[Objective]The paper was to clarify the occurrence of sugarcane ratoon stunting disease(RSD)in Hainan sugarcane-growing areas.[Method]In 2019,270 samples of sugarcane leaves were collected from six main sugarcane-grow...[Objective]The paper was to clarify the occurrence of sugarcane ratoon stunting disease(RSD)in Hainan sugarcane-growing areas.[Method]In 2019,270 samples of sugarcane leaves were collected from six main sugarcane-growing areas in Hainan Province,and RSD was detected by PCR assay with specific primers.[Result]RSD was detected out in 41 out of 270 sugarcane samples,with an average detection rate of15.19%.The detection rates of RSD were different in six sugarcane-growing areas;the detection rate of RSD in Danzhou sugarcane-growing area was the highest of 22.00%;the detection rate of RSD in Lingao sugarcane-growing area was the lowest of 9.26%.RSD was detected out in 8 out of10 main sugarcane cultivars,among which Xintaitang 22 suffered the heaviest damage,with the positive detection rate of 45.83%;RSD had not been detected out in Zhongtang 1 and Zhongtang 2,while the positive detection rates of RSD in the remaining seven sugarcane cultivars were10.00%-31.25%.[Conclusion]RSD commonly occurs in Hainan sugarcane-growing areas.The research results provide a basis for scientific prevention and control of RSD and promotion and application of healthy virus-free sugarcane seedlings.展开更多
This study was to develop the real-time fluorescence quantitative PCR technique for detecting the ratoon stunting disease （RSD） in virus-free seedcane seedlings. Healthy tissue culture seedlings were obtained from s...This study was to develop the real-time fluorescence quantitative PCR technique for detecting the ratoon stunting disease （RSD） in virus-free seedcane seedlings. Healthy tissue culture seedlings were obtained from six plants of sugarcane ROC22, which had been confirmed RSD-positive by detecting the sugarcane juice, by employing the sugarcane seedlings production protocol. Real-time fluorescence quantitative PCR was used to detect RSD pathogens in tissue culture sam- pies. The results showed that target fragment of RSD pathogens was not found in all 10 samples in real-time fluorescence quantitative PCR, with the Ct values of 37 - 39. The healthy tissue culture sugarcane seedlings do not carry RSD pathogens, indicating that adopting healthy seedcane seedlings production technique could thoroughly get rid of RSD pathogens.展开更多
为了解不同甘蔗品种的甘蔗宿根矮化病(RSD)感病情况,采用PCR检测方法,对13个甘蔗品种进行RSD感病率检测。结果显示,在所检测的13个甘蔗品种中,不同品种感病率有所差异,其中所检测的2个CP系列感病率最低。同时,利用MSC培养基从感染RSD的...为了解不同甘蔗品种的甘蔗宿根矮化病(RSD)感病情况,采用PCR检测方法,对13个甘蔗品种进行RSD感病率检测。结果显示,在所检测的13个甘蔗品种中,不同品种感病率有所差异,其中所检测的2个CP系列感病率最低。同时,利用MSC培养基从感染RSD的甘蔗蔗汁中分离培养到一种生长缓慢、菌落颜色为乳白色的杆状细菌。根据菌落形态、显微镜观察,以及特异引物和16S r DNA扩增多种方法鉴定,最终确认所分离到的杆状细菌即为甘蔗宿根矮化病病原菌(Leifsonia xyli subsp.xyli)。展开更多
基金Supported by National Natural Science Foundation of China(31771865)National Sugar Industry Technology System"Scientists for Prevention and Control of Sugarcane Virus Diseases"(CARS-170301)。
文摘[Objective]The paper was to clarify the occurrence of sugarcane ratoon stunting disease(RSD)in Hainan sugarcane-growing areas.[Method]In 2019,270 samples of sugarcane leaves were collected from six main sugarcane-growing areas in Hainan Province,and RSD was detected by PCR assay with specific primers.[Result]RSD was detected out in 41 out of 270 sugarcane samples,with an average detection rate of15.19%.The detection rates of RSD were different in six sugarcane-growing areas;the detection rate of RSD in Danzhou sugarcane-growing area was the highest of 22.00%;the detection rate of RSD in Lingao sugarcane-growing area was the lowest of 9.26%.RSD was detected out in 8 out of10 main sugarcane cultivars,among which Xintaitang 22 suffered the heaviest damage,with the positive detection rate of 45.83%;RSD had not been detected out in Zhongtang 1 and Zhongtang 2,while the positive detection rates of RSD in the remaining seven sugarcane cultivars were10.00%-31.25%.[Conclusion]RSD commonly occurs in Hainan sugarcane-growing areas.The research results provide a basis for scientific prevention and control of RSD and promotion and application of healthy virus-free sugarcane seedlings.
基金Supported by Special Funds for Basic Scientific Research of Guangxi Sugarcane Research Institute(G2009006,G2010006,G2009015)Sci-tech Research and Development Program of Guangxi Academy of Agricultural Sciences(200805)
文摘This study was to develop the real-time fluorescence quantitative PCR technique for detecting the ratoon stunting disease （RSD） in virus-free seedcane seedlings. Healthy tissue culture seedlings were obtained from six plants of sugarcane ROC22, which had been confirmed RSD-positive by detecting the sugarcane juice, by employing the sugarcane seedlings production protocol. Real-time fluorescence quantitative PCR was used to detect RSD pathogens in tissue culture sam- pies. The results showed that target fragment of RSD pathogens was not found in all 10 samples in real-time fluorescence quantitative PCR, with the Ct values of 37 - 39. The healthy tissue culture sugarcane seedlings do not carry RSD pathogens, indicating that adopting healthy seedcane seedlings production technique could thoroughly get rid of RSD pathogens.
文摘为了解不同甘蔗品种的甘蔗宿根矮化病(RSD)感病情况,采用PCR检测方法,对13个甘蔗品种进行RSD感病率检测。结果显示,在所检测的13个甘蔗品种中,不同品种感病率有所差异,其中所检测的2个CP系列感病率最低。同时,利用MSC培养基从感染RSD的甘蔗蔗汁中分离培养到一种生长缓慢、菌落颜色为乳白色的杆状细菌。根据菌落形态、显微镜观察,以及特异引物和16S r DNA扩增多种方法鉴定,最终确认所分离到的杆状细菌即为甘蔗宿根矮化病病原菌(Leifsonia xyli subsp.xyli)。
