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M. John Foulkes
University of Nottingham
23Publications
16H-index
1,247Citations
Publications 23
Newest
Published on May 1, 2019in Field Crops Research 3.87
Carolina Rivera-Amado1
Estimated H-index: 1
,
Carolina Rivera-Amado (CIMMYT: International Maize and Wheat Improvement Center)+ 3 AuthorsM. John Foulkes16
Estimated H-index: 16
Abstract Improving biomass is an important goal for future genetic gains in yield potential in wheat, but it will also be crucial to identify physiological traits to maximize harvest index (HI, proportion of aboveground biomass in grain). Increased grain partitioning will require increased dry-matter (DM) partitioning to the spikes at anthesis as well as enhanced fruiting efficiency (FE, grains per g spike dry matter at anthesis or chaff dry matter at harvest), whilst optimizing the partitioning...
Published on Mar 12, 2018in bioRxiv
Larry M. York8
Estimated H-index: 8
,
Shaunagh Slack2
Estimated H-index: 2
(University of Nottingham)
+ 1 AuthorsM. John Foulkes16
Estimated H-index: 16
(University of Nottingham)
Wheat represents a major crop, yet the current rate of yield improvement is insufficient to meet its projected global food demand. Breeding root systems more efficient for water and nitrogen capture represents a promising avenue for accelerating yield gains. Root crown phenotyping, or shovelomics, relies on excavation of the upper portions of root systems in the field and measuring root properties such as numbers, angles, densities and lengths. We report a new shovelomics method that images the ...
Published on Oct 13, 2017in Journal of Experimental Botany 5.36
Kim Kenobi11
Estimated H-index: 11
(Aberystwyth University),
Jonathan A. Atkinson6
Estimated H-index: 6
(University of Nottingham)
+ 6 AuthorsMalcolm J. Bennett70
Estimated H-index: 70
(University of Nottingham)
Root architecture impacts water and nutrient uptake efficiency. Identifying exactly which root architectural properties influence these agronomic traits can prove challenging. In this paper approximately 300 wheat plants were divided into four groups using two binary classifications, high vs. low nitrogen uptake efficiency (NUpE), and high vs. low nitrate in medium. The root system architecture for each wheat plant was captured using 16 quantitative variables. The multivariate analysis tool, lin...
Published on Jul 1, 2016in Field Crops Research 3.87
Oorbessy Gaju12
Estimated H-index: 12
(University of Nottingham),
Jayalath DeSilva1
Estimated H-index: 1
(University of Nottingham)
+ 4 AuthorsM. John Foulkes16
Estimated H-index: 16
(University of Nottingham)
Abstract Future genetic progress in wheat grain yield will depend on increasing above-ground biomass and this must be achieved without commensurate increases in N fertilizer inputs to minimise environmental impacts. Our objective was to quantify variation in grain yield, above-ground biomass and N-use efficiency (NUE) and associated traits in a panel of diverse hexaploid wheat germplasm comprising: (i) landraces from the AE Watkins collection, (ii) synthetic-derived hexaploid lines in a cv. Para...
Published on Apr 1, 2015in Journal of Experimental Botany 5.36
Jonathan A. Atkinson6
Estimated H-index: 6
(University of Nottingham),
Luzie U. Wingen18
Estimated H-index: 18
(Norwich Research Park)
+ 8 AuthorsJulie King13
Estimated H-index: 13
(University of Nottingham)
Seedling root traits of wheat (Triticum aestivum L.) have been shown to be important for efficient establishment and linked to mature plant traits such as height and yield. A root phenotyping pipeline, consisting of a germination paper-based screen combined with image segmentation and analysis software, was developed and used to characterize seedling traits in 94 doubled haploid progeny derived from a cross between the winter wheat cultivars Rialto and Savannah. Field experiments were conducted ...
