Edward Dickin

Harper Adams University, Crops, Faculty Member

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James Elkins

School of the Art Institute of Chicago

Jameel M Al-Khayri

King Faisal University

Prof. Dr. Moustafa Moharam

Sohag University

Vinod K K

INDIAN AGRICULTURAL RESEARCH INSTITUTE, NEW DELHI, INDIA

David Seamon

Kansas State University

Armando Marques-Guedes

UNL - New University of Lisbon

girolamo fiorentino

University of Salento

Hanaa Ahmed

Animal Health Research Institute

Prof. Tofazzal Islam

Bangabandhu Sheikh Mujibur Rahman Agricultural University

Professor Bashir O M O L A R A N Bello

University of Abuja, Nigeria

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Papers by Edward Dickin

Breeding low-glycemic index barley for functional food

Field Crops Research, 2013

Agronomic diversity of naked barley (Hordeum vulgare L.): a potential resource for breeding new food barley for Europe

Euphytica, 2012

Naked (hulless) barley was neglected by plant breeders in Europe during the period of intensive c... more Naked (hulless) barley was neglected by plant breeders in Europe during the period of intensive crop improvement in the 20th Century, but it is now receiving renewed interest due to the potential health benefits it can convey. Very few naked barley cultivars have been developed for modern UK or European agricultural systems, in contrast to the wide diversity of naked barley in Asia. Prior to initiating any breeding programme, phenotyping in UK field conditions is needed to assess the value of existing exotic landraces. This article reports such a programme where naked barley landrace lines were grown alongside modern cultivars and unimproved UK hulled landrace lines over 4 years at a research station in North Wales and assessed for yield and agronomic traits. Multivariate analysis of the traits suggested that accessions clustered by region of origin. Himalayan landrace lines formed Eastern and Western clusters while Japanese and Korean landrace lines were distinct from these. European naked barleys were found to be closest to European hulled barleys, suggesting that the distinctiveness of the Asian naked barley landrace lines was due to origin rather than the naked grain trait per se. The only agronomic trait that could be attributed to naked grain was poorer crop establishment, but some Himalayan landrace lines showed vigorous seedling growth. Modern lines of naked barley from Syria gave superior yields to old UK hulled barleys, indicating that there is potential for breeding modern UK cultivars of naked barley.

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Impact of post-anthesis rainfall, fungicide and harvesting time on the concentration of deoxynivalenol and zearalenone in wheat

by Lalit Kharbikar and Edward Dickin

Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, Jan 11, 2015

Field experiments were conducted to identify the impact of post-anthesis rainfall on the concentr... more Field experiments were conducted to identify the impact of post-anthesis rainfall on the concentration of deoxynivalenol (DON) and zearalenone (ZON) in harvested wheat grain. Winter wheat plots were inoculated with Fusarium graminearum at stem extension (GS31) and prothioconazole was applied at mid-anthesis (GS65) to split plots and plots were subsequently mist irrigated for 5 days. Plots were either covered by polytunnels, irrigated by sprinklers or left as non-irrigated uncovered control plots after medium-milk (GS75). Plots were harvested either when ripe (GS92; early harvest) or three weeks later (late harvest). Fusarium head blight (FHB) was assessed each week from inoculation. At harvest, yield and grain quality was measured and grains were analysed for DON and ZON. Differences in rainfall resulted in contrasting disease pressure in the two experiments, with low FHB in the first experiment and high FHB in the second. Difference in FHB resulted in large differences in grain yie...

Effect of genotype, environment and agronomic management on β-glucan concentration of naked barley grain intended for health food use

by Edward Dickin and Katherine Steele

Journal of Cereal Science, Jan 1, 2011

(1,3:1,4)-β-d-Glucan is an important bioactive that contributes to the ability of barley foods to... more (1,3:1,4)-β-d-Glucan is an important bioactive that contributes to the ability of barley foods to help prevent type-2 diabetes. Realisation of these benefits requires understanding of genotype and environment effects on β-glucan concentration and how this variation affects biological activity of barley foods. Field experiments showed genetic variation in β-glucan concentration (3.0–7.0 g/100 g DM), but also considerable variation between environments. β-Glucan concentrations were lower in the wet summer of 2007 than 2006 or 2009; and slightly less in the dry summer of 2006 than 2009. β-Glucan was not diluted by higher grain yields. The role of β-glucan as an assimilate buffer adds complexity to interpreting the effects of environment during grain filling. Autumn sowing and fungicide increased the duration of grain filling, decreased β-glucan concentration but increased environmental stability; possibly due to lower demand for assimilate buffering. Lodging and foliar disease decreased β-glucan concentration, by decreasing assimilate supply leading to remobilisation of carbohydrate from β-glucan, so that fungicide increased β-glucan in some disease-susceptible accessions. Sequential harvesting starting at GS 91 suggested an optimum harvest window for maximum β-glucan concentration. The variability in β-glucan reported here between genotypes and environments was sufficient to affect control of post-prandial blood glucose in healthy volunteers.

Growth and yield responses of UK wheat cultivars to winter waterlogging

by Edward Dickin and Sarita Bennett

Journal of Agricultural Science, Jan 1, 2009

The effects of winter waterlogging and summer drought on the growth and yield of winter wheat ( Triticum aestivum L.)

European Journal of Agronomy, Jan 1, 2008

Winter waterlogging and summer drought may become more prevalent as a result of climate change. T... more Winter waterlogging and summer drought may become more prevalent as a result of climate change. Their effects on the growth and yield of winter wheat were investigated. Wheat was grown in lysimeters in an unheated glasshouse, over two seasons. Seed rate was included as an additional factor in the first season, and cultivar in the second. Root growth was investigated in both seasons using mini-rhizotrons. Waterlogging for 44 days at 93 days after sowing in 2002, and 58 days at 64 days after sowing in 2003, decreased grain yield by 20% and 24%, respectively. Drought during grain filling further decreased yields but there was no evidence that winter waterlogged plants were more susceptible to damage from drought the following summer, the effects of the two stresses being additive. Waterlogging decreased the total length, but not the final depth of the root system. Plots with a lower plant density demonstrated a smaller decrease in yield due to waterlogging. There was a significant positive linear relationship between the number of shoots per plant and nodal root axes per plant. There appeared to be a difference between cultivars in root system architecture, and in their response to waterlogging, but these differences were not reflected in grain yield.