| Regulation of water use efficiency of summer maize by plant growth regulator in well\|irrigation area of Huang\|Huai\|Hai River |
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| DOI：10.7606/j.issn.1000-7601.2019.06.07 |
| Key Words: plant growth regulator summer maize water use efficiency lodging plant hormone |
| Author Name | Affiliation | | ZHANG Weiqiang | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture, Xinxiang, Henan 453002, China
Henan Institute of Science and Technology for Development, Zhengzhou, Henan 450003, China | | ZHAO Ben | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture, Xinxiang, Henan 453002, China | | QIN Anzhen | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture, Xinxiang, Henan 453002, China | | NING Dongfeng | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture, Xinxiang, Henan 453002, China | | SUN Bin | Xuchang Farmland Water Conservancy Technology Experimentation and Extension Station, Xuchang, Henan 461000, China | | DING Pengfei | Xuchang Farmland Water Conservancy Technology Experimentation and Extension Station, Xuchang, Henan 461000, China | | LIU Jian | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture, Xinxiang, Henan 453002, China
Xuchang Farmland Water Conservancy Technology Experimentation and Extension Station, Xuchang, Henan 461000, China | | ZANG Haitao | Xuchang Farmland Water Conservancy Technology Experimentation and Extension Station, Xuchang, Henan 461000, China | | LIU Zhandong | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture, Xinxiang, Henan 453002, China | | XIAO Junfu | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture, Xinxiang, Henan 453002, China |
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| Abstract: |
| The development and application of plant growth regulators provide potentials for high and stable yield and water saving in maize production. This experiment was conducted to study plant growth regulator effects in Xinxiang, Henan Province in 2018. Three hybrid maize cultivars (JNK728, XD61, and XY335) were selected as experimental crops for water use efficiency. In this study, the experiment design was a split randomized block design. The main block was cultivar and the sub\|blocks were plant growth regulator treatment and the control with spraying pure water only. The results showed that maize yield and water use efficiency were affected significantly (P<0.05) by genotypes differences of summer maize. Plant growth regulators significantly improved water use efficiency and grain yield on all cultivars of maize (P<0.05). The highest increase in water use efficiency was 3.12%, and the highest increase in grain yield was 3.09%. Plant growth regulators significantly reduced lodging (P<0.05) and the highest decrease in lodging was 90.00%, which remodeled the plant type of maize. The mechanism of the effect in plant growth regulators on maize water use efficiency may be due to that they changed the expression of key genes in hormone signal transduction, and then changed the contents of endogenous hormones such as GA3 and ABA. |
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