Fitness of hybrids between rapeseed (Brassica napus) and wild Brassica rapa in natural habitats

被引：54

作者：

Allainguillaume, J

Alexander, M

Bullock, JM

Saunders, M

Allender, CJ

King, G

Ford, CS

Wilkinson, MJ ^{[1
]}

机构：

[1] Univ Reading, Sch Biol Sci, Plant Sci Labs, Reading, Berks, England

[2] Winfrith Technol Ctr, Ctr Ecol & Hydrol, Dorchester DT2 8ZD, Dorset, England

[3] Warwick HRI, Wellesbourne CV35 9EF, Warwick, England

[4] Rothamsted Res, Harpenden, Herts, England

来源：

MOLECULAR ECOLOGY | 2006年 / 15卷 / 04期

基金：

英国生物技术与生命科学研究理事会; 英国自然环境研究理事会;

关键词：

Brassica napus; Brassica rapa; fitness; gene flow; genetically modified crops; wild relatives;

D O I：

10.1111/j.1365-294X.2006.02856.x

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Fitness of hybrids between genetically modified (GM) crops and wild relatives influences the likelihood of ecological harm. We measured fitness components in spontaneous (non-GM) rapeseed x Brassica rapa hybrids in natural populations. The F-1 hybrids yielded 46.9% seed output of B. rapa, were 16.9% as effective as males on B. rapa and exhibited increased self-pollination. Assuming 100% GM rapeseed cultivation, we conservatively predict < 7000 second-generation transgenic hybrids annually in the United Kingdom (i.e. similar to 20% of F-1 hybrids). Conversely, whilst reduced hybrid fitness improves feasibility of bio-containment, stage projection matrices suggests broad scope for some transgenes to offset this effect by enhancing fitness.

引用

页码：1175 / 1184

页数：10

共 26 条

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Bullock J. M., 1999, Aspects of Applied Biology, P205

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