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中国农学通报 ›› 2020, Vol. 36 ›› Issue (33): 1-6.doi: 10.11924/j.issn.1000-6850.casb2020-0024

所属专题: 水稻

• 农学·农业基础科学 •    下一篇

抗寒剂的叶喷施用方法及其对水稻秧苗抗寒性的影响

任勃1(), 王翰盈2, 付婷钰3, 文祝友4, 熊海蓉3, 张先文2()   

  1. 1湖南农业大学资源环境学院,长沙 410128
    2湖南农业大学生物科学技术学院,长沙 410128
    3湖南农业大学化学与材料科学学院,长沙 410128
    4湖南农业大学动物科学技术学院,长沙 410128
  • 收稿日期:2020-04-20 修回日期:2020-06-09 出版日期:2020-11-25 发布日期:2020-11-18
  • 通讯作者: 张先文
  • 作者简介:任勃,男,1974年出生,陕西咸阳人,博士。研究方向:农业气象灾害防灾减灾。通信地址:410128 长沙市芙蓉区农大路1号 湖南农业大学资源环境学院,Tel:0731-84617803,E-mail: csrenbo@163.com
  • 基金资助:
    科技部国家重点研发计划项目“双季稻全程机械化丰产节本增效关键技术”(2017YFD0301503);“双季稻病虫草害绿色防控与避灾减损关键技术”(2017YFD0301505);作物种质创新与资源利用重点实验室(省部共建国家重点实验室培育基地)科学基金开放项目“植物源型抗寒剂提高水稻耐冷性状的分子机理研究”(19KFXM07);湖南农业大学校级大学生研究性学习和创新性实验计划项目“水稻TCP21基因在胁迫响应过程中的表达和功能鉴定”(xcx19116)

Cold-resistant Agent: Foliar Spraying Application Method and Its Effect on Cold Resistance of Rice Seedlings

Ren Bo1(), Wang Hanying2, Fu Tingyu3, Wen Zhuyou4, Xiong Hairong3, Zhang Xianwen2()   

  1. 1College of Resources & Environment, Hunan Agricultural University, Changsha 410128
    2College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128
    3Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128
    4College of Animal and Technology, Hunan Agricultural University, Changsha 410128
  • Received:2020-04-20 Revised:2020-06-09 Online:2020-11-25 Published:2020-11-18
  • Contact: Zhang Xianwen

摘要:

为了探明抗寒剂KHYE-1的叶喷施用方法及其对水稻秧苗抗寒性的影响。以早稻品种‘中嘉早17’为材料,用抗寒剂叶喷水稻秧苗并进行低温胁迫处理,用化学法、生化法测得生化数据。结果表明KHYE-1的最佳叶喷施用方法为叶喷浓度0.5%、叶喷次数为1次/天,连续3天、叶喷用量5.0 g/盒;在低温胁迫下,KHYE-1叶喷处理使秧苗N、P、K含量及叶绿素SPAD值维持较高水平,可溶性糖和脯氨酸分别比CK提高了147.4%和72.0%,过氧化物酶(POD)、过氧化氢酶(CAT)活性分别比CK增加了80.2%、2.63%。其整体效果优于ABA。抗寒剂KHYE-1能有效增强秧苗抵抗低温胁迫的能力。

关键词: 水稻, 抗寒剂, 叶面喷施, 抗寒性, 低温胁迫

Abstract:

The purpose is to study the foliar spraying application method of cold-resistant agent KHYE-1 and its effect on cold resistance of rice seedlings. The early rice variety ‘Zhongjiazao 17’ was used as material, the seedlings were treated with cold-resistant agent and cold stress, and the biochemical indexes of seedlings were further detected with chemical and biochemical method. The results showed that the best application method of KHYE-1 was spray concentration of 0.5%, one time per day for 3 days and spray dosage of 5.0 g/box. Compared with CK, the content of N (Nitrogen), P (Phosphorus), K (Potassium) and the value of chlorophyll SPAD in rice seedlings treated with cold-resistant agent under cold stress maintained at a relatively high level, and the content of soluble sugar and proline increased by 147.4% and 72.0%, and the activities of peroxidase (POD) and catalase (CAT) were 80.2% and 2.63% higher, respectively. In conclusion, the overall effect of KHYE-1 is better than that of ABA, and it could improve the cold-resistance of rice seedlings.

Key words: rice, cold-resistant agent, foliar spraying, cold resistance, cold stress

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