2024 APSA Seed Technology Webinar - Session 2 11 July 2024 / 2:00 pm - 4:00 pm (GMT+7)

Hosted by APSA Standing Committee on Seed Technology, the webinar series on Seed Technology is organized exclusively for APSA members only. This year is the fourth year APSA will be holding this webinar series, and will focus on such topics as Seed Extraction, Post-Harvest Handling, Seed Health Testing, Seed Storage & Seed Packaging.

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2024 APSA Seed Technology Webinar - Session 2
11 July 2024 / 2:00 pm - 4:00 pm (GMT+7)

Seed Health Testing

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Speaker Profile & Abstract

Mr. Ruud Barnhoorn
Researcher vegetable seed pathology, the Chair of the ISTA Seed Health Committee
ISF ISHI-Veg Chair of the Method Validation Group , Naktuinbouw R&D department, The Netherlands

Profile
Ruud Barnhoorn is a researcher in the Naktuinbouw Research and Development department with specialization in the field of (vegetable) seed health. His daily work focuses on the development and validation of seed health protocols. Ultimate goal is then the transfer of the validated seed tests to the routine laboratory. Currently he is investigating the possibility to implement molecular detection (including HTS) to complement or even replace classical seed health methods depending on recognition of pathogen typical morphological features.

Abstract
Classical and molecular techniques for detecting of pathogens in seeds of vegetable and field crops 
Healthy seeds are essential for the production of sufficient food for this world. Several pathogens are seed transmissible and contaminated seeds could act as a primary inoculum source for rapidly progressing and devastating diseases in the field or in greenhouses. Different seed health testing methods have been developed and validated in the past to minimise the chance that disease is introduced by contaminated seeds. With classic methods such as dilution plating on semi-selective media, ELISA and grow outs the quality of seeds is determined. More recently molecular based methods have been implemented to complement or replace some of the classic methods. The advantages and disadvantages of the different seed health methods will be provided and some new developments and applications such as High Throughput Sequencing will be discussed.  

Dr. M. Krishna Reddy
Former Principal Scientist and Head, Division of Crop Protection
ICAR-Indian Institute of Horticultural Research

Profile
Currently National Consultant Virologist, Asian Development Bank for Clean Plant Programm. He has provided leadership to the research, extension, and training programs in plant pathology in horticultural crops and has 35 years of research experience on plant viruses in horticultural crops. As a plant virologist, worked on viruses diseases of fruits, vegetables, and ornamental crops. His main research interests include molecular characterization and diagnosis of plant viruses, viroids, phytoplasma etc, host-pathogen interaction, epidemiology and management of viral diseases of horticultural crops; development of environmentally friendly and sustainable IPM strategies for reducing the impact of viral diseases; development of virus-resistant varieties/hybrids in vegetable crops; capacity building in SAU’s and Agricultural departments and technology transfer. He has guided six M.Sc. (Ag) and 10 Ph. D. students, published 180 research papers in International and national journals. He is recipient of several national and international recognitions such as Most Influential Plant Pathologist in the Asia-Pacific (2021) awarded by Asia and Pacific seed association (APSA), Bangkok, Thailand, ICAR award for Outstanding Interdisciplinary Team Research in Agriculture & Allied Sciences (2013-14), ICAR Award for outstanding Interdisciplinary Team Research for the Biennium 2007-2008, Prof. B.B. Mundkur memorial lecture award (2015). Indian Phytopathological Society, New Delhi, Dr. Harbhajan Singh Memorial award for best paper published in vegetable Science, (2013) 39(1):16-20. IIHR Foundation Day special award of Excellence for development of triple disease resistant tomato hybrids (2012), ICAR-IIHR, Bangalore, United Nations University Fellowship (1998), United Nations University, Tokyo, Japan,  Prof. M. J. Narashimhan academic merit award (1990). Indian Phytopathological Society, New Delhi.  He is also a member of several national and international committees such as Member of International committee on Taxonomy of viruses- Bromoviridae study group, QRT member for ICAR-National Institute of Biotic stress  Management, Raipur, Research Advisory Council (RAC) member of ICAR-Central Citrus Research Institute, Nagpur, Maharashtra, ICAR-Central Potato Research Institute, Shimla, Himachal Pradesh, RAC member of ICAR-CTRI, Rajahmundry, Andhra Pradesh, Member of Research advisory & management of Rubber Research institute of India, Kottayam, Kerala (2010-2014, Member of Department of Biotechnology (DBT), Government of India, Accreditation Panel of National Certification System for Tissue Culture Raised Plants (NCS-TCP) and Member of Research advisory committee of Merck Bioscience India Ltd., Bangalore,  Karnataka (2010-2013).

Abstract
Asian Seedborne pathogens, disinfection and seed treatment in the management of vegetable crop diseases
Seed is a small embryonic plant which is an efficient means of introducing plant pathogens into a new area as well as providing a means of their survival from one cropping season to another. Seed health is a well-recognized factor in the modern agricultural science for desired plant population and good harvest. Seedborne pathogens of vegetables, including viruses, viroids, bacteria, or fungi are responsible for the re-emergence of diseases of the past, as well as emerging epidemics in vegetable crop ecosystem.  Seed-borne diseases not only damage seedlings, and spread diseases during the germination process, but also cause poisoning to humans and animals. The planting and disease prevention of seeds are directly related to the yield and quality of crops, and the early prevention and control of seed diseases comprises an important management measure. These methods are somewhat traditional, and their effectiveness is not very good, requiring us to combine some emerging technologies when formulating detection and management strategies. The detection methods used for different types of pathogens also vary. For the prevention and control of seed borne diseases, appropriate methods should also be adopted, such as physical methods, chemical methods, plasma treatment and biological methods. They can be used alone or in combination to achieve the purpose of disease prevention and strategies for sustainable disease management will be discussed.

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