Written in EnglishRead online
|Series||HGCA Project Report -- No.OS32|
|Contributions||Pekrun, C., Albertini, A., Home-Grown Cereals Authority.|
|The Physical Object|
|Number of Pages||51|
Download Dormancy and persistence of volunteer oilseed rape.
The deeper insights into dormancy formation of oilseed rape provide the possibility to improve harvest time and harvest method, and to better assess the potential for volunteer oilseed rape in.
However, oilseed rape is renowned for its long-term seed dormancy and volunteer GM plants, i.e. plants appearing in the following crop, can occur 10 years after GM oilseed rape cultivation (D. Volunteer oilseed rape is a relevant weed in many crop rotations due to seed persistence and dormancy.
With the intro-duction of imidazolinone-tolerant oilseed rape varieties in Europe, herbicide-based control strategies of volunteers in cereals may become ineffective in the future.
Experiments were conducted on experimental fields and in outdoor pots in Bingen (Germany) to quantify the effect Cited by: 6. Genetically reducing the capacity of oilseed rape cultivars to produce secondary dormant seeds provides a possibility to reduce seed and pollen dispersal of transgenic modified cultivars.
The objective of the present study was to analyze the genetic variation for secondary seed dormancy in a set of current European winter oilseed rape cultivars.
Oilseed rape is known to persist in arable fields because of its ability to develop secondary seed dormancy in certain agronomic and environmental conditions.
If conditions change, rapeseeds are able to germinate up to 10 years later to build volunteers in ensuing crops. Extrapolations of experimental data acted on the assumption of persistence periods for more than 20 years after last harvest Cited by: 6.
Gruber S, Pekrun C, Claupein W () Population dynamics of volunteer oilseed rape (Brassica napus L.) affected by tillage.
Eur J Agron –Gubler F, Millar AA, Jacobsen JV () Dormancy release, ABA and pre–harvest sprouting. Oilseed rape has a number of traits that increase the risk of low erucic acid rapeseed (LEAR) crops being contaminated with EA from HEAR varieties.
The quantity of seed produced and the potential for seed dormancy coupled with partial autogamy (self-fertilisation) facilitate the establishment and persistence of volunteer and feral : Douglas J.
Warner, Kathleen A. Lewis. volunteer seeds. Relatively well developed. wild populations growing next to oilseed rape along 34 km of the Thames River in the United Kingdom and assessed the persistence of 18 feral oilseed rape populations over a period of three years. They analyzed several variables that would influence the movement of chloroplast genes from crops to Cited by: Lutman P.J.W.
() The occurrence and persistence of volunteer oilseed rape (Brassica napus). Aspect of Applied Biology. Lutman P.J.W., Freeman S.E. and Pekrun C. () The long-term persistence of seeds of oilseed rape (Brassica napus) in arable Author: علی شایان فر, فرشید قادری فر, رحمت الله بهمرام, افشین سلطانی, حمیدرضا صادقی پور.
COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.
Volunteer Oilseed Rape - Will Herbicide-Resistance Traits Assist Ferality. Linda M. Hall, M. Habibur Rahman, Robert H. Gulden, and A. Gordon Thomas: Brassica rapa and B. napus Origins and Biology.
Biological Characteristics Influencing Weediness. Presence and Persistence of. The age of the seed bank germinating to become volunteers was assumed from information on previously cultivated oilseed rape varieties at the site and the year of cultivation.
Dormancy and persistence of volunteer oilseed rape. book results showed that plants or seeds belonged to varieties cultivated at the site 4–17 years earlier, suggesting a long persistence of volunteer populations.
Volunteer and feral plants can cause significant weed problems and provide a bridge for the escape of genes and traits from cultivated populations. Transgenic (GM) herbicide tolerant oilseed rape has provided a model system to investigate the spread and persistence of a.
Introduction. Between andglobal production of genetically modified (GM) crops increased from million hectares to over million hectares, and the number of countries in which GM crops are produced increased from six to 27 (James ).The vast majority of the GM crops consist of soybean, corn, cotton, and canola, although modified forms of other crops, such as alfalfa, sugar Cited by: 9.
The potential of genetically modified (GM) crops to transfer foreign genes through pollen to related plant species has been cited as an environmental concern.
Until Cited by: evaluation of the domestication status of cow cockle Published by Guset User, Description: iii persistence between the populations, considerable numbers of seed of both weedy and cultivated lines were recovered from the soil seed bank at the end of the study. CL weed control JThe CL herbicides control a wide range of broadleaved weeds as well as competing volunteer oilseed rape plants, which can help when assessing spring crop canopies, said BASF’s.
Eur. Entomol.| DOI: /eje Burial-induced changes in the seed preferences of carabid beetles (Coleoptera: Carabidae) Pavel SASKA 1, Alois HONĚK 1, Hana FOFFOVÁ 1,2, Zdenka MARTINKOVÁ 1 1 Crop Research Institute, Functional Diversity in Agro-Ecosystems, Drnovská06 Praha 6 - Ruzyně, Czech Republic; e-mails: [email protected], Cited by: 1.
BACKGROUND: Gene flow between crops and weedy relatives depends on the survivorship and reproduction of early-generation hybrids in a field environment. The primary aim of this study was to compare the fitness of transgenic crop × wild hybrids with their parental types and a non-transgenic crop type in the field under enhanced temperature and by: Crop Ferality and Volunteerism brings together research pioneers from various disciplines including the crop, plant, and weed sciences to discuss crop ferality and volunteerism.
The book provides thorough coverage of crop and plant molecular biology and genetics as it pertains to ferality and weeds.
