Author: Fazal RahmanPublisher:
ISBN:
Category : Wheat
Languages : en
Pages : 104
Book Description
Tolerance Studies to Wheat Streak Mosaic Virus in Winter and Spring Wheats
Author: Fazal RahmanInheritance of Tolerance to Wheat Streak Mosaic Virus in an Advanced Spring Wheat (Triticum Aestivum L) Line BW155, and Combining BW155-derived Tolerance and Wsm1 Resistance
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Wheat streak mosaic (WSM) caused by WSM virus (WSMV) is a serious disease of wheat which cannot be easily controlled using cultural practices or chemicals. Tolerance to WSMV exists in hexaploid spring wheat ('Triticum aestivum ' L) germplasm. BW155 is an advanced spring bread wheat line with tolerance to WSMV. Canada Western Red Spring (CWRS) wheat cultivar, AC Elsa is moderately susceptible, while AC Barrie and Laura are highly susceptible to WSMV infection. Wsm1, a gene for resistance to WSMV has been transferred into winter wheat from 'Agropyron intermedium'. The line 7166 is resistant to WSMV and carries the Wsm1 resistance gene. Both resistance and tolerance to WSMV contribute to the host's good performance. The overall objectives of this thesis were: (i) to determine the mode of inheritance of WSMV tolerance in BW155, and (ii) to combine BW155-derived tolerance and Wsm1 resistance derived from 7166. (Abstract shortened by UMI.).
Inheritance of Tolerance to Wheat Streak Mosaic Virus in an Advanced Spring Wheat (Triticum Aestivum L) Line BW155, and Combining BW155-derived Tolerance and Wsm1 Resistance
Author: Evaluation of Susceptibility to Wheat Streak Mosaic Virus Among Small Grains and Alternative Hosts in the Great Plains
Author: Dai ItoPublisher:
ISBN:
Category : Wheat streak mosaic virus
Languages : en
Pages : 218
Book Description
Wheat streak mosaic virus (WSMV), endemic in small grains production areas of the Great Plains, causes yield losses of wheat 2 to 5% annually. Yield loss in individual fields can reach 100%. Control relies on cultural practices to control the vector, the wheat curl mite (Aceria tosichella Keifer, WCM), and the use of resistant or tolerant varieties. WSMV and WCM depend on living tissue for survival and reproduction, including common grassy weeds. Little is known about the relative importance of these weeds as alternative hosts of WSMV. The purpose of these studies was to evaluate the risk of infection with WSMV in commonly grown wheat varieties and various grassy weed species, information useful to understanding WSMV epidemiology and control. Winter wheat, spring wheat and barley varieties in Montana were evaluated in the field by measuring the effect of fall vs. spring inoculation and variety on incidence, symptom severity, and yield components. Winter wheat varieties from five states, and spring wheat and barley varieties from Montana were tested for incidence and absorbance in greenhouse. Fall-inoculated winter wheat had less effect of WSMV inoculation compared to spring-inoculated winter wheat. Yields of spring wheat varieties were largely reduced by WSMV inoculation. There was no correlation between yield and incidence or symptom severity. In greenhouse studies, the highest incidence was observed in varieties from Idaho and Nebraska, whereas the highest relative absorbance was observed in varieties from Montana. In 2008 and 2009, surveys of common grassy weeds were conducted. Grass species from croplands in six states were selected and mechanically inoculated to determine the susceptibility to WSMV. Grassy weeds were also evaluated as a source of WSMV by measuring transmission efficiency with virulifeous WCM. Bromus tectorum was the most prevalent grassy weed and the most frequent viral host. Aegilops cylindrica, and Avena fatua had the highest incidence and relative absorbance. There were no differences in the susceptibility of grass species to WSMV by their state of origin. WCM transmission study indicated infected grass species had lower transmission efficiency than from infected wheat. These studies will benefit producers in Montana to assess their risk of WSMV based on variety selection and the presence of grassy weeds.
Wheat Streak Mosaic Virus Resistance Studies in Winter Wheat
Author: Frederic HakizimanaPublisher:
ISBN:
Category : Wheat streak mosaic virus
Languages : en
Pages : 258
Book Description
Comparative Studies on the Reaction of Some Winter Wheats to Wheat Streak Mosaic Virus
Author: Aruni ChantarasnitAn Analysis of Agronomic Characteristics and Reaction to Wheat Streak Mosaic Virus in Four Hard Red Winter Wheat Crosses
Author: Stephen James SebestaPublisher:
ISBN:
Category :
Languages : en
Pages : 90
Book Description
The Plant Disease Bulletin
Author: The Plant Disease Reporter
Author: Disease Resistance in Wheat
Author: Indu SharmaPublisher: CABI
ISBN: 1845938186
Category : Technology & Engineering
Languages : en
Pages : 334
Book Description
Disease resistance is one of the major factors that can be improved to sustain yield potential in cultivated crops. This book looks at disease resistance in wheat, concentrating on all the economically important diseases -- their economic impact and geographical spread, breeding for resistance, pathogen variability, resistance mechanisms and recent advances made on resistance genes. Newer strategies for identifying resistance genes and identify resistance mechanisms are discussed, including cloning, gene transfer and the use of genetically modified plants.