Fitness of backcross six of hybrids between transgenic oilseed rape (<i>Brassica napus</i>) and wild radish (<i>Raphanus raphanistrum</i>)

Gueritaine, Gaëlle; Sester, Mathilde; Eber, Frédérique; Chèvre, Anne‐Marie; Darmency, Henri

doi:10.1046/j.1365-294x.2002.01540.x

Cited by 69 publications

(59 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…f In this study, the effect of competition was confounded with the effect of site since competition was imposed in the field while the without competition study was performed in a glasshouse. References: 1 Snow et al (1998), 2 Massinga et al (2005), 3 Mercer et al (2006), 4 van Gaal et al (1998, 5 Guéritaine et al (2002), 6 Pertl et al (2002), 7 Guéritaine et al (2003), 8 Hauser et al (2003), 9 Vacher et al (2004), 10 Halfhill et al (2005) under increasingly competitive conditions, the difference between hybrid and wild genotypes is often reduced by competition Uthus, 2001;Guéritaine et al, 2002;Halfhill et al, 2005;Mercer, 2005). However, in this collection of studies, imposing competition on hybrid plants rarely, if ever, reversed the relative performance of hybrids compared with their wild relative (Table 3).…”

Section: Discussionmentioning

confidence: 99%

Competition alters life history and increases the relative fecundity of crop–wild radish hybrids (Raphanusspp.)

2006

View full text Add to dashboard Cite

Summary• The evolutionary impact of crop-to-wild gene flow depends on the fitness of hybrids under natural, competitive conditions. Here, we measured the performance of third-generation (F 3 ) radish hybrids ( Raphanus raphanistrum × Raphanus sativus ) and weedy R. raphanistrum to understand how competitive interactions affect life history and relative fecundity.• Three wild and three F 1 crop-wild hybrid radish populations were established in semi-natural, agricultural conditions in Michigan, USA. The effects of competition on life-history traits and fecundity of F 3 progeny were measured 2 yr later in a common garden experiment.• Third-generation hybrid plants generally produced fewer seeds per fruit and set fewer fruits per flower than wild plants, resulting in lower lifetime fecundity. With increasing competition, age at reproduction was delayed, the relative number of seeds per fruit was reduced in wild plants and differences between hybrid and wild fecundity diminished.• Competition may enhance the fecundity of advanced-generation hybrids relative to wild plants by reducing differences in life history, potentially promoting the introgression of crop alleles into weed populations.

show abstract

Section: Discussionmentioning

confidence: 99%

Competition alters life history and increases the relative fecundity of crop–wild radish hybrids (Raphanusspp.)

2006

View full text Add to dashboard Cite

show abstract

“…Cheng et al (2002) Bn)Raphanus raphanistrum L. (n09) Eber et al (1994), Baranger et al (1995), Chadoeuf et al (1998), Che`vre et al (1998a, Darmency et al (1998), Lefol et al (1997), Rieger et al (2001), Gue´ritaine et al (2003a, b), Che`vre et al (2003Che`vre et al ( , 2007 [Bn)Raphanus raphanistrum F 1 ] R. raphanistrum Che`vre et al (1997Che`vre et al ( , 1998a Bn)Raphanus sativus L. (n09) Gupta ( (1991, 1996b), Alam et al (1992), Sharma and Singh (1992), Vijayakumar et al (1994), Frello et al (1995), Rao and Shivanna (1997), Gupta (1997), Sandhu and Gupta (2000), Choudhary and Joshi (2001a) et al (1985), Ringdahl et al (1987), Salisbury (1989), Gupta (1997) Diplotaxis siifolia Kunze (n010))Bn Gupta (1997) Hirschfeldia incana)Bn Lefol et al (1996b), Darmency and Fleury (2000) Raphanus raphanistrum)Bn Eber et al (1994), Baranger et al (1995), Darmency et al (1998), Che`vre et al (1997, 1998a, 2000, Gue´ritaine and Darmency (2001), Rieger et al (2001), Gue´ritaine et al (2002Gue´ritaine et al ( , 2003a Leckie et al (1993): Jorgensen and Andersen (1994), Bin...…”

Section: Female Parent)male Parent Citationmentioning

confidence: 99%

The Biology of Canadian Weeds. 137. Brassica napus L. and B. rapa L.

Gulden¹,

Warwick²,

Thomas³

2008

Can. J. Plant Sci.

