Chinese Bulletin of Botany >

2010 , Vol. 45 >Issue 02: 162 - 173

DOI: https://doi.org/10.11983/CBB29194

Structural Characteristics and Subgroup of Rapeseed Gene-flow Network

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  • 1Central South University, Changsha 410083, China
    2South China University of Technology, Guangzhou 510006, China
    3Hunan Agriculture University, Changsha 410128, China

Received date: 2009-05-27

  Revised date: 2009-09-20

  Online published: 2010-03-01

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Abstract

To understand the gene-flow rules of transgenic rapeseed, we first constructed a rapeseed gene-flow topological graph and analyzed its structural characteristics on the basis of data of normal rapeseed hybridization with Cruciferae. The node degree of the network follows the power-law distribution and has scale-free properties. Then, using the 2 indices of standard structure entropy and network efficiency, we analyzed the network robustness according to random attacks and intentional attacks. The gene-flow network is robust against random failures of nodes but fragile to intentional attacks with removal of no more than 10% nodes. Finally, we analyzed the subgroup and structural position by the UCINET software and found 298 nodes, namely 22 kinds of Cruciferae plants, divided into 2 subgroups and 5 structural positions; Brassica napus played a key role in subgroups and structural position. These results provide a new approach for transgenic rapeseed gene-flow research and gives some references for reasonable cultivation measures of transgenic rapeseed.

Key words： gene-flow network; scale-free model

Cite this article

Huimin Liao, Chao Wu, Yicheng Cao, Qiang Gao, Guohuai Wang . Structural Characteristics and Subgroup of Rapeseed Gene-flow Network[J]. Chinese Bulletin of Botany, 2010 , 45(02) : 162 -173 . DOI: 10.11983/CBB29194

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