R. Butler

Publications202
h-index30
Citations3,243
Highly Influential Citations207
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QTL Mapping of Partial Resistance to Field Epidemics of Ascochyta Blight of Pea
TLDR
Linkage of Ascochyta blight resistance QTLs to candidate genes including disease response genes and resistance gene analogs and of the QTL for plant reproductive stage to a pea homolog of the Arabidopsis thaliana CONSTANS gene controlling flowering time in response to photoperiod is discussed.
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Quantification of progeny classes in two facultatively apomictic accessions of Hieracium.
TLDR
A method for identifying individuals from different progeny classes based on the inheritance of introduced heterologous marker genes is developed, which permits the screening of many thousands of seedlings at germination, and the consequent isolation of individuals associated with rare classes.
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Resistance of cowpea [Vigna unguiculata (L.) Walp.] to Striga gesnerioides (Willd.) Vatke, a parasitic angiosperm.
TLDR
In vitro growth system was used to investigate the expression of resistance of cowpea varieties B301 and 58-57 to the angiosperm parasite Striga gesnerioides (Willd.) Vatke, and similarities between the expressionof resistance ofcowpea to Striga and ot plants to plant pathogenic fungi are discussed.
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Selenium concentration in wheat (Triticum aestivum) grain as influenced by method, rate, and timing of sodium selenate application
TLDR
The results suggested that the plant availability of applied Se can decrease rapidly in the soil and, to be most effective, fertiliser Se should be applied when the crop is beginning to grow rapidly in spring.
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Susceptibility of Campylobacter jejuni and Yersinia enterocolitica to UV radiation
TLDR
It appears that C. jejuni and Y. enterocolitica serogroup O:3 are more sensitive to UV than many of the pathogens associated with waterborne disease outbreaks and can be easily inactivated in most commercially available UV reactors.
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Susceptibility of potato (Solanum tuberosum) cultivars to powdery scab (caused by Spongospora subterranea f. sp. subterranea), and relationships between tuber and root infection
TLDR
Scaled average severity scores for the cultivars and lines followed a continuum between very resistant and very susceptible, suggesting that resistance to powdery scab is quantitative, and reaffirm the potential for using plant resistance as a powderyScab management strategy.
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Insecticide resistance in onion thrips (Thrips tabaci) (Thysanoptera: Thripidae)
TLDR
The New Zealand onion industry responded to the initial failure of insecticides by developing and implementing an insecticide resistance management strategy and research to improve onion thrips control.
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Colour and odour responses of flying western flower thrips: wind tunnel and greenhouse experiments
TLDR
There was no evidence of an odour‐induced visual response, an odours‐induced anemotactic response or chemotaxis by female thrips to anisaldehyde in wind tunnel bioassays, but chemokinesis was implicated.
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Ventilation in Plant Tissue Cultures and Effects of Poor Aeration on Ethylene and Carbon Dioxide Accumulation, Oxygen Depletion and Explant Development
TLDR
Ventilation of different vessels can be compared quantitatively when sealed to varying extents to show the consequences of restricting aeration to defined limits on concentrations of ethylene, carbon dioxyde and oxygen in culture vessels.
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The burrowing characteristics of three common earthworm species
The burrowing characteristics of 3 common earthworm species were studied using X-ray computed tomography (CT) scanning in large cylinders (24.1 cm diam.) packed with topsoil (0–25 cm) and subsoil…
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