Thị Trấn Bình Gia, Vietnam
Thị Trấn Bình Gia, Vietnam

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Jaenicke H.,Burghof 26 | Ghose N.,Winrock International India WII | Hung N.Q.,Fruit and Vegetable Research Institute FAVRI | The Anh D.,Center for Agrarian Systems Research and Development | Daniel J.N.,BAIF Development Research Foundation
Acta Horticulturae | Year: 2013

The 'Coalition to Diversify Income through Underused Crops' sought to improve access to market for resource poor farmers in India and Vietnam. Project activities included setting up farmer associations; training activities in various aspects of crop production, nursery management, post harvest handling and marketing; assistance with setting up community germplasm orchards and several events for farmer-to-farmer knowledge transfer. Early results show increased household income from better knowledge about production and use of a variety of crops and from better market opportunities thanks to new processed products, improved crop quality, certification and market penetration. The socio-economic background of the farmers in the project locations in India and in Vietnam determined to a large extent how far a product could be pushed along the market chain. Whereas diversification of crop production and improved household nutrition was more prominent in most of the (rural) Indian sites, improved market penetration of selected semi-industrialised crops was in the focus of the (peri-urban) Vietnamese sites.

Truong H.T.H.,Hue University | Kim S.,National Institute of Horticultural & Herbal Science NIHHS | Tran H.N.,National Institute of Horticultural & Herbal Science NIHHS | Tran H.N.,Fruit and Vegetable Research Institute FAVRI | And 3 more authors.
Horticulture Environment and Biotechnology | Year: 2015

We report the development of a codominant sequence characterized amplified region (SCAR) marker linked to bacterial wilt resistance in tomato line Hawaii 7996. Bulked segregant analysis was employed for rapid identification of RAPD markers linked to resistance genes. Genomic DNA from six resistant F9 recombinant inbred lines (RILs) and six susceptible F9 RILs, which derived from a cross between S. lycopersicum Hawaii 7996 (resistant parent) and S. pimpinellifolium WVa 700 (susceptible parent) were pooled in to an R-pool and an S-pool, respectively. A total of 800 RAPD primers were screened and only six primers (UBC#176, 205, 287, 317, 350, and 676) showed polymorphism between R- and S- pools. Of these, only two markers UBC#176 and 317 revealed a 100% linkage in the individual plants comprising the contrasting bulks. Of these, the marker UBC#176 was converted into a codominant SCAR marker and designated as SCU176-534. The marker SCU176-534 was confirmed by genotyping the individual of the R- and S- pools and gave the same result as UBC#176. When the marker SCU176-534 was further validated for association with resistance and its potential for maker-assisted selection (MAS) in 92 tomato lines and cultivars, the results showed that none of these carries the resistance gene. Thus, SCAR marker SCU176-534 can be used in early selection of resistant lines when Hawaii 7996 is used as a parent in a breeding program. © 2015, Korean Society for Horticultural Science and Springer-Verlag GmbH.

Truong H.T.H.,South Korean National Institute of Animal Science | Truong H.T.H.,Hue University | Tran H.N.,South Korean National Institute of Animal Science | Tran H.N.,Fruit and Vegetable Research Institute FAVRI | And 3 more authors.
European Journal of Plant Pathology | Year: 2013

Random amplified polymorphism DNA (RAPD) and bulk segregant analysis (BSA) approaches were used to characterize the molecular marker linked to the Phytophthora infestans resistance gene Ph-3 in tomato. A total of 800 RAPD primers were screened. One RAPD marker UBC#602 was identified to be tightly linked to the Ph-3 gene. The marker was successfully converted into a co-dominant sequence characterized amplified region (SCAR) marker. The SCAR marker SCU602 was used to analyze 96 F2 progenies and fitted the expected 1:2:1 Mendelian segregation ratio. Forty one tomato inbred lines were screened using the SCAR marker in comparison with a reference marker linked to the Ph-3 gene and both markers gave the same results. SCU602 was further validated for association to resistance and its potential in MAS in 72 tomato lines and cultivars. The marker identified three genotypes harbouring the resistance allele. This SCAR marker can be used in breeding programs for the selection of the Ph-3 gene for Phytophthora infestans resistance. © 2013 KNPV.

Wang H.,Beijing Institute of Technology | Wang H.,CIRAD - Agricultural Research for Development | Moustier P.,CIRAD - Agricultural Research for Development | Loc N.T.T.,Fruit and Vegetable Research Institute FAVRI
Food Policy | Year: 2014

The paper investigates the respective impacts on incomes of contractual arrangements, direct sales and spot marketing for "safe vegetable" farmers in northern Vietnam. It is based on a survey of 137 peri-urban vegetable farmers that was analyzed using different econometric methods to correct selection biases. Direct sales and contractual arrangements have a significant positive impact on income compared to spot marketing. Contracts have less impact on income compared to direct sales. It is recommended that policies be formulated to stimulate direct dealings between farmers and consumers, which enhance consumer confidence in terms of quality and translate into higher farmer income than anonymous exchanges or contracts. © 2014.

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