干旱区生态环境知识资源中心(Arid): 丹红杨*通辽1号杨杂交子代苗期抗旱性初步评价

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	*丹红杨通辽1号杨杂交子代苗期抗旱性初步评价**
其他题名	Preliminary Evaluation of Drought Resistance for Populus deltoides Danhong*P.simoniiTongliao1Hybrid Progenies at the Seedling Stage
	孙佩; 姬慧娟; 张亚红; 贾会霞; 胡建军
来源期刊	植物遗传资源学报
ISSN	1672-1810
出版年	2019
卷号	20 期号:2 页码:297-308
中文摘要	杨树是重要的用材林和防护林树种,土壤干旱不仅影响杨树正常生长发育,甚至降低木材产量与品质。评价杨树全同胞家系抗旱性,筛选抗旱指标,对培育抗旱新品种、干旱土地的利用及生态环境建设具有重要意义。本研究以123个丹红杨*通辽1号杨杂交子代无性系为材料,采用盆栽控水试验,在中度干旱胁迫下,测定植株的生长、光合、叶形和水分生理等12个指标;建立田间试验林,测定一年生田间生长量。结果表明,干旱胁迫对杂交子代各指标均有极显著影响(P<0.01),其中气孔导度(G_a)变异系数最大。相关性分析发现,各抗旱性状之间呈现不同程度的相关性。利用主成分分析法和隶属函数法进行苗期抗旱性综合评价,将杂交群体划分为干旱敏感型、中等抗旱型和高抗旱型3种类型,分别包含30个、73个和22个无性系,DX-27、DX-4、DX-3等10个无性系抗旱性强于父本通辽1号杨,其中无性系DX-55和DX-81抗旱性D值(均为0.60)最大,抗旱能力最强。逐步线性回归分析和相关性分析表明基径(D)、净光合速率(P_n)、气孔导度(G_a)和蒸腾速率(T_r)对抗旱性影响显著,可作为苗期抗旱性评价指标,其中G_a对抗旱性直接效应最大。采用布雷金多性状综合评价法对杂交子代田间生长性状综合评价,将杂交群体划分为4级,亲本丹红杨和通辽1号杨分别隶属优级和差级,6个抗旱性强于父本通辽1号杨的无性系(DX-76、DX-78、DX-53、DX-55、DX-3、DX-20)隶属优级和良级,初步筛选为抗旱速生材料。本研究为杨树抗旱遗传改良及苗期抗旱性鉴定提供理论依据。
英文摘要	Poplar is an important timber and shelterbelt tree species.The soil drought severely limits its growth,development and quality.Deciphering the theory and production for drought resistance is of interest on the poplar varieties cultivation,arid land use,and ecological environment construction to evaluate poplar full sib family drought resistance and select drought index.In this study,123 progenies derived from a cross of Populus deltoidesDanhong*P.simonii Tongliao1 were subjected for moderate pot water control experiment via determining 12 growth parameters such as photosynthesis,leaf and water indexes.In addition,we established field experimental forest and measured one year growth increment.The results showed that the drought stress had a significant effect on all the tested traits of hybrid progeny(P <0.01),among which stomatal conductance(G_a)had the largest variation coefficient.Correlation analysis indicated that responsive traits exhibited different degrees of correlation.Drought resistances of the progenies at seedling stage were evaluated with principle component analysis and subordinate function.The hybrid population were classified into three types as drought sensitive type,moderate drought resistance type and high drought resistance type with each contained 30,73,and 22 individuals.DX-27,DX-4,DX-3 and other seven lines adopt to drought better than male parent P.simoniiTongliao1.Line DX-55 and DX-81 got the maximum drought resistance D value (all 0.60),and showed the strongest drought resistance.Stepwise linear regression and correlation analysis indicated diameter (D),net photosynthesis (P_n),stomatal conductance (G_a)and transpiration rate (T_r)could be used as drought resistance indexes,of which G_a had the largest direct effect on drought resistance.The comprehensive evaluation was used to analyze field growth characters,and the progenies were divided into four classes.P.deltoides Danhong and P.simonii Tongliao1 belong to the first and fourth class,respectively.Six lines(DX-76,DX-78,DX-53,DX-55,DX-3,DX-20)with better drought resistance ability than male parent P.simonii Tongliao1 belong to the first and second class,and preliminarily selected as drought-resistant and fast-growing materials.Thus,this study provides theoretical basis in breeding for drought resistance in poplar and test for drought resistance at the seedlingstage.
中文关键词	杂交子代 ; 抗旱性 ; 抗旱指标 ; 综合评价
英文关键词	hybrid progeny drought resistance drought resistance index comprehensive evaluation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6459191
来源机构	中国林业科学研究院林业研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239711
作者单位	中国林业科学研究院林业研究所, 林木遗传育种国家重点实验室;;国家林业局林木培育重点实验室, 北京 100091, 中国
推荐引用方式 GB/T 7714	孙佩,姬慧娟,张亚红,等. 丹红杨*通辽1号杨杂交子代苗期抗旱性初步评价[J]. 中国林业科学研究院林业研究所,2019,20(2):297-308.
APA	孙佩,姬慧娟,张亚红,贾会霞,&胡建军.(2019).丹红杨*通辽1号杨杂交子代苗期抗旱性初步评价.植物遗传资源学报,20(2),297-308.
MLA	孙佩,et al."丹红杨*通辽1号杨杂交子代苗期抗旱性初步评价".植物遗传资源学报 20.2(2019):297-308.