Perennial aneuploidy as a potential material for gene introgression between maize and Zea perennis  

作　　者：FU Jie YANG Xiu-yan CHENG Ming-jun L Gui-hua WANG Pei WU Yuan-qi ZHENG Ming-min ZHOU Shu-feng RONG Ting-zhao TANG Qi-lin 

机构地区：[1]Maize Research Institute,Sichuan Agricultural University

出　　处：《Journal of Integrative Agriculture》2015年第5期839-846,共8页农业科学学报（英文版）

基　　金：supported by the Key Basic Research Program of China(973 Program,2014CB138705);the National Natural Science Foundation of China(31371640,31071432)

摘　　要：Hybridization,which allows for gene flow between crops,is difficult between maize and Zea perennis.In this study,we aim to initiate and study gene flow between maize and Z.perennis via a special aneuploid plant（MDT） derived from an interspecific hybrid of the two species.The chromosome constitution and morphological characters of MDT as well as certain backcross progenies were examined.Results from genomic in situ hybridization（GISH） indicate that aneuploid MDT consisted of nine maize chromosomes and 30 Z.perennis chromosomes.The backcross progenies of MDTxmaize displayed significant diversity of vegetative and ear morphology;several unusual plants with specific chromosome constitution were founded in its progenies.Some special perennial progeny with several maize chromosomes were obtained by backcrossing MDT with Z.perennis,and the first whole chromosome introgression from maize to Z.perennis was detected in this study.With this novel material and method,a number of maize-tetraploid teosinte addition or substitution lines can be generated for further study,which has great significance to maize and Z.perennis genetic research,especially for promoting introgression and transferring desirable traits.Hybridization,which allows for gene flow between crops,is difficult between maize and Zea perennis.In this study,we aim to initiate and study gene flow between maize and Z.perennis via a special aneuploid plant（MDT） derived from an interspecific hybrid of the two species.The chromosome constitution and morphological characters of MDT as well as certain backcross progenies were examined.Results from genomic in situ hybridization（GISH） indicate that aneuploid MDT consisted of nine maize chromosomes and 30 Z.perennis chromosomes.The backcross progenies of MDTxmaize displayed significant diversity of vegetative and ear morphology;several unusual plants with specific chromosome constitution were founded in its progenies.Some special perennial progeny with several maize chromosomes were obtained by backcrossing MDT with Z.perennis,and the first whole chromosome introgression from maize to Z.perennis was detected in this study.With this novel material and method,a number of maize-tetraploid teosinte addition or substitution lines can be generated for further study,which has great significance to maize and Z.perennis genetic research,especially for promoting introgression and transferring desirable traits.

关 键 词：chromosomes maize fertility pollen parental vegetative displayed tetraploid constitution sterility 

分 类 号：S513[农业科学—作物学]