Match!
J. W. Snape
Norwich Research Park
162Publications
50H-index
8,732Citations
Publications 162
Newest
#1Samuel Knapp (TUM: Technische Universität München)H-Index: 2
#2Thomas F. Döring (University of Bonn)H-Index: 7
Last.Simon Griffiths (JIC: John Innes Centre)H-Index: 27
view all 8 authors...
Most of our crops are grown in monoculture with single genotypes grown over wide acreage. An alternative approach, where segregating populations are used as crops is an exciting possibility, but outcomes of natural selection upon this type of crop are not well understood. We tracked allelic frequency changes in evolving composite cross populations (CCPs) of wheat grown over ten generations under organic and conventional farming. At three generations, each population was genotyped with 19 SSR and...
Several sets of wheat inter-varietal chromosome substitution lines (SLs) have been produced over the last fifty years at the CRI (formerly RICP) in Prague-Ruzyně, based on cytogenetic manipulations using aneu - ploids. Lines with defined genes have been obtained which significantly influence growth habit and flowering time and these have been used particularly in the study of the genetics and physiology of flowering. The sets of lines include substitutions of homoeologous group 5 chromosomes car...
#1Jemima Brinton (Norwich Research Park)H-Index: 5
#2James Simmonds (Norwich Research Park)H-Index: 18
Last.Cristobal Uauy (Norwich Research Park)H-Index: 38
view all 6 authors...
Summary Crop yields must increase to address food insecurity. Grain weight, determined by grain length and width, is an important yield component, but our understanding of the underlying genes and mechanisms is limited. We used genetic mapping and near isogenic lines (NILs) to identify, validate and fine-map a major quantitative trait locus (QTL) on wheat chromosome 5A associated with grain weight. Detailed phenotypic characterisation of developing and mature grains from the NILs was performed. ...
#1Jemima Brinton (Norwich Research Park)H-Index: 5
#2James Simmonds (Norwich Research Park)H-Index: 18
Last.Cristobal Uauy (Norwich Research Park)H-Index: 38
view all 6 authors...
Crop yields must increase to address food insecurity. Grain weight, determined by grain length and width, is an important yield component, but our understanding of the underlying genes and mechanisms is limited. We used genetic mapping and near isogenic lines (NILs) to identify, validate and fine map a major quantitative trait loci (QTL) on wheat chromosome 5A associated with grain weight. Detailed phenotypic characterisation of developing and mature grains from the NILs was performed. We identi...
#1R. Horn (JIC: John Innes Centre)H-Index: 1
#2Luzie U. Wingen (JIC: John Innes Centre)H-Index: 18
Last.Liam Dolan (University of Oxford)H-Index: 49
view all 4 authors...
Root hairs are fast growing, ephemeral tubular extensions of the root epidermis. They arise in the unsuberized maturation zone of the root, effectively increasing the root surface area in the region over which nutrient and water uptake occur. Variation in root hair length (RHL) between varieties has been shown to be genetically determined, and could, therefore, have consequences for nutrient capture and yield potential in crops. We describe the development of a medium-to-high throughput screenin...
#1Thomas F. Döring (Newbury College)H-Index: 1
#2Paolo Annicchiarico (Consiglio per la ricerca e la sperimentazione in agricoltura)H-Index: 25
Last.Martin Wolfe (Suffolk University)H-Index: 7
view all 9 authors...
Abstract This study investigated the effects of increased genetic diversity in winter wheat ( Triticum aestivum L.), either from hybridization across genotypes or from physical mixing of lines, on grain yield, grain quality, and yield stability in different cropping environments. Sets of pure lines (no diversity), chosen for high yielding ability or high quality, were compared with line mixtures (intermediate level of diversity), and lines crossed with each other in composite cross populations (...
#1Simon Griffiths (Norwich Research Park)H-Index: 27
#2Luzie U. Wingen (Norwich Research Park)H-Index: 18
Last.James Simmonds (Norwich Research Park)H-Index: 18
view all 10 authors...
Grain weight (GW) and number per unit area of land (GN) are the primary components of grain yield in wheat. In segregating populations both yield components often show a negative correlation among themselves. Here we use a recombinant doubled haploid population of 105 individuals developed from the CIMMYT varieties Weebill and Bacanora to understand the relative contribution of these components to grain yield and their interaction with each other. Weebill was chosen for its high GW and Bacanora ...
#1Simon GriffithsH-Index: 27
#2Luzie U. WingenH-Index: 18
Last.J. W. SnapeH-Index: 50
view all 10 authors...
Grain weight (GW) and number per unit area of land (GN) are the primary components of grain yield in wheat. In segregating populations both yield components often show a negative correlation among themselves. Here we use a recombinant doubled haploid population of 105 individuals developed from the CIMMYT varieties Weebill and Bacanora to understand the relative contribution of these components to grain yield and their interaction with each other. Weebill was chosen for its high GW and Bacanora ...
#1James Simmonds (JIC: John Innes Centre)H-Index: 18
#2Peter Scott (JIC: John Innes Centre)H-Index: 2
Last.Cristobal Uauy (JIC: John Innes Centre)H-Index: 38
view all 8 authors...
Background Grain yield in wheat is a polygenic trait that is influenced by environmental and genetic interactions at all stages of the plant’s growth. Yield is usually broken down into three components; number of spikes per area, grain number per spike, and grain weight (TGW). In polyploid wheat, studies have identified quantitative trait loci (QTL) which affect TGW, yet few have been validated and fine-mapped using independent germplasm, thereby having limited impact in breeding.
#1Aidan D. Farrell (UWI: University of the West Indies)H-Index: 7
#2P. S. Kettlewell (Harper Adams University)H-Index: 2
Last.Peter JackH-Index: 10
view all 7 authors...
The occurrence of late maturity alpha-amylase (LMA) was investigated using two doubled haploid wheat populations segregating for the dwarfing gene Rht-D1b and the 1B/1R translocation. Genotypes were assessed in the field and in controlled environments where a cold-shock treatment was used to induce LMA. Results from field-grown genotypes from the cross Spark × Rialto suggest that the absence of Rht-D1b or the presence of the 1B/1R translocation increases the expression of LMA.These two genetic f...
12345678910