APSA is happy to announce a brand new webinar series consisting of 6 sessions covering Cucurbit crops in Asia and Pacific Region (Watermelon, Melon, Bitter gourd, Cucumber, Pumpkin & Squash and other gourds). Each session is to be held on Friday each month from July to December 2022 at 14.00 - 16.00 hrs Bangkok time (ICT/GMT+7).
| TIME (GMT+7) | AGENDA |
| 14.00 – 14.05 |
Opening of the Webinar |
| 14.05 – 14.10 |
New variety releases or endorsements |
| 14.10 – 14.35 |
“Occurrence and status of seedborne viruses infecting cucurbit in Indonesia” |
| 14.35 – 14.45 |
Discussion and Q&A Session |
| 14.45 – 15.10 |
“Breeding for climate resilient cucumber” |
| 15.10 – 15.20 |
Discussion and Q&A Session |
| 15.20 – 15.45 |
“Genetic basis of downy mildew resistances in cucumber” |
| 15.45 – 15.55 |
Discussion and Q&A Session |
| 15.55 – 16.00 |
Closing remarks |
Dr Sri Hendrastuti Hidayat
Professor of phytopathology / plant virology, expert in horticultural crops’ diseases|
Bogor Agricultural University, Indonesia
Profile:
Prof. Sri Hendrastuti Hidayat is based at IPB University in Bogor, Indonesia. She received her PhD degree from University of Wisconsin, Madison, USA and since then she has worked in the area of plant pathology. Most recently she is working on viral diseases affecting horticultural crops including banana, papaya, chilli pepper, garlic and shallot. She teaches training programs and many courses for undergraduate and postgraduate students at Department of Plant Protection, Faculty of Agriculture. She is actively engaged in international research collaborations, among others with University of Queensland-Australia, World Vegetable Research-Taiwan, Washington State University-USA and Sungkyunkwan University-South Korea
Dr Tusar K Behera
Director
Indian Institute of Vegetable Research, Varanasi, India
Profile:
Born at village Brahmapur, Dist. Balasore, Odisha and graduated from OUAT-Bhubaneswar, Odisha and Ph. D. from Indian Agricultural Research Institute, New Delhi and Post-Doctoral Fellowship programme at University of Wisconsin, USA. Presently he is working as the Director, ICAR-Indian Institute of Vegetable Research. Before joining as Director, he worked as scientist to principal scientist in Division of Vegetable Science, ICAR-Indian Agricultural Research Institute, New Delhi. He also served as the Professor in the Discipline of Vegetable Science, P G School, IARI and Nodal Officer, ICAR-IARI-Jharkhand, Hazaribag.
Dr. Yiqun Weng
Research Geneticist, USDA-ARS, Vegetable Crops Research Unit, Horticulture Department
University of Wisconsin, USA
Profile:
Dr. Yiqun Weng is a Research Geneticist in the Vegetable Crops Research Unit of USDA-ARS, and Professor, Horticulture Department, University of Wisconsin Madison. He is the principal investigator leading the Cucumber Improvement Program aiming to understand the genetic basis of traits important for growers and customers and to develop enhanced germplasm using classical and biotechnological approaches. Current research interests in his program include: 1) Developing genetic and genomic resources and molecular tools to accelerate traditional cucumber breeding. 2) Exploring and transferring useful genes in cucumber relatives. 3) Understanding chromosome evolution, domestication, and selection during cucumber crop evolution.
Abstract:
Genetic Basis of Downy Mildew Resistance in Cucumber
Yiqun Weng, USDA-ARS Vegetable Crops research Unit, Horticulture Department, University of Wisconsin, Madison, WI 53706, USA
The downy mildew (DM) caused by the obligate biotrophic oomycete Pseudoperonospora cubensis is among the most devastating foliage diseases of cucumber and other cucurbits worldwide. At present, control of DM in cucumber production in the US relies heavily on spray of fungicides, which reduces profit margin and is of environmental concern. The DM pathogen populations are prone to develop resistance to fungicides. Deployment of host resistance is a critical component of integrated pest management of DM. Over the last decade, extensive studies on the genetic basis of DM resistance have revealed complex and diverse genetic and molecular mechanisms of DM resistances in cucumber. In this talk, I will give a brief historical review of genetic studies of DM resistance and summarize genes and quantitative trait loci (QTL) identified so far in cucumber. I will then present recent work in fine mapping and cloning of major-effect QTL in several well characterized resistance sources including WI2757, PI 197087, PI 197088, and PI 330628 (WI7120) with emphasis on dm1 (staygreen), the composite dm4.1 locus (four subQTL), dm5.2, and dm5.3. I will also discuss the use of crop wild relatives (CWR) in cucumber breeding for DM resistance.
| COUNTRIES | TIME ZONES | EVENT TIME |
| Iowa, USA | UTC -05:00 | 02:00 – 04:00 |
| Israel, Jordan, Lebanon, Syria | UTC +02:00 | 10:00 - 12:00 |
| Kuwait, Turkey | UTC +03:00 | 11:00 - 13:00 |
| Iran | UTC +03:30 | 11:30 – 13:30 |
| Pakistan | UTC +05:00 | 12:00 - 14:00 |
| India, Sri Lanka | UTC +05:30 | 12:30 – 14:30 |
| Nepal | UTC +05:45 | 12:45 – 14:45 |
| Bangladesh, Krygyztan | UTC +06:00 | 13:00 - 15:00 |
| Myanmar | UTC +06:30 | 13:30 - 15:30 |
| Cambodia, Indonesia, Laos, Thailand, Vietnam | UTC +07:00 | 14:00 - 16:00 |
| China, Chinese Taipei, Hong Kong-China, Malaysia, Philippines, Singapore | UTC +08:00 | 15:00 - 17:00 |
| Japan, South Korea | UTC +09:00 | 16:00 - 18:00 |
| Australia (Canberra) | UTC +11:00 | 17:00 - 19:00 |
| New Zealand (Wellington) | UTC +13:00 | 19:00 - 21:00 |