外源IAA对高粱幼苗内源激素含量及分蘖发生的影响

生态学杂志

外源IAA对高粱幼苗内源激素含量及分蘖发生的影响

周宇飞^1,2,闫彤¹,张姣¹,王艺陶³,王娜¹,吴奇¹,孙飞¹,许文娟¹,黄瑞冬^1*#br#

（¹沈阳农业大学农学院，沈阳 110866； ^2 高粱遗传与种质创新山西省重点实验室，山西晋中 030600； ^3辽宁省农业环境保护监测站，沈阳 110034）

出版日期:2017-08-10 发布日期:2017-08-10

Effects of exogenous IAA application on endogenous hormone contents and tillering in sorghum.

ZHOU Yu-fei^1,2, YAN Tong¹, ZHANG Jiao¹, WANG Yi-tao³, WANG Na¹, WU Qi¹, SUN Fei¹, XU Wen-juan¹, HUANG Rui-dong^1*#br#

(¹ College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China; ^2 Key Laboratory of Sorghum Genetics and Germplasm Enhancement of Shanxi Province, Jinzhong 030600, Shanxi, China; ^3Agroenvironmental Protection and Supervision Center, Shenyang 110034, China).

Online:2017-08-10 Published:2017-08-10

摘要/Abstract

摘要：

本试验以高粱品种“辽杂10”和“辽杂19”为试验材料，分别用0、100和200 mg·L^-1 3个浓度的IAA在高粱三叶期进行叶面喷施，研究外源IAA喷施对高粱内源激素含量及分蘖发生的影响。结果表明：喷施外源IAA在短时期内可以显著影响高粱内源激素的含量，喷施3 d后，高粱内源IAA和GA3含量显著升高，ZR和ABA含量显著降低；喷施6 d后，高粱内源IAA、GA₃和ABA含量明显回落，而ZR含量明显升高；外源IAA提高了高粱分蘖节第一和第四节位分蘖发生的概率，降低了第二节位分蘖发生的概率；外源IAA抑制了单株多个分蘖的产生，减少了单株2～3个分蘖发生的概率，使单株1个分蘖发生的概率有所增加；同时，外源IAA降低了高粱分蘖发生和无效分蘖产生的概率；外源IAA提高了高粱穗长、千粒重及穗粒重等主要农艺性状，对高粱产量的提升起到一定的促进作用。

关键词: 潮汐流人工湿地(TFCW), 生物蓄磷, 碳源, 磷移除, 聚磷菌(PAOs)

Abstract:

Two sorghum varieties (Liaoza 10 and Liaoza 19) were used as the plant materials and exogenous auxin (IAA) was sprayed on the plant leaves at the threeleaf stage with three concentrations of exogenous IAA (0, 100, 200 mg·L^-1, respectively). Effects of exogenous IAA application on endogenous hormone contents and tillering in sorghum were determined. Results showed that exogenous IAA application significantly affected the endogenous hormone contents of sorghum. Exogenous IAA application substantially increased endogenous IAA and gibberellic acid 3 (GA₃) contents but decreased zeatin riboside (ZR) and abscisic acid (ABA) contents in sorghum 3 days after spraying IAA. Endogenous IAA, GA₃ and ABA contents obviously declined but ZR content increased 6 days after the treatment of IAA. The exogenous IAA enhanced the probability of tillering at the first and fourth tillering nodes and decreased the probability of tillering at the second tillering node in sorghum. The exogenous IAA application inhibited the occurrence of multitillers by increasing the probability of a single tiller per plant. Meanwhile, the exogenous IAA reduced the tillering incidence and ineffective tillering rate. Exogenous IAA application increased the sorghum yield by promoting the main agronomic characteristics including panicle length, 1000grain weight, and grain weight per panicle.

Key words: phosphorus bioaccumulation, tidal flow constructed wetland (TFCW), phosphorus harvesting, carbon source, polyphosphate-accumulating organisms (PAOs)

周宇飞1,2,闫彤1,张姣1,王艺陶3,王娜1,吴奇1,孙飞1,许文娟1,黄瑞冬1*. 外源IAA对高粱幼苗内源激素含量及分蘖发生的影响[J]. 生态学杂志.

ZHOU Yu-fei1,2, YAN Tong1, ZHANG Jiao1, WANG Yi-tao3, WANG Na1, WU Qi1, SUN Fei1, XU Wen-juan1, HUANG Rui-dong1*. Effects of exogenous IAA application on endogenous hormone contents and tillering in sorghum.[J]. cje.

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