In this paper,we consider the initial boundary value problem of a coupled compressible Navier-Stokes/Allen-Cahn system which is described the motion of a mixtur
The species composition,biomass,abundance,and species diversity of zooplankton were determined for samples collected from August 2002 to May 2003 from 14 statio
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Maintenance of ecosystem health is the primary focus of a sound ecological restoration.Yet methods involved in quantifying and assessing the health level remain
随着全球气候变暖,温室效应日益严重。气温升高对农业生产造成了极大的冲击,并且夜温的升高速度要比白天快。温度升高使作物在整个生长过程中遭遇高温胁迫的概率增加,而水稻在生长的任何时期遭遇高于其生长临界高温的温度时,都会对其生长发育不利。长江中下游作为我国粮食的主产区,以种植早、晚双季稻和一季中稻为主,在水稻的生长关键期遭遇极端的高温可能性越来越高,会造成粮食减产,甚至绝收。尤其对于中稻而言,其生育期较
本研究利用小麦品种中国春(Chinese Spring, CS)与小麦D基因组供体粗山羊草(Aegilops tauschii)TA2424杂交,杂交后取其幼胚进行组织培养得到杂种F1代,F1再用中国春连续回交两代,回交后代自交四代得到2000多份BC2F4后代群体家系。通过检测杂交后代群体中粗山羊草的染色体片段导入情况,构建一套普通小麦中国春—粗山羊草染色体片段导入系(CSSLs)。选取小麦D基
本实验室以欧洲甘蓝型油菜冬性品种Tapidor和中国半冬性栽培种宁油7号为亲本,构建TN DH群体,包含202个株系；并以该群体为母本,Ningyou7为父本,经过4次回交构建了导入系群体,称之为T-BC4群体。本研究目的为构建甘蓝型油菜双向导入系,因此以Tapidor为父本,构建了世代平衡的回交导入系群体,称之为N-BC4群体。同时,对双导入系群体进行了初步评估,并利用N-BC4群体对A9硫甙性