干旱区生态环境知识资源中心(Arid): 不同黑麦品种(品系)对持续干旱胁迫的形态适应性研究

Arid

	不同黑麦品种(品系)对持续干旱胁迫的形态适应性研究
其他题名	Morphological Adaptability of Different Rye Varieties(Lines)to Persistent Drought Stress
	杨丹; 张舒芸; 田新会; 杜文华
来源期刊	草地学报
ISSN	1007-0435
出版年	2020
卷号	28 期号:1 页码:122-129
中文摘要	为筛选适应我国西北干旱半干旱区的抗旱黑麦(Secale cereale L.)种质,本研究采用两因素随机区组试验设计,以黑麦品系C15,C33,C39,Z7和Z27为试验材料,甘引1号黑麦品种(CK1)和黑饲麦品种(CK2)为对照,通过防雨棚遮雨法控制降雨,于三叶期测定上述材料在正常灌水和干旱胁迫第7d,14d,21d,35d,49d,63d的株高、分蘖数、叶片数、地上生物量和地下生物量。结果表明:随着胁迫天数增加,供试黑麦材料的平均相对分蘖数、地上生物量和地下生物量总体呈下降趋势,而相对株高和叶片数呈上升趋势。7份黑麦材料中,C15的平均相对分蘖数,地下生物量和地上生物量最大;C33的平均相对叶片数最多;CK2的平均相对株高最高。从黑麦材料与干旱胁迫天数间的交互作用来看,重度干旱胁迫(第63d)下各黑麦材料形态指标的相对值与轻度干旱(第7d)的相对值差异最明显。基于隶属函数的综合评价表明:供试黑麦材料抗旱性强弱依次为:C15>C33>CK1>CK2>C39> Z27>Z7,可见,C15属于强抗旱型,C33属于中抗旱型,CK1和CK2属于中间型,C39和Z27属于干旱较敏感型,Z7属于干旱敏感型。说明在干旱胁迫下,参试材料C15的抗旱性最强,可作为我国西北干旱半干旱区抗旱黑麦新品种选育和抗旱种质资源开发利用的基础材料。
英文摘要	In order to screen the drought-tolerant rye germplasm for arid and semi-arid regions of northwestern China,we conducted the two factors randomized block field experiment.Rye lines of C15,C33,C39,Z7 and Z27were used as the experimental materials,and rye varieties ofGanyin No.1and Black Feeding were used as the controls.During the experiment,the rainfall was controlled using the rain shelter.After these rye seedlings were at three-leaf stage,the plant height,the number of tillers and leaves,biomass of aboveground and underground were determined on day 7,14,21,35,49and 63under normal irrigation and drought stress.Results showed that with the increase of the drought stress days,averaged relative tiller number,aboveground biomass and underground biomass of rye materials decreased,but the averaged relative plant height and leaf number increased.Among the 7materials,the averaged relative tiller number,and biomass of underground and aboveground of C15were the highest,the averaged relative leaf number of C33 was the highest,and the averaged relative plant height of CK2was the highest,respectively.From the interaction of rye materials and drought stress days,the most significant difference was found between the relative values of morphological indexes of rye materials under severe drought(63d)and light drought(7 d),the subordinate function method was used to evaluate the drought tolerance of rye germplasm resources. The results showed that C15>C33>CK1>CK2>C39>Z27>Z7.Among which,C15belongs to the strong drought resistance type,C33belongs to the moderate drought resistance type,CK1and CK2belong to the intermediate type,C39and Z27belong to the moderately drought sensitive type,and Z7belongs to the drought sensitive type.It indicates that C15has the strongest drought resistance,and can be used as the basic material for breeding new drought-resistant rye varieties and developing drought-resistant germplasm resources in arid and semi-arid areas of northwest China.
中文关键词	黑麦 ; 形态指标 ; 抗旱性 ; 综合评价
英文关键词	Rye Morphological index Drought resistance Comprehensive evaluation
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6785063
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336795
作者单位	杨丹, 甘肃农业大学草业学院, 草业生态系统教育部重点实验室;;中-美草地畜牧业可持续研究中心, 兰州, 甘肃 730070, 中国.; 张舒芸, 甘肃农业大学草业学院, 草业生态系统教育部重点实验室;;中-美草地畜牧业可持续研究中心, 兰州, 甘肃 730070, 中国.; 田新会, 甘肃农业大学草业学院, 草业生态系统教育部重点实验室;;中-美草地畜牧业可持续研究中心, 兰州, 甘肃 730070, 中国.; 杜文华, 甘肃农业大学草业学院, 草业生态系统教育部重点实验室;;中-美草地畜牧业可持续研究中心, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	杨丹,张舒芸,田新会,等. 不同黑麦品种(品系)对持续干旱胁迫的形态适应性研究[J],2020,28(1):122-129.
APA	杨丹,张舒芸,田新会,&杜文华.(2020).不同黑麦品种(品系)对持续干旱胁迫的形态适应性研究.草地学报,28(1),122-129.
MLA	杨丹,et al."不同黑麦品种(品系)对持续干旱胁迫的形态适应性研究".草地学报 28.1(2020):122-129.