新疆农业科学 ›› 2021, Vol. 58 ›› Issue (8): 1486-1492.DOI: 10.6048/j.issn.1001-4330.2021.08.015

• 植物保护·园艺特产·生理生化·农业装备工程与机械化 • 上一篇    下一篇

狗牙根地下芽休眠进程中生理物质的变化规律

王雪如, 闫锋, 张海燕, 马金燕, 张延辉   

  1. 新疆农业大学草业与环境科学学院/西部干旱荒漠区草地资源与生态教育部重点实验室/新疆草地资源与生态自治区重点实验室,乌鲁木齐 830052
  • 收稿日期:2020-06-08 出版日期:2021-08-20 发布日期:2021-08-09
  • 通信作者: 张延辉(1980),男,新疆乌鲁木齐人,副教授,博士,研究方向为草坪草育种,(E-mail)zyh198012@163.com
  • 作者简介:王雪如(1994),女,新疆乌鲁木齐人,硕士研究生,研究方向为绿地与草坪景观学,(E-mail)271624114@qq.com
  • 基金资助:
    国家自然科学基金(31560661);自治区重点研发计划(2018B01006-4);国家牧草产业技术体系(CARS34);自治区高校科研计划项目(XJEDU2020Y013)

Changes of Physiological Substances during the Dormancy of Underground Buds of Cynodon dactylon (L.) Pers.

WANG Xueru, YAN Feng, ZHANG Haiyan, MA Jinyan, ZHANG Yanhui   

  1. Key Laboratory of West Arid Region Grassland Resources and Ecology/Xinjiang Key Laboratory of Soil and Plant Ecological Processes / College of Pratacultural and Environmental Sciences,Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2020-06-08 Online:2021-08-20 Published:2021-08-09
  • Correspondence author: ZHANG Yanhui (1980-), male,Urumqi, China, doctor, Associate Professor, research field: Research on TurfgrassBreeding,(E-mail)zyh198012@163.com
  • Supported by:
    National Natural Science Foundation of China (31560661); Key R & D Project of Xinjiang Uygur Autonomous Region(2018B01006-4); China Agricultre Research System (CARS-35); University R & D Project of Xinjiang Uygur Autonomous Region (XJEDU2020Y013).

摘要: 目的】研究狗牙根地下芽休眠的生理响应规律,分析狗牙根休眠时生理物质响应规律,为研究狗牙根休眠机制奠定基础。【方法】采集8种不同地区狗牙根的地下芽,对狗牙根芽体进行渗透调节、膜质氧化、酶活性等生理指标的测定。【结果】狗牙根芽体内生理物质随着休眠进程不断演变(夏-初秋-深秋),芽中游离脯氨酸和可溶性蛋白含量不断升高,并且在8种狗牙根中均表现出一致性;SOD、POD含量在初秋(休眠启动)时达到顶峰,后缓慢下降,呈先升高后降低的趋势,酶活性在休眠启动时大量累积;MDA含量增加,休眠过程伴随着膜脂的氧化。【结论】生理物质在狗牙根休眠中发挥重要作用,可将游离脯氨酸和可溶性蛋白大量升高作为参考指标判定休眠的起始。

关键词: 狗牙根; 休眠; ; 生理物质

Abstract: ObjectiveCynodon dactylon (L.) Pers. is a kind of warm-season turfgrass, which slowly enters the yellowish state after entering autumn, that is, it enters a dormant state. The underground rhizomes and buds of it support its life. The physiological substances in the buds play an important role in responding to dormancy. Understanding the physiological response of dormancy can guide the establishment and management of bermudagrass.【Method】 In this paper, the underground buds of bermudagrass from 8 different regions were collected, and physiological indicators such as osmotic adjustment, membrane oxidation, and enzyme activity of Cynodon dactylon (L.) Pers. was measured.【Result】 The physiological substances in bermudagrass buds kept evolving with the dormant process (summer - early autumn - late autumn), and the content of free proline and soluble protein in the buds increased continuously, and showed consistency in 8 bermudagrass; The content of SOD and POD reached its peak in the early autumn (dormant start), and then slowly decreased, showing a trend of first increase and then decrease, indicating that the enzyme activity accumulated at the start of dormant; the increase of MDA content indicated that the dormant process was accompanied by oxidation of membrane lipids.【Conclusion】 It can be seen from this that physiological substances play an important role in bermudagrass dormancy. A large increase in free proline and soluble protein can be used as a reference index to determine the beginning of dormancy. This study reveals the physiological substance response during bermudagrass dormancy and lays the foundation for further exploring the dormancy mechanism of Cynodon dactylon (L.) Pers.

Key words: Cynodon dactylon (L.) Pers.; dormancy; bud; physiological substance

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

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