干旱区生态环境知识资源中心(Arid): 干旱胁迫对紫花苜蓿幼苗形态和生理特征的影响

Arid

	干旱胁迫对紫花苜蓿幼苗形态和生理特征的影响
其他题名	Effects of Drought Stress on Morphological and Physiological Characteristics of Alfalfa Seedlings
	王园园; 赵明; 张红香; 卢正宽; 穆春生
来源期刊	中国草地学报
ISSN	1673-5021
出版年	2021
卷号	43 期号:9 页码:78-87
中文摘要	为研究干旱胁迫对不同紫花苜蓿品种幼苗生长的影响,选取我国北方育成的5个耐寒苜蓿品种,采用盆栽实验的方式,模拟不同干旱胁迫水平(对照、轻度干旱、中度干旱和重度干旱)。通过测量紫花苜蓿幼苗农艺指标、形态和生理特征,并利用隶属函数综合评估各品种的耐旱性。研究结果表明,干旱胁迫程度显著影响苜蓿的形态和生理特征,随干旱胁迫程度的升高,各品种苜蓿形态性状中的地上生物量、基茎粗、株高、根长、叶片数和根瘤数下降,而根长、叶绿素含量和可溶性蛋白质含量表现为先升高后下降的趋势。经综合评价,5个品种抗旱性能力由强到弱依次为:敖汉苜蓿>公农1号>甘农3号>龙牧803>东苜1号。综上所述,敖汉苜蓿适合在重度干旱条件下种植,甘农3号适合在轻度和中度干旱条件下种植,公农1号在各干旱条件下种植表现均优。以上结果为紫花苜蓿的耐旱研究、抗旱选育及在干旱、半干旱地区的栽培种植提供了重要信息。
英文摘要	Five cold resistant alfalfa(Medicago sativa L.)varieties grown in northern part of China were selected to investigate the effects of drought stress on the seedling growth of different alfalfa varieties using pot experiment.Different drought stress levels(control, light, medium and severe)were simulated in the present study.By measuring agronomic indexes, morphological and physiological characteristics, the drought tolerance of each alfalfa variety was comprehensively evaluated by subordinate function.The results showed that the morphological and physiological characteristics of alfalfa were significantly affected by drought stress.With the increase of drought stress, the aboveground biomass, basal stem diameter, plant height, root length, number of leaves and nodule of alfalfa varieties were decreased, while the root length, chlorophyll content and soluble protein content of alfalfa varieties were increased first and then decreased.After, comprehensive evaluation, the drought resistance of the five cultivars was as follows: "Aohan" >"Gongnong 1" >"Gannong 3" >"Longmu 803" >"Dongmu 1".In conclusion, "Aohan" was suitable for planting under severe drought conditions."Gannong 3" was suitable for planting under mild and moderate drought conditions, while "Gongnong 1" had superior performance under all drought conditions.This study provided important information for drought tolerance evaluation, drought resistance breeding, and cultivation of alfalfa in arid and semi-arid areas.
中文关键词	紫花苜蓿 ; 耐旱性 ; 耐寒品种 ; 生理特征 ; 生物量
英文关键词	Alfalfa Drought tolerance Cold resistant variety Physiological characteristics Biomass
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7058140
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378063
作者单位	王园园, 东北师范大学生命科学学院;;中国科学院东北地理与农业生态研究所, ;;, 长春;;长春, 吉林;;吉林 130024;;130102, 中国.; 赵明, 中国科学院植物研究所, 北京 100093, 中国.; 张红香, 中国科学院东北地理与农业生态研究所, 长春, 吉林 130102, 中国.; 卢正宽, 中国科学院东北地理与农业生态研究所, 长春, 吉林 130102, 中国.; 穆春生, 东北师范大学生命科学学院, 长春, 吉林 130024, 中国.
推荐引用方式 GB/T 7714	王园园,赵明,张红香,等. 干旱胁迫对紫花苜蓿幼苗形态和生理特征的影响[J],2021,43(9):78-87.
APA	王园园,赵明,张红香,卢正宽,&穆春生.(2021).干旱胁迫对紫花苜蓿幼苗形态和生理特征的影响.中国草地学报,43(9),78-87.
MLA	王园园,et al."干旱胁迫对紫花苜蓿幼苗形态和生理特征的影响".中国草地学报 43.9(2021):78-87.