Plant Pathology Commons^™

Breeding For Resistance In California Strawberry To Verticillium Dahliae, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Since 1930 the University of California, Davis, has been developing strawberry cultivars that are adapted to the agricultural industry and regional farms. Developing cultivars that require fewer inputs are of significant economic importance in agronomy. Developing a crop resistant to a disease is beneficial for horticulturists since less labor and chemicals are needed for a high yield.⁶

In commercial strawberry cultivars, complete resistance to V. dahlia is extremely rare. The majority of Californian strawberry cultivars are highly susceptible to it.² Over the last 18 years of plant breeding for strawberry cultivars with a high degree of resistance and …

Prevalence Of Copper Resistance Among Foliar Bacterial Pathogens Of Tomato In Tennessee, Jonathon Thomas Mixon

Masters Theses

Foliar bacterial diseases are among the most important diseases of tomato. Bacterial spot is caused by four species: Xanthomonas euvesicatoria, X. vesicatoria, X. perforans, and X. gardneri, hereafter referred to as Xanthomonas spp. Bacterial speck is caused by Pseudomonas syringae pv. tomato and bacterial canker is caused by Clavibacter michiganensis subsp. michiganensis. Fixed copper products are relied upon extensively for control, due to a lack of effective and economical alternatives. Copper resistance in bacterial spot and speck pathogens has been reported worldwide. Copper resistance quite likely exists in Tennessee, but the extent has never been …

Crop Updates 2007 - Lupins, Pulses And Oilseeds, Mark Seymour, Jacinta Falconer, Ian Pritchard, Rodger Beermier, Wayne Parker, Martin Harries, Kedar Adhikari, Geoff Thomas, Peter White, Bevan Burichell, Mike Baker, Bob French, Jo Walker, Laurie Maiolo, Leigh Smith, Mark Sweetingham, Lorne Mills, Harmohinder Dhammu, Ben Tang, Qifu Ma, Zed Rengel, Bill Bowden, Ross Brennan, Reg Lunt, Tim Hilder, Tim Maling, A. Diggle, D. Thackray, R. A.C. Jones, K. H.M. Siddique, Vijay Jayasena, Leonardus Kardono, Ken Quail, Ranil Coorey, Hannah Williams, Don Elani Jayawardena, Kerry Regan, Rod Hunter, Tanveer Khan, Jenny Garlinge, Heather Clarke, W. Macleod, S. Morgan, A. Harris, Alan Meldrum, Helen Bowers, A. Bakr, Phillip Chambers, Chris Veitch, Tony Leonforte, Pam Burgess, Leanne Young, Brenda Coutts, Donna O'Keefe, Rhonda Pearce, Monica Kehoe, Terri Jasper, Tim Pope, Michael Materne, Ping Si, Mike Walsh, H. H. T. Phan, S. R. Ellwood, J. Hane, A. Williams, R. Ford, S. Thomas, R. Oliver, Katie Robinson, Mohammad Amjad, Graham Walton, Pat Fels, Andy Sutherland, Imma Farre, Michael Robertson, Senthold Asseng3, Ravjit Khangura, Moin Salam

Crop Updates

This session covers forty eight papers from different authors:

2006 REGIONAL ROUNDUP

1. South east agricultural region, Mark Seymour¹ and Jacinta Falconer², ¹Department of Agriculture and Food, ²Cooperative Bulk Handling Group

2. Central agricultural region, Ian Pritchard, Department of Agriculture and Food

3. Great Southern and Lakes region, Rodger Beermier, Department of Agriculture and Food

4. Northern agricultural region, Wayne Parker and Martin Harries, Department of Agriculture and Food

LUPINS

5. Development of anthracnose resistant and early flowering albus lupins (Lupinus albus L) in Western Australia, Kedar Adhikari and Geoff Thomas, Department of …

The Nature Of Resistance In Alfalfa To Wilt (Aplanobacter Insidiosum L. Mc.), George L. Peltier, F. R. Schroeder

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Alfalfa wilt was first discovered in 1924 in southern Wisconsin and northern Illinois. The causal organism, Aplanobacter insidiosum, was later described by McCulloch. Since that time wilt has been reported from most of the alfalfa-growing sections of the United States and in some states it has been responsible for a rapid decrease in the acreage of alfalfa. During the past three years a number of investigators have found that certain alfalfas are somewhat resistant to wilt, whereas others are very susceptible. At the Nebraska station the results to date indicate that all common and most variegated alfalfas are very …

Breeding Winter Wheat For Resistance To Stinking Smut (Tilletia Levis And Tilletia Tritici), T. A. Kiesselbach, Arthur Anderson

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Several productive lines of hard red winter wheat which are highly resistant to both species of stinking smut (Tilletia levis and T. tritici) have been isolated from the Turkey variety. Artificial-smut and stem-rust epidemics and controlled freezing have been found useful supplements to field-performance tests. Differential reactions of the new Turkey selections and a number of hybrid selections and established resistant varieties to collections of bunt from a number of states give definite evidence of the occurrence of mild and virulent physiologic forms of both species. Certain selections have proved very resistant to some of the smut collections and …