干旱区生态环境知识资源中心(Arid): 4个杜鹃花品种对干旱胁迫的生理响应及抗旱性评价

Arid

	4个杜鹃花品种对干旱胁迫的生理响应及抗旱性评价
其他题名	Physiological response to drought stress and drought resistance evaluation of four Rhododendron cultivars
	高晓宁; 赵冰; 刘旭梅; 黄文梅
来源期刊	浙江农林大学学报
ISSN	2095-0756
出版年	2017
卷号	34 期号:4 页码:597-607
中文摘要	杜鹃花Rhododendron抗旱性较差,限制了它们在北方干旱地区园林绿化中的应用。研究杜鹃花的抗旱性可为它们在北方园林中的应用提供理论依据。以西洋杜鹃蓝茵’ Rh. Lan Yin’ 国旗红’ Rh. Quoqihong’ 爱丁堡’ Rh. Aidingbao’ 粉珍珠’ Rh. Fenzhenzhu’等4个杜鹃花品种为试验材料,研究其叶片解剖结构及不同程度干旱胁迫对杜鹃花品种叶片生理指标的影响,并用隶属函数法对其抗旱性进行评价,筛选与抗旱性关联较大的叶片解剖及生理指标。结果表明:随着干旱胁迫程度的增加, 4个品种的总含水量、可溶性糖、脯氨酸质量分数等显著升高(P<0.05),叶绿素、类胡萝卜素、可溶性蛋白质量分数、细胞膜稳定性等显著降低(P<0.05),超氧化物歧化酶、过氧化物酶活性等先显著增强后会受到一定的抑制(P<0.05), 蓝茵’和爱丁堡’的过氧化氢质量摩尔浓度随干旱胁迫的增加而下降, 国旗红’和粉珍珠’的过氧化氢质量摩尔浓度先显著降低再显著升高(P<0.05)。抗旱性为蓝茵’ < 国旗红’ < 粉珍珠’ < 爱丁堡’。叶片解剖结构上,栅栏组织厚度、栅栏组织厚度与海绵组织厚度比和叶片结构紧密度与杜鹃花抗旱性关联紧密,对应的相关度分别为0.850, 0.733, 0.711。生理指标上,脯氨酸质量分数、叶片相对含水量和过氧化氢质量摩尔浓度与杜鹃花抗旱性关联紧密,对应的相关度为: 0.893, 0.703, 0.699。以上6个指标可以作为评价杜鹃花抗旱性的主要指标。
英文摘要	Rhododendron has poor drought resistance, which limits its use in gardens of arid areas in North China. Therefore, study on the drought resistance of Rhododendron could provide a theoretical basis for its application in northern arid gardens. Four Rhododendron cultivars: Lan Yin’, Guoqihong’, Aidingbao’, and Fenzhenzhu’, were selected as test material, each cultivar contains 6 plants, and leaf anatomic structural characteristics and physiological responses to different degrees of drought stress were studied (2 factors 3 level complete randomized trial). A membership function was also used to rank drought resistance. Results illustrated that total water content of the leaf and the content of soluble sugar increased significantly as drought stress increased (P<0.05), but the content of chlorophyll, carotenoids, and the content of soluble proteins decreased significantly (P<0.05). In addition, cell membrane permeability significantly rose (P<0.05); whereas, superoxide dismutase (SOD) and peroxidase (POD) activities went up first then down. Furthermore, the H_2O_2 content of Lan Yin’, and Aidingbao’ declined as drought stress increased, but H_2O_2 content of Guoqihong’ and Fenzhenzhu’ decreased significantly (P<0.05) first and then increased significantly (P<0.05). Above all, the order of drought resistance was: Lan Yin’ < Guoqihong’ < Fenzhenzhu’ < Aidingbao’. Key indicators and relativities in evaluating drought resistance of these Rhododendron cultivars were thickness of palisade tissue, 0.850; thickness rate of palisade, 0.733; sponge tissue, 0.711; proline contents, 0.893; leaf relative water content, 0.703; and the content of H_2O_2, 0.699.
中文关键词	植物学 ; 杜鹃花 ; 干旱胁迫 ; 抗旱性
英文关键词	botany Rhododendron cultivars drought stress drought resistance
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Forestry
WOS研究方向	Forestry
CSCD记录号	CSCD:6032585
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236942
作者单位	高晓宁, 西北农林科技大学风景园林艺术学院, 杨凌, 陕西 712100, 中国.; 赵冰, 西北农林科技大学风景园林艺术学院, 杨凌, 陕西 712100, 中国.; 刘旭梅, 西北农林科技大学风景园林艺术学院, 杨凌, 陕西 712100, 中国.; 黄文梅, 西北农林科技大学风景园林艺术学院, 杨凌, 陕西 712100, 中国.
推荐引用方式 GB/T 7714	高晓宁,赵冰,刘旭梅,等. 4个杜鹃花品种对干旱胁迫的生理响应及抗旱性评价[J]. 西北农林科技大学,2017,34(4):597-607.
APA	高晓宁,赵冰,刘旭梅,&黄文梅.(2017).4个杜鹃花品种对干旱胁迫的生理响应及抗旱性评价.浙江农林大学学报,34(4),597-607.
MLA	高晓宁,et al."4个杜鹃花品种对干旱胁迫的生理响应及抗旱性评价".浙江农林大学学报 34.4(2017):597-607.