小麦-簇毛麦6VS/6AL易位染色体对小麦农艺性状的影响  

Effects of the 6VS/6AL Translocation Chromosome on Agronomic Characteristics of Wheat

作　　者：李桂萍[1,2] 陈佩度[1] 张守忠[1] 赵和[3] 

机构地区：[1]南京农业大学细胞遗传研究所/作物遗传与种质创新国家重点实验室,南京210095 [2]淮北师范大学生命科学学院/资源植物学安徽省重点实验室,淮北235000 [3]河北省农林科学院遗传生理研究所,石家庄050051

出　　处：《植物遗传资源学报》2011年第5期744-749,共6页Journal of Plant Genetic Resources

基　　金：国家自然科学基金(30471080);国家重点基础研究发展计划(973计划)项目(2009CB118300)

摘　　要：利用3类试验材料,即由不同生态类型的推广品种与小麦-簇毛麦6VS/6AL易位系经过杂交回交选育的高代品系(种),3份涉及6VS/6AL的高代分离品系以及5个以小麦-簇毛麦6VS/6AL易位系作杂交亲本的F2群体,对含有与不含有6VS/6AL易位染色体材料的产量、株高、穗长、穗粒数、穗粒重和千粒重等农艺性状进行方差分析。结果表明,6VS/6AL易位染色体对后代的小穗数、穗粒数、穗粒重和产量等农艺性状没有表现出明显的影响,对穗长和千粒重表现出一定的正向效应。多数6VS/6AL衍生品系的株高与亲本相比有所增加,但在同一组合的不同品系之间表现出一定的差异,在育种过程中通过选择可改变增高趋势。6VS/6AL易位系对白粉病免疫,并且遗传稳定,对小麦的抗病育种是很有潜力的抗源亲本。Three types of materials were selected including derived advanced lines carrying 6VS/6AL translocation chromosome and their respective parents, three segregation advanced lines and five F2 population derived from wheat-H, villosa 6VS/6AL transloeation line. The F-test of their agronomic characteristics were done using the SAS8.2 System. The results showed that there were no significant differences between 6VS/6AL lines and their recurrent parents in agronomic traits, including grain yield, spikelets, grains/spike and grain weight/spike. 6VS/ 6AL lines showed slightly but significantly higher 1000-grain weight and spike length. Most 6VS/6AL derivatives showed higher plant height than their control parents. However, significant variation occurred for this trait among sister lines from the same cross, indicating that additional selection could lead to further improvements. It was coneluded that the 6VS/6AL translocation can be used in wheat breeding programs as a donor of resistance to powdery mildew with no obvious undesirable effects on agronomic characteristics.

关 键 词：6VS/6AL易位系 普通小麦 农艺性状 影响 

分 类 号：S512.1[农业科学—作物学]