|
|
|
|
|
| Jones, H; Boyd, H. E.; Clarke, S; Haigh, Z. E. L; Wolfe, M. |
| Twenty winter wheat varieties used as parents in a half diallel crossing programme for the production of wheat populations were grown in field trials at two organic and two non-organic sites over three years in England. Yields of the varieties between the two non-organic sites were highly correlated, but less so between the two organic sites and between the non-organic and organic sites. At the non-organic sites, most of the variation in yield (60%) was due to varietal differences, whereas, at the organic sites, it was due largely to the effects of environment (79%), and genotypic variation only accounted for 9%. More detailed analysis, using AMMI (Additive Main effects and Multiplicative Interaction), allowed stricter comparisons among individual... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Crop combinations and interactions Breeding; Genetics and propagation. |
| Ano: 2008 |
URL: http://orgprints.org/13205/1/Jones_13205_ed.doc |
| |
|
|
| Wolfe, M; Snape, J. |
| The principal objective of the project is to develop composite cross populations of wheat based on a wide range of key parent varieties. The parents will be selected partly on past knowledge of successful performance in terms of yield, quality and disease resistance and partly on the basis of molecular ancestry to try to ensure as wide range of diversity as possible. Following parental inter-crossing in all possible combinations, progeny population samples will be exposed to a range of widely different agricultural environments and systems through several seasons of, largely, natural selection. Performance of the population samples will be compared at different stages against both the parents grown as pure stands and as physical mixtures. Our objective... |
| Tipo: Project description |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2007 |
URL: http://orgprints.org/6671/1/ORC_wheat_breeding_2007.pdf |
| |
|
|
| Pickett, JA; Wadhams, LJ; Pye, BJ; Smart, LE; Wolfe, M. |
| This study addresses the extent to which pest management systems can exploit semiochemicals (defined below) in ways acceptable to organic farming, and determines where the science base needs to be expanded to accommodate specific problems arising in an increasing organic farming sector. It considers whether current knowledge of semiochemical release from particular crop plants, herbs and wild plant species could be investigated further in relation to organic farming practice and identifies how strategies of multiple cropping, that exploit known semiochemical interactions, could be applied to key pest problems in organic production. Where such exploitation is not feasible, other strategies using semiochemicals including traps, extracts of natural products... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2000 |
URL: http://orgprints.org/9957/1/Studies_on_exploiting_semiochemicals_for_pest_management_in_organic_farming_systems_OF0188.pdf |
| |
|
|
|
