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	Provedor de dados AgEcon (2) Acta Botanica (1) Autor Hayes, Dermot J. (2) Lamkey, Kendall R. (2) Ripplinger, David G. (2) Brown,Chandler D. (1) Goggi, Susana (1) Williams,Joseph H. (1) Mais... Palavra-chave Pollen dispersal (3) Contemporaneous fertility (2) Insurance (2) Costs and benefits (1) Crop Production/Industries (1) Desiccation stress (1) Evolution of development (1) Lagrangian stochastic model (1) Pharmaceutical maize (1) Pharmaceutical-corn (1) Pollen germination (1) Pollen hydration (1) Risk and Uncertainty (1) Risks and benefits (1) Spore dormancy (1) Stochastic model. (1) Trade-off (1) Mais... Tipo do documento Conference Paper or Presentation (1) Info:eu-repo/semantics/article (1) Working or Discussion Paper (1) Ano 2018 (1) 2008 (1) 2004 (1) País United States (2) Brazil (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Insuring Against Losses from Transgenic Contamination: The Case of Pharmaceutical Maize AgEcon Ripplinger, David G.; Hayes, Dermot J.; Goggi, Susana; Lamkey, Kendall R.. Concerns about the risk of food supply contamination and the resulting financial losses have limited the development and commercialization of certain pharmaceutical plants. This article develops an insurance pricing model that helps translate these concerns into a cost-benefit analysis. The model first estimates the physical dispersal of maize pollen subject to a number of weather parameters. This distribution is then validated with the limited amount of currently available field trial data. The physical distribution is then used to calculate the premium for a fair-valued insurance policy that would fund the destruction of possibly contaminated fields. The flexible framework can be readily adapted to other crops, management practices, and regions. Tipo: Working or Discussion Paper Palavras-chave: Contemporaneous fertility; Costs and benefits; Insurance; Pharmaceutical maize; Pollen dispersal; Risks and benefits; Stochastic model.. Ano: 2008 URL: http://purl.umn.edu/37332 INSURING AGAINST LOSSES FROM TRANSGENIC CONTAMINATION AgEcon Ripplinger, David G.; Hayes, Dermot J.; Lamkey, Kendall R.. Concerns about contamination of the food supply and the financial losses that would result have limited the promise of certain genetically engineered plants. This article addresses the situation by constructing an insurance pricing model to protect against those losses. The model first estimates the physical dispersal of corn pollen subject to a number of parameters. This physical distribution is then used to calculate the premium for fair valued insurance that would be necessary to destroy contaminated fields. The flexible framework can be readily adapted to other crops, management practices, and regions. Tipo: Conference Paper or Presentation Palavras-chave: Contemporaneous fertility; Insurance; Lagrangian stochastic model; Pharmaceutical-corn; Pollen dispersal; Crop Production/Industries; Risk and Uncertainty. Ano: 2004 URL: http://purl.umn.edu/20350 Pollen has higher water content when dispersed in a tricellular state than in a bicellular state Acta Botanica Williams,Joseph H.; Brown,Chandler D.. ABSTRACT Pollen is generally dispersed in a sexually immature and somewhat dehydrated, metabolically quiescent state. Yet, in some species, pollen at anthesis is well-hydrated and metabolically active, and in 30 % of angiosperms pollen is dispersed after having formed its sperm cells. Pollen water content and sexual maturity may be correlated, either because both are subject to trade-offs between dispersal viability and post-pollination performance, or because the traits display developmental linkages. We inferred relative water content of sexually immature (“bicellular”) and sexually mature (“tricellular”) pollen of 30 species of angiosperms using a hydration index (HI) that ranges from zero to one, based on how near fresh pollen volume is to its minimal... Tipo: Info:eu-repo/semantics/article Palavras-chave: Desiccation stress; Evolution of development; Pollen dispersal; Pollen germination; Pollen hydration; Spore dormancy; Trade-off. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000300454 Registros recuperados: 3 Primeira ... 1 ... Última

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