Download or read book Molecular Insight Into the Defense Response of Resistant and Susceptible Barley to the Russian Wheat Aphid Diuraphis Noxia Mordvilko written by Andrea R. Gutsche and published by . This book was released on 2007 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interactions Among Biological Control Cultural Control and Barley Resistance to the Russian Wheat Aphid Diuraphis Noxia Kurdjumov in Colorado Kansas and Nebraska written by Paola Andrea Sotelo-Cardona and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Russian wheat aphid, Diuraphis noxia (Kurdjumov) (Hemiptera: Aphididae) (RWA), is an important pest in the U.S. Western Plains, causing hundreds of millions of dollars of losses to wheat and barley production through reduced yields and insecticide application costs. The objectives of this research were to evaluate the performance of two RWA-resistant barley varieties planted approximately one month earlier than normal in experimental fields at Fort Collins, Colorado; Tribune, Kansas; and Sidney, Nebraska during 2007, 2008, and 2009. The experimental design was a split-plot design with two main plot treatments (early and normal planting dates), and four split plot treatments (barley varieties) that were randomized within each main treatment plot. The varieties included two RWA-barley resistant varieties, Sidney and Stoneham, and the susceptible variety, Otis, under thiamethoxam-protected and unprotected regimes. Sampling of RWA, other cereal aphids, and natural enemy populations was conducted on four dates from mid May through early July. RWA populations collected from early-planted plots (first week of March) were significantly lower than normal-planted plots in 2007-2009 at the Fort Collins, Colorado and Tribune, Kansas sites. In samples collected from early planting date plots, RWA-resistant varieties yielded RWA populations similar to those found on the insecticide-treated susceptible variety at both Fort Collins and Tribune. At the Sidney, Nebraska site, very low RWA populations were present and there were no differences between either planting date or varietal treatments. The combined effect of early planting and RWA-resistant varieties reduced RWA populations at the Fort Collins, Colorado site in all three years. Results were similar at the Tribune, Kansas site in 2007, but differences due to planting date or variety were not observed in 2008 or 2009. The lowest RWA populations occurred at the Sidney, Nebraska site, were independent of planting date and varietal treatments. The RWA-resistant barley varieties had no negative impact on populations of other cereal aphids compared to those found on the susceptible variety, Otis at any of the three research sites. The only treatment effective in reducing other cereal aphids was the insecticide, thiamethoxam. There was also no clear response of populations of other cereal aphids to different planting date. Neither the RWA-resistant barley varieties nor the systemic, short residual action insecticide treatment had adverse affects on the abundance of natural enemies.

Download or read book Development of Molecular Markers for Resistance to the Russian Wheat Aphid Diuraphis Noxia Mordvilko in Soft White Winter Wheat Triticum Aestivum L written by Todd Michael Linscott and published by . This book was released on 1999 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elucidation of Possible Virulence Factors Present in Russian Wheat Aphid Diuraphis Noxia Biotypes Saliva written by Rosetta Andrews Van Zyl and published by . This book was released on 2007 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular Mapping of Wheat Genes Expressing Resistance to the Russian Wheat Aphid Diuraphis Noxia Mordvilko Homoptera Aphididae written by Xuming Liu and published by . This book was released on 2001 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molecular and Genetic Basis of Resistance to Russian Wheat Aphid Diuraphis Noxia written by Vinod Sharma and published by . This book was released on 2005 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Damage Economic Injury Levels and Economic Threshold Levels for Russian Wheat Aphid RWA Diuraphis Noxia Mordvilko on Winter Barley in Wyoming written by Larry E. Bennett and published by . This book was released on 1990 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field Biology of Russian Wheat Aphid Diuraphis Noxia Mordvilko Homoptera Aphididae on Wheats Differing in Categories of Resistance written by Hassan Yahya Al-Ayedh and published by . This book was released on 2000 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Studies with Russian Wheat Aphid Diuraphis Noxia Mordvilko in PI 294994 Bread Wheat Triticum Aestivum L written by Ahmed A. Elsiddig and published by . This book was released on 1992 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Russian wheat aphid (RWA), Diuraphis noxia (Mordvilko), is a widely distributed species in western north America, and a major economic pest of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.). The objectives of this study were to : 1) determine the inheritance of seedling and adult plant resistances in a wheat line PI 294994 ; 2) establish whether greenhouse and field resistances were related ; 3) determine the effect of RWA infestation on the dry matter, grain yield, and harvest index in the crosses Moro/PI 294994 and Hyak/PI 294994 ; 4) determine whether there was a difference in the three traits between different genotypes due to RWA infestation ; and, 5) assess the degree of protection genetic resistance provided in the two crosses. The club wheat cultivars 'Moro' and 4Hyak' were crossed with PI 294994. Progenies from these two crosses were artificially infested with RWA in the field and the crosses were compared for their dry matter, grain yield, and harvest index. Plant reactions of F2 seedlings, F2 adult plants, and F3 seedlings indicated that both seedling and adult plant resistances are controlled by two genes with dominant and recessive mode of inheritance and that plant reactions in the field were the same as those in the greenhouse. Comparison of mean values of dry matter, grain yield, and harvest index showed that the three traits were affected by RWA infestation and genotype in both crosses. Resistant genotypes and noninfested population were comparable with respect to the three traits in Moro/PI 294994 but they were not in Hyak/PI 294994.

Download or read book Russian Wheat Aphid Diuraphis Noxia Mordvilko written by Keith S. Pike and published by . This book was released on 1988 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Russian Wheat Aphid Diuraphis Noxia Mordvilko on Wheat Triticum Aestivum L written by Melaku Girma and published by . This book was released on 1990 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Russian Wheat Aphid written by Michael John Brewer and published by . This book was released on 1995 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Sustained Russian Wheat Aphid Diuraphis Noxia Mordvilko Feeding on Leaf Blades of Wheat Triticum Aestivum L Cv Adamtas written by Babalwa Matsiliza and published by . This book was released on 2003 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Synopsis of Information on the Russian Wheat Aphid Diuraphis Noxia Mordwilko written by Richard Douglas Hughes and published by . This book was released on 1996 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Agronomic Practices to Reduce Russian Wheat Aphid Diuraphis Noxia Mordvilko Homoptera Aphididae Damage in Wheat written by Kurt John Kammerzell and published by . This book was released on 1992 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plant Resistance to Arthropods written by C. Michael Smith and published by Springer Science & Business Media. This book was released on 2006-01-16 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book synthesizes new information about the environmental advantages of plant resistance, transgenic resistance, the molecular bases of resistance, and the use of molecular markers to map resistance genes. Readers are presented in-depth descriptions of techniques to quantify resistance, factors affecting resistance expression, and the deployment of resistance genes. New information about gene-for-gene interactions between resistant plants and arthropod biotypes is discussed along with the recent examples of using arthropod resistant plants in integrated pest management systems.

Download or read book Sucking Pests of Crops written by Omkar and published by Springer Nature. This book was released on 2020-10-12 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sucking pests are most notorious group of pests for agricultural crops. Unlike most pests with chewing mouth parts, sucking pests cause more severe damage to the crops and are complex to get identified until advanced stages of infection. Not only is this late detection detrimental to their effective control, sucking pests also often cause fungal growth and virus transmission. The book emphasizes on sucking pests of most major crops of India. It aims to reflect Indian scenario before the international readership. This book complies comprehensive information on sucking pests of crops and brings the attention of the readers to this multiple damage causing insect complex. The chapters are contributed by highly experienced Indigenous experts from Universities & ICAR institutes, and book collates useful content for students and young researchers in plant pathology, entomology and agriculture.