Production of Partial New-typed Brassica Napus by Introgression of Genomic Components from B. rapa and B. carinata

Maoteng Li; Jianmin Liu; Yanting Wang; Longjiang Yu; Jinling Meng

doi:10.1016/S1673-8527(07)60050-2

Volume 34 Issue 5

May 2007

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Article Navigation > Journal of Genetics and Genomics > 2007 > 34(5): 460-468

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Production of Partial New-typed Brassica Napus by Introgression of Genomic Components from B. rapa and B. carinata

doi: 10.1016/S1673-8527(07)60050-2

a
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
b
College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China

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Corresponding author: E-mail address: limaoteng426@163.com (Maoteng Li); E-mail address: jmeng@mail.hzau.edu.cn (Jinling Meng)
Received Date: 2006-09-01
Accepted Date: 2006-11-27

Available Online: 2007-06-07

Publish Date: 2007-05-20

Abstract

Abstract

A breeding strategy for widening the germplasm of Brassica napus was proposed by introgression of the A^r subgenome of B. rapa (A^rA^r) and C^c of B. carinata (B^cB^cC^cC^c) into natural B. napus (AⁿAⁿCⁿCⁿ). The progenies with 38 chromosomes that were derived from the self-pollinated seeds of pentaploid hybrids (A^rAⁿB^cC^cCⁿ) were used for further research. Some of the partial new-typed B. napus showed normal meiotic behavior, high portion of germinated pollen and normal embryological development. This indicates that the selected new-typedB. napus had a balanced genetic base. Molecular analysis showed that about 50% of the genome in the new-typed B. napus was replaced by A^r and C^c subgenome from B. rapa and B. carinata. Considering the genetic diversity among different lines of new-typed B. napus it was deduced that the introgression of the genomic components from B. rapa and B. carinata could widen the genetic diversity of rapeseed.
- pollen germination,
- embryo sac development,
- genome introgression,
- genetic distance

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References(34)

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