干旱区生态环境知识资源中心(Arid): 胡麻种质萌发期抗旱性综合评价

Arid

	胡麻种质萌发期抗旱性综合评价
其他题名	Comprehensive Valuation of Drought Resistance of Flax Germplasm in Germination
	张彦军; 苟作旺; 王兴荣; 陈伟英; 祁旭升
来源期刊	植物遗传资源学报
ISSN	1672-1810
出版年	2015
卷号	16 期号:3 页码:520-527
中文摘要	为研究不同类型胡麻种质萌发期抗旱性表现,以筛选抗旱品种,为抗旱育种提供科技支撑。本研究采用不同浓度的PEG-6000高渗溶液模拟干旱胁迫的方法,对定亚17、陇亚8号和2011621080进行渗透胁迫试验,筛选适宜浓度的PEG-6000溶液。对161份不同类型的胡麻种质在萌发期进行渗透胁迫试验,考查与抗旱性相关的5个性状,并运用单项抗旱系数、综合抗旱系数、隶属函数和灰色关联度相结合的方法对种质资源的抗旱性进行综合评价。结果表明,不同浓度PEG-6000胁迫对胡麻种质的萌发均有影响,当PEG-6000的浓度在18%时,各种指标的抑制作用均显著加强,因此本研究选用18%的PEG-6000浓度模拟干旱胁迫试验;PEG-6000胁迫降低了161份胡麻种质资源的相对发芽率,抑制了幼芽的生长,种质间表现出较大差异。根据抗旱性量度值将供试种质划为5级,其中1级抗旱型2份、2级15份、3级28份、4级82份、5级34份;供试种质的抗旱性强弱与地理来源息息相关。试验结果说明选择多个性状,综合评价胡麻萌发期抗旱性是可行且准确的。
英文摘要	To study drought resistance of different types of flax germplasm in germination,screening varieties with resistance to drought will give support in breeding. This paper studied stress test under different concentrations of PEG-6000 for Dingya 17,Longya 8 and 2011621080,to select the best concentration of PEG-6000 solution. For 161 varieties from northwest arid area were tested during germination, and meanwhile 5 characters which relevant to drought resistance were studied. Comprehensive evaluation was carried out for different germplasm resources through drought resistance coefficient,comprehensive drought resistance coefficient,membership function and grey relational analysis. The results showed that there was an influence on the germination of flax germplasm with the increased of PEG-6000 concentration,with 18% PEG-6000 stress condition for the flax germplasm of seed during germination among them,the relative germination rate,root length,root fresh weight,bud length,bud fresh weight of 161 flax germplasm decreased under PEG-6000 stress. According to drought resistance comprehensive evaluation value, flax germplasm used in this study were divided into 5 drought resistance grades, 2 belonged to grade 1,15 belonged to grade 2,28 belonged to grade 3, 82 belonged to grade 4,34 belonged to grade 5. The capacity of drought resistance of the tested cultivars was relevant to geographical origins. Using several relevant characters, it is an effective and accurate way to comprehensively evaluate the drought tolerance of flax in germination.
中文关键词	胡麻 ; 萌发期 ; 干旱胁迫 ; 抗旱性
英文关键词	flax germination drought stress drought resistance
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5425472
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233637
作者单位	甘肃省农业科学院作物研究所, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	张彦军,苟作旺,王兴荣,等. 胡麻种质萌发期抗旱性综合评价[J],2015,16(3):520-527.
APA	张彦军,苟作旺,王兴荣,陈伟英,&祁旭升.(2015).胡麻种质萌发期抗旱性综合评价.植物遗传资源学报,16(3),520-527.
MLA	张彦军,et al."胡麻种质萌发期抗旱性综合评价".植物遗传资源学报 16.3(2015):520-527.