Oilseed rape and the F 1 have the same growth parameters and sensitive individuals of B. campestris, oilseed rape and oilseed rape volunteers are controlled with the same efficacy for each herbicide (for model equations and parameter values, see Appendix 2).
Genotypic variation in the develop-ment of secondary dormancy in oilseed rape and its impact on the persistence of volunteer rape.
Proceedings Brighton Crop Protection Conference - Weeds: Contribution to conference PEKRUN, C., POTTER, T.C. & LUTMAN, P.J.W. Little is known about seed dormancy and soil seed bank persistence of B. carinata (Johnson, ). One study found that seeds exhibit some primary dormancy for a. Thus, the frequency of pollen originating from a transgene oilseed rape decrease from to %, as distance increase from 1 to 47 m.
Also, frequency of crop-wild relative hybrid decreased from to % with increase in distance from pollen source between and m [ 88 ].Author: Sava Vrbničanin, Dragana Božić, Danijela Pavlović.
Volunteer Plants. Plant volunteers are known to occur in conventional farming systems and, by extension, similar situations are possible in transgenic agriculture, particularly in those cases where the untransformed crop is known to be a volunteer problem.
and dormancy leading to enhanced seed persistence. In addition, seed dispersal. Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF.
Visit to get more information about this book, to buy it in print, or to download it as a free PDF. Introduction. Between andglobal production of genetically modified (GM) crops increased from million hectares to over million hectares, and the number of countries in which GM crops are produced increased from six to 27 (James ).The vast majority of the GM crops consist of soybean, corn, cotton, and canola, although modified forms of other crops, such as alfalfa, Cited by: 9.
Likewise, the potential of rape seeds to persist in the soil and to emerge later as volunteers in following crops is mainly driven by the ability of the seeds to go into dormancy under certain soil conditions (Weber et al. Similarly, in cotton seeds, dormancy can be Cited by: 3.
Some of the information in this book was borrowed from studies on grain corn, because of a dearth of studies on silage corn. For example, the sections on tillage practices and soil compaction (Section 3) are based largely on studies on grain corn production, which is somewhat unfortunate because of the large difference in amount of crop residue.
Oilseed rape (OSR) has one of the highest potential for gene flow through seed and pollen. Volunteer plants are one of the most important sources of contamination of OSR crop of different quality cultivars.
The aim of this study was to estimate the abundance of soil seed bank after the harvest of high erucic (HE) cultivar Maplus and to determine biochemical and molecular characteristics of OSR. Titel Jahr Publikationsart Autoren ; Agronomic performance of new open pollinated experimental lines of broccoli (Brassica oleracea L.
var. italica) PLoS ONE: Zeitschriften. Geneflow and GM environmental risk assessment The Institute was among the first to emphasise the 'landscape' dimensions of geneflow among crops, volunteers, ferals and wild relatives. Between andand thenresearch grants supported a multidisciplinary group with the ecological, molecular and biometrical skills to take an international lead, notably through EU projecfts.
Lopez-Granados, F., Litman, P.J.W. (): Effect of environmental conditions on the dormancy and germination of volunteer oilseed rape seed (Brassica napus).
Weed Science. Jørgensen R.B., Andersen neous hybridization between oilseed rape (Brassica napus) and weedy Brassica campestris (Brassicaceae): a risk of growing genetically modified oilseed rape Am. Bot., 81 (), pp. Cited by: Gulden RH, Thomas AG, Shirtliffe SJ.
Secondary seed dormancy prolongs persistence of volunteer canola (Brassica napus) in western Canada. Weed Sci. – Gulden RH, Thomas AG, Shirtliffe SJ. Secondary dormancy, temperature, and seed burial depth regulate seedbank dynamics in B.
napus. Weed Sci. – Desiccation of seed crops will also be an issue for oilseed rape, linseed and pulse growers, again where no alternative exists.” rFinal sales date: J rFinal use or disposal date.
An update on the persistence of seeds from crops of conventional and herbicide tolerant oilseed rape (Brassica napus).
Abstracts 2nd International Conference on Co-existence between GM and non-GM based agricultural supply chains, Montpellier, November Author: A.
Dewar, L. Haylock, M. May, J. Beane, R. Perry. Careful volunteer canola management in the year after a canola crop helps preclude additional glyphosate-resistant canola management concerns in subsequent years (Harker et al. Pekrun et al. () showed that volunteer canola is less prone to develop secondary dormancy and persist in soil seedbanks if tillage is delayed for severalFile Size: 2MB.
Gulden () reports a high level of secondary seed dormancy for B. napus in the field. Therefore, for the purposes of confined research field trials, it would be beneficial if breeders selected for the low secondary seed dormancy phenotype as part of their breeding strategy in.
Oilseed rape (Brassica napus) as a resource for farmland insect pollinators: quantifying floral traits in conventional varieties and breeding systems. GCB Bioenergy. 9 (8), pp. The implications of spatially variable pre-emergence herbicide efficacy for weed by: 2.
A transgenically mitigated (TM), dwarf, herbicide-resistant construct using a gibberellic acid-insensitive (Deltagai) gene in the B. napus crop was effective in offsetting the risks of transgene establishment in volunteer populations of B.
napus (oilseed rape) . Dwarfing the transgenic crop did not hurt yield of the oil seeds, but.Volunteer oilseed rape and its sexually-compatible relative, Brassica rapa, are considered to be weeds because they compete with food crops and require management.
Although Dr. Snow does not address in this statement the potential weediness and pest problems of volunteers in crop rotation, the European Communities agrees with these experts that.The Resource Book has been prepared in response to an expressed need, with the purpose of being used as a training tool in future activities.
The Resource Book also aims at providing biosafety regulators, policy-makers and members of national biosafety committees with reference materials that can be readily consulted beyond the training events.