干旱区生态环境知识资源中心(Arid): 十种荒漠植物种子萌发对温度的响应

Arid

	十种荒漠植物种子萌发对温度的响应
其他题名	Germination response to temperature of ten desert plant species
	白梦杰; 陶奇波; 韩云华; 王彦荣
来源期刊	草业学报
ISSN	1004-5759
出版年	2019
卷号	28 期号:12 页码:53-62
中文摘要	温度是影响植物种子萌发和出苗最重要的环境因子之一,研究植物种子萌发对温度的响应,对确定物种的适宜播种时期和预测田间出苗率等有着重要的意义。以10种荒漠植物:沙冬青、白沙蒿、沙打旺、中间锦鸡儿、柠条锦鸡儿、无芒隐子草、梭梭、杨柴、花棒和霸王种子为材料,在5~40℃范围设置了8个温度条件,测定种子萌发的动态变化,通过积温模型分析了供试植物种子萌发的温度三基点:萌发的基础温度(Tb)、适宜温度(To)、最高温度(Tc)以及萌发的温度时间值(thetaT)。结果表明:在参试物种阈值中,To以无芒隐子草最高,为33.7℃,其次是沙冬青为28.3℃,其他物种在17.4~24.9℃;Tb以沙打旺最低,为0.3℃,其次是梭梭为1.9℃,其他物种介于6.7~15.0℃;Tc以梭梭最高,为45.3℃,其次是无芒隐子草为43.9℃、沙打旺43.3℃、沙冬青39.7℃,其余物种在25.0~ 34.2℃;梭梭萌发温度范围最大,为1.9~45.3℃,而霸王最小,为15.0~30.0℃。供试物种在亚适温条件下,种子萌发的温度时间值从小到大依次为:沙冬青(79℃·d)、梭梭(94℃·d)、白沙蒿(114℃·d)、杨柴(127℃·d)、霸王(132℃·d)、花棒(177℃·d)、沙打旺(184℃·d)、中间锦鸡儿(217℃·d)、柠条锦鸡儿(302℃·d)、无芒隐子草(334℃·d)。
英文摘要	Temperature is considered one of the most important environmental factors governing seed germination and seedling emergence.Therefore,knowledge of the seed germination response to temperature has is an important criterion when determining the appropriate planting time and predicting the seedling emergence of species in the field.Seeds of Ammopiptanthus mongolicus,Artemisia sphaerocephala,Astragalus adsurgens, Caragana intermedia,Caragana korshinskii,Cleistogenes songorica,Haloxylon am modendron,Hedysarum fruticosum,Hedysarum scoparium and Zygophyllum xanthoxylum,were used in this study.The dynamics of seed germination were determined over a range of constant temperatures from 5 to 40℃at 5℃intervals. The temperature thresholds(Tb,To,Tc,thetaT)of ten desert plant species were calculated according to the thermal time model.The results showed that:in the test species,the optimum temperature(To)was 33.7℃for C.songorica,28.3℃for A.mongolicus and for other species ranged from 17.4 to 24.9℃.The base temperature was 0.3℃for A.adsurgens,followed by H. ammodendron at 1.9℃,with other species ranging between 6.7 and 15.0℃.The ceiling temperature was 45.3℃for H. ammodendron,with C.songorica being 43.9℃, A.adsurgens 43.3℃,A.mongolicus 39.7℃,and the other species ranging from 25.0 to 34.2℃.The largest germination temperature ranges were 1.9 to 45.3℃for H. ammodendron and 15.0 to 30.0℃for Z.xanthoxylum. The thermal time requirement for germination,from lowest to highest,was:A.mongolicus (79℃·d), H. ammodendron (94℃·d),A.sphaerocephala (114℃·d),H. fruticosum (127℃·d),Z.xanthoxylum (132℃·d),H. scoparium (177℃·d),A.adsurgens(184℃·d),C.intermedia (217℃·d),C.korshinskii (302℃·d),C.songorica (334℃·d).
中文关键词	荒漠植物 ; 种子萌发 ; 积温模型 ; 温度阈值 ; 温度时间值
英文关键词	desert plant species seed germination thermal time model temperature thresholds thermal time value
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6633261
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316185
作者单位	兰州大学草地农业科技学院, 草地农业生态系统国家重点实验室;;农业农村部草牧业创新重点实验室;;草地农业教育部工程研究中心, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	白梦杰,陶奇波,韩云华,等. 十种荒漠植物种子萌发对温度的响应[J]. 兰州大学,2019,28(12):53-62.
APA	白梦杰,陶奇波,韩云华,&王彦荣.(2019).十种荒漠植物种子萌发对温度的响应.草业学报,28(12),53-62.
MLA	白梦杰,et al."十种荒漠植物种子萌发对温度的响应".草业学报 28.12(2019):53-62.