小麦中国春背景下长穗偃麦草光合作用相关基因的染色体定位  

Chromosomal Location of the Genes Associated with Photosynthesis of Lophopyrum elongatum (Host) A.Lve in Chinese Spring Background

作　　者：彭远英[1] 彭正松[1] 宋会兴[2] 

机构地区：[1]西华师范大学生命科学学院,南充637002 [2]曲阜师范大学生命科学学院,曲阜273165

出　　处：《中国农业科学》2005年第11期2182-2188,共7页Scientia Agricultura Sinica

基　　金：教育部重点科研项目(03108);四川省应用基础项目(04JY029-055-1)资助

摘　　要：光合作用与小麦产量关系的研究倍受国内外学者关注,而以代换系为材料研究外源染色体对光合作用的效应至今未见报道。笔者以小麦-长穗偃麦草二体代换系为材料,以旗叶为主要测定叶位,用美国CID公司生产的CI-310便携式光合作用测定系统于田间测定旗叶光合速率在各生育期变化,并测定其与产量构成因素间的相关性。结果表明,DS2Ee(2A)代换系在开花期具有在整个生育期最高的光合速率,2Ee染色体可在穗粒数性状的改良过程中加以利用。DS4Ee(4A、4B、4D)代换系其旗叶从抽穗期到灌浆期始终保持较高水平净光合速率,对籽粒形成和充实十分有利,4Ee染色体可在通过改良灌浆时光合速率来提高千粒重等产量指标的研究中加以利用。Researches on the relationship between photosynthesis and wheat yield have attracted the attention of both domestic and overseas scholars. There is no report about the study on the effects of exogenous chromosomes on photosynthesis using the substitution series as materials. In this research, Triticum aestivum cv. Chinese Spring- Lophopyrum elongatum （Host） A.Love disomic substitutions series were used as materials and flag leaves as the measuring position. And the CI-310 Portable Photosynthesis System made by CID Co. in USA was used to measure the net rate of photosynthesis of flag leaves in different developing stages and the correlations between photosynthesis and yield. The result showed that the line of DS2Ee （2A） has the highest photosynthetic rate in the whole developing stage when it is in the anthesis, it can be used in improving process of the character of kernel number. The flag leaves of DS4E^e （4A, 4B, 4D） lines can remain certain high net photosynthetic rate from heading to grain filling stage. It can be used in research of promoting the yield index like 1000-grain weight through improving the photosynthetic rate at grain filling stage.

关 键 词：普通小麦 长穗偃麦草 代换系 光合作用 基因定位 

分 类 号：S512.1[农业科学—作物学] Q945.11[生物学—植物学]