小麦抗条锈新种质的创制 Ⅱ.六倍体小黑麦与普通小麦杂交的细胞遗传学研究  

Development of new wheat germplasm with strip rust resisitance Ⅱ.Cytogenetic observation in hexaploid Triticale and common wheat F_1 hybrid

作　　者：陈耀锋[1] 宋运贤[1] 亢福仁[2] 李春莲[1] 郭东伟[1] 李振岐[3] 韩德俊[1] 任惠莉[1] 

机构地区：[1]西北农林科技大学农学院 [2]榆林学院 [3]西北农林科技大学植保学院

出　　处：《西北农林科技大学学报（自然科学版）》2003年第5期1-4,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家973项目(G2000016202);陕西省科技攻关项目(2002K01-G01-4)

摘　　要：　利用细胞遗传学方法研究了普通小麦和六倍体小黑麦正、反交F1减数分裂中期 染色体配对行为。结果表明,六倍体小黑麦×普通小麦与普通小麦×六倍体小黑麦2种杂交方式杂种,F1减数分裂染色体配对行为与理论值有一定的差异,前者单价体数目多于理论值,后者则少于理论值,但二价体数目两者都少于理论值。同时后者多价体和环状二价体的数目要高于前者。另外,2种杂交方式均出现了一定数量染色体配对异常情况。Cytogenetic observation was conducted at PMC MⅠ in F1 hybrid of hexaploid Triticale and common wheat.The result showed that the number of univalent at F1 PMC was larger than theoretical value in hexaploid Triticale×common wheat but was smaller than theoretical value in common wheat ×hexaploid Triticale.The number of divalent at F1 PMC was smaller than theroretical value in both of them.The number of multivalent and rod divalent at F1 PMC of common wheat ×hexapoid Triticale were larger than that of hexapoid Triticale ×common wheat.Abnormal chromosome pairing was also observed at PMC MⅠ in F1 hybrid.

关 键 词：小麦 抗条锈病品种 种质资源 六倍体小黑麦 杂交 细胞遗传学 

分 类 号：S512.1[农业科学—作物学]