Molecular marker-based identification of oilseed rape volunteers with different secondary dormancy levels in oilseed rape fields

Thöle, Heinrich; Dietz‐Pfeilstetter, Antje

doi:10.1016/j.eja.2012.07.003

Cited by 9 publications

(10 citation statements)

References 20 publications

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“…Altogether, more than 100 farmers’ fields in northern and eastern Germany planted with OSR in the years 2009/2010 or 2010/2011 were surveyed for OSR volunteers using one of three methods: identification of volunteers (i) in sowing gaps in autumn 2009 and 2010, respectively (Thöle & Dietz‐Pfeilstetter, ), (ii) as distinctly longer plants in a semidwarf OSR crop in spring 2010 (Thöle & Dietz‐Pfeilstetter, ) and (iii) between wide rows in autumn 2010 (Thöle & Dietz‐Pfeilstetter, ). The main precondition for the choice of fields was a history of OSR cultivation between 1997 and 2009.…”

Section: Methodsmentioning

confidence: 99%

“…Nonetheless, 50% of the variation in volunteer abundance is comprised of factors for seed survival, such as dormancy level of the genotype, seed rain by harvest loss or soil tillage. Not all of these factors could be specified due to the diversity of OSR cropping histories (Thöle et al ., ; Thöle & Dietz‐Pfeilstetter, ), but volunteers could be assigned to cultivars grown in previous years (Thöle & Dietz‐Pfeilstetter, ,b). Results of the molecular marker‐based identification indicated that seeds of cultivars with high dormancy (HD) tended to persist in the soil to a larger extent than seeds of low‐dormancy (LD) cultivars.…”

Section: Introductionmentioning

confidence: 99%

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Impact of cultivar on survival of volunteer oilseed rape populations in fields is more important than field management

et al. 2018

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A joint assessment of two separate approaches investigated the occurrence of volunteer oilseed rape (Brassica napus L.; OSR) as affected by cultivar, field history and environment. Approach I comprised surveys for volunteers on >100 farmers' fields in Germany in the years 2009 and 2010. Volunteers were assigned to the cultivars grown in previous years by inter-simple sequence repeat-PCR and cluster analysis. High-dormancy cultivars resulted in 0-7 and low-dormancy cultivars in 0-1.3 volunteers m À2 . Highest numbers originated from the most recent harvests 2007 and 2006. Approach II was a meta-analysis based on 116 data sets from field trials and farmers' fields in Germany to evaluate and to rank the impact of management factors on the soil seedbank and volunteers in following crops. Varietal disposition to seed dormancy turned out to be the significantly most relevant factor. The contribution of varietal dormancy to variation in the soil seedbank and of volunteers in the 1st and 2nd following crop was 1.2-2.3 times as great as the contribution of post-harvest tillage. Up to 45% of the variation in the observations originated from factors that can be controlled by human actions on a given location in a given year. The overall analysis confirmed the results from independent short-term trials and showed that both agronomists and breeders need to contribute to reducing OSR volunteers.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of cultivar on survival of volunteer oilseed rape populations in fields is more important than field management

et al. 2018

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“…Crops with characteristics such as shattering and seed persistence are particularly likely to emerge as volunteers. Oilseed rape readily produces volunteers and feral plants, due to its high seed production, high seed losses during harvest and transport, and its secondary dormancy [97]. HR oilseed rape plants have been found up to 15 years after experimental releases, despite regular control of the fields for volunteers [98, 99].…”

