (Ⅱ32B×R892) and D62A/R781 (D62B×R781) were between Ⅱyou 549 and D83A/R527 under low P level.

Key words： phosphorus stress; hybrid rice; acid phosphatase activity

Cite this article

YAN Kuan,WANG Chang-quan , LI Huan-xiu,LI Bing, YANG Juan,YUAN Da-gang . Effects of Phosphorus Level on the Activity of Acid Phosphatase in Roots of Hybrid Rice and Its Parents[J]. Chinese Journal OF Rice Science, 2010 , 24(1) : 43 -48 . DOI: 10.3969/j.issn.1001-7216.2010.01.08

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