Trends and expectations for research and technology in weed science in Thailand     

Sombat Chinawong  Rungsit Suwanketnikom 《Weed Biology and Management》2001,1(1):25-27

There are many possible ways to improve the economic crisis in Thailand, and it is agreed that development of agricultural production is ideal for improving the economic situation in an agricultural country such as Thailand. A strategic plan for agricultural and agro‐industry research is included in the national research agenda and can be classified into nine groups covering different research areas. Most research is based on the agricultural production of four main product groups: (i) crops; (ii) aquatic animals/plants and fisheries products; (iii) poultry, livestock and animal products; and (iv) forest resources. Trends in research and development in weed management for crop production will continue to support the food demands and the development of efficient production of quality products.  相似文献   

Pathogenicity,host range and activities of a secondary metabolite and enzyme from Myrothecium roridum on water hyacinth from Thailand          下载免费PDF全文

Orawan Piyaboon  Ratchapol Pawongrat  Jintana Unartngam  Sombat Chinawong  Arm Unartngam 《Weed Biology and Management》2016,16(3):132-144

Leaf blight disease of water hyacinth was observed and collected from different geographical areas of Thailand. The disease is caused by a fungal pathogen that was identified as Myrothecium roridum by using its morphological characteristics. The most effective fungal strains were evaluated for pathogenicity on water hyacinth under greenhouse and natural conditions. Myrothecium roridum isolate, Kamphaeng Sean Campus (KKFC) 448, was found to be the most virulent. Different fungal formulations were evaluated for their level of control of water hyacinth. The results showed that spore suspensions with 10% palm oil or 1% Tween 20 caused a higher level of disease severity, compared to spores applied in water alone. The host range of KKFC 448 was evaluated by using 77 plant species that belong to 40 plant families. The fungus did not cause disease on 74 economically important plants but did produce disease signs on water hyacinth and two other aquatic weeds, duckweed and water lettuce. Leaf blight occurs on water hyacinth leaves after being treated with crude extracts of M. roridum and it was indicated that secondary metabolites were released from the fungal mycelia. Myrothecium roridum that was grown on boiled paddy rice produced β‐1,4‐exoglucanase, β‐1,4‐endoglucanase, β‐glucosidase, xylanase and pectinase more than Mroridum that was grown on potato dextrose agar. The results indicated that M. roridum is a pathogen of water hyacinth and the fungus is capable of producing different enzymatic activities on potato dextrose agar and boiled paddy rice, which might be important for infection.  相似文献