不同浓度吲哚丁酸钾对大豆苗期生长发育及生理代谢的影响  

Effects of Different Concentrations of Potassium Indole Butyrate on Soybean Growth Development and Physiological Metabolism at Seedlings Stage

作　　者：刘美玲 冯乃杰[1,2,3] 郑殿峰 梁喜龙[1] 王诗雅 左官强[1] 靳丹 牟保民 LIU Mei-ling;FENG Nai-jie;ZHENG Dian-feng;LIANG Xi-long;WANG Shi-ya;ZUO Guan-qiang;JIN Dan;MU Bao-min(College of Agriculture,Heilongjiang Bayi Agriculture University,Daqing 163319,China;College of Coastal Agricultural Sciences,Guangdong Ocean University,Zhanjiang 524088,China;Shenzhen Research Insitute,Guangdong Ocean University,Shenzhen 518108,China)

机构地区：[1]黑龙江八一农垦大学农学院,黑龙江大庆163319 [2]广东海洋大学滨海农业学院,广东湛江524088 [3]广东海洋大学深圳研究院,深圳518108

出　　处：《大豆科学》2021年第2期217-223,共7页Soybean Science

基　　金：国家自然科学基金(31571613);黑龙江省自然科学基金重点项目(ZD2017003);国家重点研发计划(2017YFD0201306-03)。

摘　　要：为探究吲哚丁酸钾(IBA-K)对苗期大豆生长发育的影响,以大豆品种垦丰16和合丰50为试验材料,研究吲哚丁酸钾包衣剂量分别为0(CK),20,40,80,160和320 mg·kg^(-1)时,对苗期大豆叶片生长发育及生理代谢的调控效应。结果表明:与对照相比,不同剂量IBA-K包衣处理时苗期大豆地上部形态建成、光合作用、保护酶活性及渗透调节物质含量均有不同程度的提高,除株高外,均在IBA-K浓度为80 mg·kg^(-1)时达到最大值,且显著高于对照。垦丰16株高在IBA-K浓度为20和160 mg·kg^(-1)时达到最大,较对照均增加了10.78%;SOD活性在IBA-K浓度为80 mg·kg^(-1)时较其对照增加了4.81%。合丰50的株高和SOD活性在80 mg·kg^(-1)时达到最大,较对照显著增加了27.78%和8.83%。IBA-K处理下的垦丰16和合丰50 VPD分别较对照显著降低了17.24%和23.74%、MDA含量分别较对照显著降低了38.11%和46.44%。综上分析表明,采用80 mg·kg^(-1)IBA-K进行种子包衣处理时,对促进大豆苗期生长,提高大豆苗期的光合能力,增强大豆叶片抗氧化酶活性,降低MDA含量,提高渗透调节物质含量的效果最佳。In order to explore the effect of potassium indole butyrate(IBA-K) on the growth development and physiological metabolism at soybean seedling stage, this study took soybean varieties Kenfeng 16 and Hefeng 50 as the experimental materials, and studied the regulatory effects of IBK-K under 0(CK), 20, 40, 80, 160 and 320 mg·kg^(-1) , respectively. The results showed that, compared with the control, different doses of IBA-K coating treatment improved the morphogenesis, photosynthesis, protective enzyme activity and osmotic adjustment substance content of soybean at the seedling stage to varying degrees. Except for the plant height, all reached the maximum when the IBA-K concentration was 80 mg·kg^(-1), and was significantly higher than the control. The plant height of Kenfeng 16 reached the maximum when the IBA-K concentration was 20 and 160 mg·kg^(-1), which both increased by 10.78% compared with the control. The SOD activity of Kenfeng 16 increased by 4.81% when the IBA-K concentration was 80 mg·kg^(-1) compared with the control. The plant height and SOD activity of Hefeng 50 reached the maximum at 80 mg·kg^(-1), which was a significant increase of 27.78% and 8.83% than its control. Compared with the control, the VPD of Kenfeng 16 and Hefeng 50 under the IBA-K treatment were significantly reduced by 17.24% and 23.74%, and the MDA content was significantly reduced by 38.11% and 46.44%, respectively. The above analysis showed that when the concentration of IBA-K was 80 mg·kg^(-1) for seed coating treatment, it could effectively promote the growth of soybean seedlings, increase the photosynthetic capacity of soybeans, enhance the antioxidant enzyme activity of soybean leaves, reduce the MDA content, and increase the content of osmotic adjustment substances.

关 键 词：大豆 叶片 吲哚丁酸钾 生长发育 生理代谢 

分 类 号：S565.1[农业科学—作物学]