干旱区生态环境知识资源中心(Arid): Caryopsis Dormancy Patterns of Wild Barley(Hordeum spontaneum)and Its Association with Agronomic Traits and Ecogeographical Parameters

Arid

	Caryopsis Dormancy Patterns of Wild Barley(Hordeum spontaneum)and Its Association with Agronomic Traits and Ecogeographical Parameters
其他题名	野生二棱大麦种子休眠型态与农艺性状及生态地理因素相关性研究
	Yan J(严俊); Wang Y(王莹); NEVO Eviatar; GUTTERMAN Yitzchak; Cheng JP(程剑平)
来源期刊	Plant Science Journal
ISSN	2095-0837
出版年	2011
卷号	29 期号:3 页码:352-361
中文摘要	对来自以色列不同地区16个生态型野生二棱大麦种子的休眠型态与其农艺性状及起源地生态地里因素的相关性进行了研究。结果表明:高温(40℃)储藏可以打破种子的休眠;16个生态型种子在高温处理下的萌发率表现出显著差异，其休眠打破过程显示出不同型态的对数生长曲线:8个旱生生态型为S型，而8个湿生生态型为倒L型。休眠深度用实际达到最大萌发率的时间度量，最低休眠深度(15.6 d)是来自湿润地区进化峡谷的生态型37-N，而最深休眠深度(103.1 d)是来自干旱地区Ein-Zukim(死海附近)的生态型32-6。此外，对11个物候及农艺性状指标与休眠深度做斯皮尔曼秩相关分析，结果有9个显示出显著相关，尤其是粒重与休眠深度有极显著相关性。同时，休眠深度与起源地15个生态地理因素中的9个有显著相关，种子休眠主要受其起源地的地理位置、温度和水分条件等影响。可见，野生二棱大麦自然选择进化了休眠特性去应对干热环境而繁衍生息。本研究结果可用于进一步遗传研究和现代栽培大麦品种的改良。
英文摘要	Patterns in caryopsis dormancy and its agronomic and ecogeographical associations were investigated in 16 wild barley(Hordeum spontaneum)ecotypes from different habitats in Israel．The results showed that heat treatment(40℃)could break dormancy of caryopses． Germination percentages under breaking dormancy treatments were significantly different among the 16 ecotypes．Dormancy-break patterns were fitted by logistic growth curves:all eight xeric ecotypes showed an S-shaped curve，whereas all eight mesic ecotypes displayed a reverse L-shaped curve．For depth of dormancy，as reflected by the time to maximum germination percentage，the lowest(15.6 days)was for the ecotype 37-N from the north slop of Evolution Canyon(mesic)，whereas it was the highest(103．1 days)for 32-6 from Ein-Zukim(near Dead Sea)(xeric)．In addition，nine of 11 Spearmans Rho Correlations between dormancy depth and agronomic traits of 16 H．spontaneum ecotypes were significant．Dormancy depth showed closest correlation with kernel weight．Nine of 15 correlations between dormancy depth and ecogeographical factors were significant．Caryopses dormancy was mainly influenced by their original location，as well as temperature and local water conditions．Therefore，natural selection adapted wild barley to a dry and warm environment by increasing dormancy．The results of dormancy in wild barley will be subjected to genetic analyses and should be helpful for improving modern barley cultivars．
中文关键词	休眠深度 ; 萌发率 ; 生长曲线 ; 野生二棱大麦
英文关键词	Dormancy depth Germination percentage Growth curve Hordeum spontaneum
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:4265289
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378706
作者单位	严俊, 贵州大学麦作研究中心, 贵阳, 贵州 550025, 中国.; 程剑平, 贵州大学麦作研究中心, 贵阳, 贵州 550025, 中国.; 王莹, 本-古里安大学艾伯特·卡兹国际沙漠学院, 思德博克, 84990, 以色列.
推荐引用方式 GB/T 7714	Yan J,Wang Y,NEVO Eviatar,et al. Caryopsis Dormancy Patterns of Wild Barley(Hordeum spontaneum)and Its Association with Agronomic Traits and Ecogeographical Parameters[J],2011,29(3):352-361.
APA	严俊,王莹,NEVO Eviatar,GUTTERMAN Yitzchak,&程剑平.(2011).Caryopsis Dormancy Patterns of Wild Barley(Hordeum spontaneum)and Its Association with Agronomic Traits and Ecogeographical Parameters.Plant Science Journal,29(3),352-361.
MLA	严俊,et al."Caryopsis Dormancy Patterns of Wild Barley(Hordeum spontaneum)and Its Association with Agronomic Traits and Ecogeographical Parameters".Plant Science Journal 29.3(2011):352-361.