The effect of colchicine on phenotypic classes ratio of the enzyme locus controlling alcohol dehydrogenase (ADH1) in sugar beet agamospermous progenies was analysed. The obtained data are indicative of the thing that ...The effect of colchicine on phenotypic classes ratio of the enzyme locus controlling alcohol dehydrogenase (ADH1) in sugar beet agamospermous progenies was analysed. The obtained data are indicative of the thing that colchicine causes polytenization of homological chromosome regions carrying marker locus Adh1 alleles. Theoretical calculation of the formation of egg cells frequencies and those of further development of cells entering embryogenesis without fertilization, also the diminution calculation of excessive chromosome regions carrying marker locus alleles have been made. The coincidence of theoretical and experimental ratios of phenotypic classes indicates the existence of post-meiotic apozygotic combinatory process in plants.展开更多
以耐淹性不同的周麦22(ZM22,不耐淹品种)和百农607(BN607,耐淹品种)为试材,采用盆栽方式,研究淹水处理对两种小麦叶片叶绿素含量、各部位(小麦根系、老叶、旗叶、籽粒)糖分含量和乙醇脱氢酶活性的影响.结果表明:开花期淹水处理后,ZM22...以耐淹性不同的周麦22(ZM22,不耐淹品种)和百农607(BN607,耐淹品种)为试材,采用盆栽方式,研究淹水处理对两种小麦叶片叶绿素含量、各部位(小麦根系、老叶、旗叶、籽粒)糖分含量和乙醇脱氢酶活性的影响.结果表明:开花期淹水处理后,ZM22老叶中叶绿素a、叶绿素b和叶绿素总含量都显著下降,而BN607相应各指标的叶绿素含量都上升.淹水处理后BN607根系蔗糖含量上升的幅度远高于ZM22,而ZM22根系中总糖含量显著降低.与对照相比,淹水处理后BN607旗叶中总糖含量显著增加,而老叶中总糖含量显著降低;淹水处理后7 d ZM22旗叶中总糖含量显著降低,而老叶总糖含量与对照差异不显著.在老叶和旗叶中,淹水处理3 d和7 d后造成ZM22的ADH酶活性显著降低,而BN607的ADH酶活性显著上升.整体来看,BN607对淹水的适应能力要强于ZM22.展开更多
文摘The effect of colchicine on phenotypic classes ratio of the enzyme locus controlling alcohol dehydrogenase (ADH1) in sugar beet agamospermous progenies was analysed. The obtained data are indicative of the thing that colchicine causes polytenization of homological chromosome regions carrying marker locus Adh1 alleles. Theoretical calculation of the formation of egg cells frequencies and those of further development of cells entering embryogenesis without fertilization, also the diminution calculation of excessive chromosome regions carrying marker locus alleles have been made. The coincidence of theoretical and experimental ratios of phenotypic classes indicates the existence of post-meiotic apozygotic combinatory process in plants.
文摘以耐淹性不同的周麦22(ZM22,不耐淹品种)和百农607(BN607,耐淹品种)为试材,采用盆栽方式,研究淹水处理对两种小麦叶片叶绿素含量、各部位(小麦根系、老叶、旗叶、籽粒)糖分含量和乙醇脱氢酶活性的影响.结果表明:开花期淹水处理后,ZM22老叶中叶绿素a、叶绿素b和叶绿素总含量都显著下降,而BN607相应各指标的叶绿素含量都上升.淹水处理后BN607根系蔗糖含量上升的幅度远高于ZM22,而ZM22根系中总糖含量显著降低.与对照相比,淹水处理后BN607旗叶中总糖含量显著增加,而老叶中总糖含量显著降低;淹水处理后7 d ZM22旗叶中总糖含量显著降低,而老叶总糖含量与对照差异不显著.在老叶和旗叶中,淹水处理3 d和7 d后造成ZM22的ADH酶活性显著降低,而BN607的ADH酶活性显著上升.整体来看,BN607对淹水的适应能力要强于ZM22.