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X. Ni ; S. Quisenberry | 2000The concentration of a hydroxamic acid, also known as DIMBOA (2,4-dihydroxy-7methoxy-1, 4-benzoxazin-3-one), in 6-d old wheat seedlings was examined using reverse-phase high performance liquid chromatography (HPLC). Wheat plant introduction (PI)[...]
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S. Budak ; S. Quisenberry ; X. Ni | 1999The Russian wheat aphid, Diuraphis noxia (Mordvilko), is one of the most important aphid pests of wheat, Triticum aestivum L., worldwide. Among the various pest management options, plant resistance is an economical management tactic to control D[...]
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X. Ni ; S. Quisenberry | 1997Salivary sheath distribution of the Russian wheat aphid, Diuraphis noxia (Mordvilko), on 'Arapahoe' (susceptible) and 'Halt' (resistant) wheat, Triticum aestivum L., leaves were compared. D. noxia produced both single and multiple branched saliv[...]
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X. Ni ; S. Quisenberry | 1997Five genotypes of wheat, Triticum aestivum L. ('Arapahoe', 'Halt', PI 137739, PI 225245, and PI 262660), were compared for their antixenotic effects on the Russian wheat aphid, Diuraphis noxia (Mordvilko). Comparisons were made by host plant cho[...]
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M. Rafi ; R. Zemetra ; S. Quisenberry | 1997Effects of Russian wheat aphid (Diuraphis noxia Mordvilko) feeding on resistant wheat (Triticum aestivum L.) plant introduction line, PI 137739 (antibiotic line), and a susceptible cultivar, Stephens, were examined. Reduction in leaf chlorophyll[...]
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X. Ni ; S. Quisenberry ; S. Pornkulwat ; J. Figarola ; S. Skoda ; J. Foster | 2000Four hydrolases and five oxido-reductases were examined using native stacking polyacrylamide gel electrophoresis. Homogenate of Russian wheat aphid, Diuraphis noxia (Mordvilko), bird cherry-oat aphid, Rhopalosiphum padi (L.), 'Arapahoe' (aphid-s[...]
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H. Wilson ; S. Quisenberry | 1986
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X. Ni ; S. Quisenberry ; J. Markwell ; T. Hengmoss ; L. Higley ; F. Baxendale ; G. Sarath ; R. Klucas | 2001Chlorophyll degradation is a complex phenomenon that often accompanies insect feeding damage to plants. Loss of chlorophyll can be initiated by several reactions, including oxidative bleaching, chlorophyllase activity, and Mg-dechelatase activit[...]
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X. Ni ; S. Quisenberry ; B. Siegfried ; K. Lee | 1998The effect of cereal leaf surface wax on Diuraphis nox-ia (Mordvilko), the Russian wheat aphid, probing behavior epicuticular wax from wheat (Triticum aestivum L.) c.v. 'Arapahoe' and 'Halt' was different from barley (Hordeum vulgare L.) c.v. 'M[...]
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S. Quisenberry ; D. Schotzko ; P. Lamb ; F. Young | 2000The effects of tillage method (conventional or conservative) and weed management level (recommended or minimum) on insect distribution in a wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), and pea (Pisum sativum L.) rotation were studi[...]
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M. Rafi ; R. Zemetra ; S. Quisenberry | 1996Interaction between the Russian wheat aphid, Diuraphis noxia (Mordvilko), and the resistant wheat, Triticum aestivum L., plant introduction lines PI 137739, PI 140207, and PI 262660 and the susceptible wheat cultivar 'Stephens' were studied. D. [...]
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X. Ni ; S. Quisenberry ; T. Hengmoss ; J. Markwell ; G. Sarath ; R. Klucas ; F. Baxendale | 2001The impact of the leaf-chlorosis-elicitiug Russian wheat aphid, Diuraphis noxia (Mordvilko), and the nonchlorosis-eliciting bird cherry-oat aphid, Rhopalosiphum padi (L.), feeding on D. noxia-susceptible and -resistant cereals was examined durin[...]
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D. Schotzko ; S. Quisenberry | 1999The effects of tillage, location within a plot, and date of sampling on the spatial distribution of adult Sitona lineatus (L.) in peas, Pisum sativum L., were evaluated using geostatistical analyses. The geostatistics procedure uses spatial vari[...]
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F. Haile ; L. Higley ; X. Ni ; S. Quisenberry | 1999Plant tolerance to injury from insect herbivores has several advantages as a pest management approach. However, its use is limited because mechanisms conferring plant tolerance are not well understood. We hypothesize that plant physiological res[...]
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S. Quisenberry ; D. Schotzko | 1994The resistant wheat plant introductions PI 137739 and PI 262660 and the susceptible wheat (Triticum aestivum L.) cultivar 'Stephens' were used to determine the effects of varying Russian wheat aphid, Diuraphis noxia (Kuvdjumov), population densi[...]
