当前位置: 首页 > 文章 > Perennial aneuploidy as a potential material for gene introgression between maize and Zea perennis 农业科学学报 (英文) 2015,14 (5)
Position: Home > Articles > Perennial aneuploidy as a potential material for gene introgression between maize and Zea perennis Journal of Integrative Agriculture 2015,14 (5)

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

作  者:
Fu Jie;Yang Xiu-yan;Cheng Ming-jun;Lu Gui-hua;Wang Pei;Wu Yuan-qi;Zheng Ming-min;Zhou Shu-feng;Rong Ting-zhao;Tang Qi-lin
单  位:
Sichuan Agr Univ, Maize Res Inst, Chengdu 611130, Peoples R China
关键词:
maize;Z. perennis;gene flow;aneuploidy;chromosome constitution
摘  要:
Hybridization, which allows for gene flow between crops, is difficult between maize and Z. 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 Zea 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 Zea perennis, and the first whole chromosome introgression from maize to Zea 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 Zea perennis genetic research, especially for promoting introgression and transferring desirable traits.

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