Published on Aug 1, 2014in Field Crops Research 3.87
Oorbessy Gaju12
Estimated H-index: 12
(University of Nottingham),
Matthew P. Reynolds61
Estimated H-index: 61
(CIMMYT: International Maize and Wheat Improvement Center)
+ 4 AuthorsM. John Foulkes16
Estimated H-index: 16
(University of Nottingham)
Our objective was to investigate the relationships between spike traits, grain number and yield potential and their physiological basis in a doubled-haploid (DH) population derived from a cross between a CIMMYT spring wheat (Triticum aestivum L.) advanced line of large-spike phenotype (LSP2; +Tin1 tiller inhibition gene) and the UK winter wheat cultivar Rialto (R; −Tin1) of conventional spike phenotype. Field experiments were carried out in high radiation, irrigated conditions in NW Mexico in tw...
Published on May 1, 2014in Journal of Integrative Plant Biology 3.82
Pedro Carvalho3
Estimated H-index: 3
(University of Nottingham),
Sayed Azam-Ali3
Estimated H-index: 3
(University of Nottingham Malaysia Campus),
M. John Foulkes16
Estimated H-index: 16
(University of Nottingham)
In Mediterranean regions drought is the major factor limiting spring barley and durum wheat grain yields. This study aimed to compare spring barley and durum wheat root and shoot responses to drought and quantify relationships between root traits and water uptake under terminal drought. One spring barley (Hordeum vulgare L. cv. Rum) and two durum wheat Mediterranean cultivars (Triticum turgidum L. var durum cvs Hourani and Karim) were examined in soil-column experiments under well watered and dr...
Published on Jan 1, 2014in Field Crops Research 3.87
Oorbessy Gaju12
Estimated H-index: 12
(University of Nottingham),
Vincent Allard22
Estimated H-index: 22
(Blaise Pascal University)
+ 5 AuthorsM. John Foulkes16
Estimated H-index: 16
(University of Nottingham)
Abstract Our objective was to investigate the determinants of genetic variation in N accumulation, N partitioning and N remobilization to the grain post-flowering and associations with flag-leaf senescence, grain yield and grain N% in 16 wheat cultivars grown under high N (HN) and low N (LN) conditions in the UK and France. Overall, cultivars ranged in leaf lamina N accumulation at anthesis from 5.32 to 8.03 g N m −2 at HN and from 2.69 to 3.62 g N m −2 at LN, and for the stem-and leaf-sheath fr...
Published on Nov 1, 2012in Plant Physiology 6.30
Delphine Moreau12
Estimated H-index: 12
(INRA: Institut national de la recherche agronomique),
Vincent Allard22
Estimated H-index: 22
(INRA: Institut national de la recherche agronomique)
+ 3 AuthorsPierre Martre33
Estimated H-index: 33
(INRA: Institut national de la recherche agronomique)
Vertical leaf nitrogen (N) gradient within a canopy is classically considered as a key adaptation to the local light environment that would tend to maximize canopy photosynthesis. We studied the vertical leaf N gradient with respect to the light gradient for wheat (Triticum aestivum) canopies with the aims of quantifying its modulation by crop N status and genetic variability and analyzing its ecophysiological determinants. The vertical distribution of leaf N and light was analyzed at anthesis f...
Published on Oct 1, 2012in European Journal of Agronomy 3.38
Jianqiang He10
Estimated H-index: 10
(Blaise Pascal University),
Jacques Le Gouis26
Estimated H-index: 26
(Blaise Pascal University)
+ 9 AuthorsM. John Foulkes16
Estimated H-index: 16
(University of Nottingham)
The rate of organ emergence and the duration of developmental phases are key components of plant fitness to its environment. Here, we describe a hybrid genetic algorithm for the estimation of the parameters of complex non-linear simulation models that we used to estimate the varietal parameters of a well-evaluated ecophysiological model (Sirius) of wheat phenology. The aim of this study was to analyze the correlations between the varietal parameters of Sirius and to determine the minimum number ...
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