华北农学报 ›› 2007, Vol. 22 ›› Issue (2): 136-140. doi: 10.3321/j.issn:1000-7091.2007.02.033

所属专题: 小麦

• 论文 • 上一篇    下一篇

多效唑对小麦叶片衰老及产量的影响

曾旭1, 张怀琼1, 罗培高1, 任正隆1,2   

  1. 1. 四川农业大学作物遗传育种省级重点实验室, 四川 雅安 625014;
    2. 电子科技大学生命科学与技术学院, 四川 成都 610054
  • 收稿日期:2007-02-03 出版日期:2007-04-28
  • 通讯作者: 任正隆(1949-),男,四川彭州人,教授,博士生导师,主要从事分子细胞生物学及小麦育种研究。
  • 作者简介:曾旭(1982),男,四川屏山人,硕士,主要从事小麦衰老生理研究。
  • 基金资助:
    国家自然科学基金项目(30671136)

Effect of Paclobutrazol on Leaf Senescence and Yield of Wheat

ZENG Xu1, ZHANG Huai-qiong1, LUO Pei-gao1, REN Zheng-long1,2   

  1. 1. Key Laboratary of Plant Breeding and Genetics, Sichuan Agricultural University, Ya'an 625014, China;
    2. College of Life Science and Technology, University of Electronic Science and Technology, Chengdu 610054, China
  • Received:2007-02-03 Published:2007-04-28

摘要: 为探明多效唑(PP333)对小麦叶片衰老生理生化及产量的影响,在小麦拔节期,以不同质量浓度(0,100,200和400 mg/L)的多效唑水溶液进行叶面喷施处理,分别测定扬花后不同天数小麦旗叶的叶绿素含量、净光合速率、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、丙二醛含量(MDA)、可溶性蛋白质以及与产量性状相关的指标。结果表明,适当质量浓度(100,200 mg/L)的多效唑处理能有效地延缓小麦灌浆至成熟期旗叶叶绿素含量和净光合速率的下降,增强了超氧化物歧化酶和过氧化氢酶的活性,有效地抑制了膜脂氧化,从而使得小穗数、穗粒重、千粒重等性状比对照明显提高。

关键词: 多效唑, 小麦, 衰老, 叶绿素含量, 光合速率

Abstract: To determine the effect of the Paclobutrazo1 on wheat physiological and yield, during the wheat elongation stage, different concentration of the Paclobutrazo1 solution (0, 100, 200 and 400 mg/L) were sprayed on the wheat leaves, the content of chlorophyll, net photosynthetic rate, superoxide dismutase activity (SOD), catalase activity (CAT) of the flag leaf, the content of malondialdehyde (MDA), soluble protein content and the index on economic output in the seeds were measured in different periods after spraying. The results showed that proper concentrations of the Paclobutrazo1 (100, 200 mg/L) could delay the decrease of chlorophyll content and net photosynthetic rate, increase the SOD activity and CAT activity, and inhibit the lipid peroxidation effectually. Consequently, the spikelets and grain weight and 1000-grain weight etc. improved significantly than that of the control without Paclobutrazo1.

Key words: Paclobutrazo1, Wheat, Senescence, Content of chlorophyll, Net photosynthetic rate

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引用本文

曾旭, 张怀琼, 罗培高, 任正隆. 多效唑对小麦叶片衰老及产量的影响[J]. 华北农学报, 2007, 22(2): 136-140. doi: 10.3321/j.issn:1000-7091.2007.02.033.

ZENG Xu, ZHANG Huai-qiong, LUO Pei-gao, REN Zheng-long. Effect of Paclobutrazol on Leaf Senescence and Yield of Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(2): 136-140. doi: 10.3321/j.issn:1000-7091.2007.02.033.

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