Section: Reviewmentioning

confidence: 99%

Herbicide resistance and biodiversity: agronomic and environmental aspects of genetically modified herbicide-resistant plants

et al. 2017

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Farmland biodiversity is an important characteristic when assessing sustainability of agricultural practices and is of major international concern. Scientific data indicate that agricultural intensification and pesticide use are among the main drivers of biodiversity loss. The analysed data and experiences do not support statements that herbicide-resistant crops provide consistently better yields than conventional crops or reduce herbicide amounts. They rather show that the adoption of herbicide-resistant crops impacts agronomy, agricultural practice, and weed management and contributes to biodiversity loss in several ways: (i) many studies show that glyphosate-based herbicides, which were commonly regarded as less harmful, are toxic to a range of aquatic organisms and adversely affect the soil and intestinal microflora and plant disease resistance; the increased use of 2,4-D or dicamba, linked to new herbicide-resistant crops, causes special concerns. (ii) The adoption of herbicide-resistant crops has reduced crop rotation and favoured weed management that is solely based on the use of herbicides. (iii) Continuous herbicide resistance cropping and the intensive use of glyphosate over the last 20 years have led to the appearance of at least 34 glyphosate-resistant weed species worldwide. Although recommended for many years, farmers did not counter resistance development in weeds by integrated weed management, but continued to rely on herbicides as sole measure. Despite occurrence of widespread resistance in weeds to other herbicides, industry rather develops transgenic crops with additional herbicide resistance genes. (iv) Agricultural management based on broad-spectrum herbicides as in herbicide-resistant crops further decreases diversity and abundance of wild plants and impacts arthropod fauna and other farmland animals. Taken together, adverse impacts of herbicide-resistant crops on biodiversity, when widely adopted, should be expected and are indeed very hard to avoid. For that reason, and in order to comply with international agreements to protect and enhance biodiversity, agriculture needs to focus on practices that are more environmentally friendly, including an overall reduction in pesticide use. (Pesticides are used for agricultural as well non-agricultural purposes. Most commonly they are used as plant protection products and regarded as a synonym for it and so also in this text.)Electronic supplementary materialThe online version of this article (doi:10.1186/s12302-016-0100-y) contains supplementary material, which is available to authorized users.

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“…Under cultivation conditions, the persistence of secondarily dormant seed has been confirmed to be up to five years, but may reach ten years or more (Simard et al, 2002;Gulden et al, 2003b;Lutman et al, 2004Lutman et al, , 2005Lutman et al, , 2008Begg et al, 2006;Messéan et al, 2007;Jørgensen et al, 2007;D'Hertefeldt et al, 2008;Gruber et al, 2008;Andersen et al, 2010;Beckie and Warwick, 2010;Munier et al, 2012). Secondary dormancy is complex: it can be induced by a range of factors such as low temperature, soil dryness, and darkness through burial in soil (López-Granados and Lutman, 1998;Squire, 1999;Marshall et al, 2000;Momoh et al, 2002;Gruber et al, 2004Gruber et al, , 2010Gulden et al, 2004a,b), and is genotype-dependent (Gulden et al, 2004a, Gruber et al, 2010Thöle and Dietz-Pfeilstetter, 2012). Recently, dormant oilseed rape seed has been found in the soil seedbank in non-till systems, indicating that seed can fall dormant on the soil surface, and need not to be buried in the dark (Gruber et al, 2010).…”

Section: Points Raisedmentioning

confidence: 99%

Scientific advice to the European Commission on the internal review submitted under Regulation (EC) No 1367/2006 on the application of the provisions of the Aarhus Convention against the Commission Implementing Decision 2015/687 to authorise genetically modified oilseed rape MON88302

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Molecular marker-based identification of oilseed rape volunteers with different secondary dormancy levels in oilseed rape fields

Cited by 9 publications

References 20 publications

Impact of cultivar on survival of volunteer oilseed rape populations in fields is more important than field management

Impact of cultivar on survival of volunteer oilseed rape populations in fields is more important than field management

Herbicide resistance and biodiversity: agronomic and environmental aspects of genetically modified herbicide-resistant plants

Scientific advice to the European Commission on the internal review submitted under Regulation (EC) No 1367/2006 on the application of the provisions of the Aarhus Convention against the Commission Implementing Decision 2015/687 to authorise genetically modified oilseed rape MON88302

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