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2. Introgression of Perennial Teosinte Genome into Maize and Identification of Genomic In Situ Hybridization and Microsatellite Markers

Author

Yubi Huang, Cao Moju, Guangtang Pan, Tingzhao Rong, Qilin Tang, Yun-Chun Song, Junpin Yang, and Wanchen Li

Subjects
Genetics, biology, medicine.diagnostic_test, Perennial plant, Chromosome, Introgression, biology.organism_classification, Genome, Zea perennis, Backcrossing, medicine, Microsatellite, Agronomy and Crop Science, Fluorescence in situ hybridization
Abstract

To transfer desirable characters from perennial teosinte [Zea perennis (Hitchc.) Reeves & Mangelsd.] into maize (Z. mays L.), we have generated an interspecific hybrid and its backcross generations (BC 1 F 3 ). The maize x perennial teosinte BC 1 F 3 (MZI202) resembled maize, with chromosome number 2n = 20. MZI202 was studied by multicolor genomic in situ hybridization (McGISH) and simple-sequence repeat (SSR) microsatellites markers. The McGISH experiments provided direct evidence that MZI202 was a maize-perennial teosinte substitution line with introgression of three alien chromosomes from perennial teosinte. The SSR assay further confirmed that a single chromosome 6 and the pair of chromosome 10 of maize were replaced by perennial teosinte chromosomes in MZI202.

Published
2005

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