View full text Add to dashboard Cite

. 2008. The Biology of Canadian Weeds. 137. Brassica napus L. and B. rapa. Can. J. Plan Sci. 88: 951Á996. Brassica napus and B. rapa are native to Eurasia. In Canada, these species are commonly referred to as volunteer canola, while feral populations of B. rapa are referred to as birdrape. Brassica napus and B. rapa have been grown commercially for their seed oil content in western Canada since the middle of the last century and volunteer populations are common in fields. Escaped populations of both species are also found along roadways, railways and in waste areas; however, only B. rapa is known to have naturalized, self-sustaining feral populations in these habitats in eastern Canada. Despite these escaped and feral populations, B. napus and B. rapa are mainly a concern in agricultural fields where their combined relative abundance has increased over the past few decades. In the mid 1990s, herbicideresistant genotypes of B. napus were released for commercial production. Herbicide-resistance and the stacking of genes in volunteer populations conferring resistance to multiple herbicides have contributed to increased difficulties in controlling volunteer B. napus in some crops. However, yield loss resulting from volunteer populations is not well documented in Canada.Key words: Brassica napus, Brassica rapa, herbicide resistance, transgene escape, volunteer canola, weed biology Gulden, R. H., Warwick, S. I. et Thomas, A. G. 2008. La biologie des mauvaises herbes au Canada. 137. Brassica napus L. et B. rapa L. Can. J. Plant Sci. 88: 951Á996. Brassica napus et B. rapa sont des plantes originaires d'Eurasie. Au Canada, on les de´signe souvent sous l'expression « canola spontane´», tandis que les peuplements sauvages de B. rapa sont appele´s « navette ». Dans l'Ouest canadien, Brassica napus et B. rapa sont cultive´s commercialement pour l'huile que renferment leurs graines depuis le milieu du sie`cle dernier et les repousses spontane´es sont devenues monnaie courante dans les champs. On observe des peuplements des deux espe`ces le long des routes et des voies ferre´es ainsi que dans les terrains vagues, cependant on sait que seule B. rapa s'est acclimate´e pour donner des populations sauvages et stables dans les meˆmes habitats, dans l'est du pays. Malgre´cela, B. napus et B. rapa demeurent surtout pre´occupants dans les cultures, oul eur abondance relative, une fois combine´s, s'est accrue au cours des dernie`res de´cennies. Au milieu des anne´e 1990, des ge´notypes de B. napus re´sistants aux herbicides ont e´te´homologue´s pour la culture commerciale. Cette re´sistance et l'accumulation des ge`nes qui la codent dans les peuplements spontane´s ont concouru a`compliquer la lutte contre les repousses de B. napus dans certaines cultures. Quoi qu'il en soit, les pertes de rendement qui en re´sultent sont mal e´taye´es au Canada.

show abstract

“…During successive generations of backcrossing, fertility recovered but the percentage of HT plants decreased indicating that the transgene had not been introgressed into the R. raphanistrum genome. Cytoplasmic incompatibility markedly reduced the vigor and viability of BC 5 and BC 6 (Chèvre et al, 1998;Guéritaine et al, 2002).…”

Section: Hybridization and Introgression With Wild Relativesmentioning

confidence: 99%

Management of herbicide-tolerant oilseed rape in Europe: a case study on minimizing vertical gene flow

Devos

Reheul

Schrijver

et al. 2004

Environ. Biosafety Res.

View full text Add to dashboard Cite

The potential commercialization of genetically modified herbicide-tolerant (GMHT) oilseed rape in Europe raises various concerns about their potential environmental and agronomic impacts, especially those associated with the escape of transgenes. Pollen of oilseed rape can be dispersed in space, resulting in the fertilization of sympatric compatible wild relatives (e.g. Brassica rapa) and oilseed rape cultivars grown nearby (GM and/or non-GM Brassica napus). The spatial and temporal dispersal of seeds of oilseed rape may lead to feral oilseed rape populations outside the cropped areas and oilseed rape volunteers in subsequent crops in the rotation. The incorporation of a HT trait(s) may increase the fitness of the recipient plants, making them more abundant and persistent, and may result in weeds that are difficult to control by the herbicide(s) to which they are tolerant. Vertical gene flow from transgenic oilseed rape to non-GM counterparts may also have an impact on farming and supply chain management, depending on labelling thresholds for the adventitious presence of GM material in non-GM products. Given the extent of pollen and seed dispersal in oilseed rape, it is obvious that the safe and sound integration of GMHT oilseed rape in Europe may require significant on-farm and off-farm management efforts. Crucial practical measures that can reduce vertical gene flow include (1) isolating seed production of Brassica napus, (2) the use of certified seed, (3) isolating fields of GM oilseed rape, (4) harvesting at the correct crop development stage with properly adjusted combine settings, (5) ensuring maximum germination of shed seeds after harvest, (6) controlling volunteers in subsequent crops, and (7) keeping on-farm records. The implementation of the recommended practices may, however, be difficult, entailing various challenges.

show abstract

Fitness of backcross six of hybrids between transgenic oilseed rape (Brassica napus) and wild radish (Raphanus raphanistrum)

Cited by 69 publications

References 33 publications

Competition alters life history and increases the relative fecundity of crop–wild radish hybrids (Raphanusspp.)

Competition alters life history and increases the relative fecundity of crop–wild radish hybrids (Raphanusspp.)

The Biology of Canadian Weeds. 137. Brassica napus L. and B. rapa L.

Management of herbicide-tolerant oilseed rape in Europe: a case study on minimizing vertical gene flow

Contact Info

Product

Resources

About