[Objective]The study was carried out for providing good method to detect ratoon stunting disease（RSD）in virus-free seedcane of Saccharum officinarum.[Method]PCR method was used for the detection of RSD in virus-free...[Objective]The study was carried out for providing good method to detect ratoon stunting disease（RSD）in virus-free seedcane of Saccharum officinarum.[Method]PCR method was used for the detection of RSD in virus-free seedcane of sugarcane.[Result]During the different growth stages of healthy virus-free seedling including proliferation stage,rooting stage,sand culture stage and temporary planting stage,the RSD detection results were negative.PCR detection sensitivity in the present study showed that PCR could detect RSD pathogen in the solution with bacterium concentration 10-3.[Conclusion]PCR method showed a good specificity and higher sensitivity,so it was suitable for the batch detection in the production of healthy virus-free seedlings of sugarcane.展开更多
This paper aims to calculate Argentinean consumers＇ willingness to pay （WTP） for organic fresh chicken in the domestic market, by applying the Contingent Valuation approach and with a view to providing some useful ...This paper aims to calculate Argentinean consumers＇ willingness to pay （WTP） for organic fresh chicken in the domestic market, by applying the Contingent Valuation approach and with a view to providing some useful insights for promoting organic chicken production and consumption in Argentina. A binomial logit model was estimated using data from a consumer survey conducted in Buenos Aires City, Argentina. Willingness to pay is explained by the consumption of organic products, health risk perceptions, concerns about production processes and also regulation issues, and label reading. The WTP calculation reveals a mean value of 21.4%/kg and a median value of 19%/kg. These results indicate that organic chicken is positively valued by consumers. In fact, it provides the nutritional and product origin information that buyers require and they consider it a safer option than conventional chicken.展开更多
基金Supported by Basic Research Found of Guangxi Sugarcane Institute(G2009006)~~
文摘[Objective]The study was carried out for providing good method to detect ratoon stunting disease（RSD）in virus-free seedcane of Saccharum officinarum.[Method]PCR method was used for the detection of RSD in virus-free seedcane of sugarcane.[Result]During the different growth stages of healthy virus-free seedling including proliferation stage,rooting stage,sand culture stage and temporary planting stage,the RSD detection results were negative.PCR detection sensitivity in the present study showed that PCR could detect RSD pathogen in the solution with bacterium concentration 10-3.[Conclusion]PCR method showed a good specificity and higher sensitivity,so it was suitable for the batch detection in the production of healthy virus-free seedlings of sugarcane.
文摘This paper aims to calculate Argentinean consumers＇ willingness to pay （WTP） for organic fresh chicken in the domestic market, by applying the Contingent Valuation approach and with a view to providing some useful insights for promoting organic chicken production and consumption in Argentina. A binomial logit model was estimated using data from a consumer survey conducted in Buenos Aires City, Argentina. Willingness to pay is explained by the consumption of organic products, health risk perceptions, concerns about production processes and also regulation issues, and label reading. The WTP calculation reveals a mean value of 21.4%/kg and a median value of 19%/kg. These results indicate that organic chicken is positively valued by consumers. In fact, it provides the nutritional and product origin information that buyers require and they consider it a safer option than conventional chicken.
