| 不同甘蔗基因型对低温胁迫的响应及其耐寒性评价 |
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| 引用本文： | 唐仕云,杨丽涛,李杨瑞.不同甘蔗基因型对低温胁迫的响应及其耐寒性评价[J].热带作物学报,2012,33(4):635-641. |
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| 作者姓名： | 唐仕云 杨丽涛 李杨瑞 |
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| 作者单位： | 1. 广西大学农学院 亚热带农业生物资源保护与利用国家重点实验室 广西南宁530005;中国农业科学院甘蔗研究中心广西农科院甘蔗研究所 广西甘蔗遗传改良重点实验室 广西南宁530007
2. 广西大学农学院 亚热带农业生物资源保护与利用国家重点实验室 广西南宁530005;中国农业科学院甘蔗研究中心广西农科院甘蔗研究所 广西甘蔗遗传改良重点实验室 广西南宁530007;广西作物遗传改良生物技术重点开放实验室,广西南宁530007 |
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| 基金项目： | 广西甘蔗研究所基本科研业务专项（No. G2009012）；国家科技支撑计划项目（No. 2008BADB8B00）； 科技部国际合作项目（No.2008DFA30600、No. 2009DFA30820）；农业部948项目[No. 2009-Z8（2）]；广西科学研究与技术开发计划项目（桂科产1123008-1）；广西自然科学基金创新团队项目（No. 2011GXNSFF018002）。 |
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| 摘 要： | 以广西农科院甘蔗研究所2008年育种材料中4个农艺性状优异的品系（08-56、08-441、08-572和08-1497）和2个广西主栽品种（ROC22和ROC16）为研究对象，在甘蔗苗期进行低温胁迫处理，通过抗寒形态特征、抗逆生理生化及光合特性指标的变化，综合评价各供试品种（系）的抗寒性。结果表明：（1）低温胁迫处理使甘蔗的株高、假茎粗均降低，使甘蔗叶片不同程度的萎蔫，叶片叶绿素含量降低。此外，低温胁迫处理使叶片丙二醛含量、细胞膜透性、脯氨酸含量逐渐增加，过氧化物酶（POD，peroxidase）活性显
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| 关 键 词： | 甘蔗 品种 抗寒性 综合鉴定 极点排序法 |
Response of Different Sugarcane Genotypes to Low Temperature and Evaluation for Cold Tolerance of Sugarcane |
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| TANG Shiyun,YANG Litao and LI Yangrui.Response of Different Sugarcane Genotypes to Low Temperature and Evaluation for Cold Tolerance of Sugarcane[J].Chinese Journal of Tropical Crops,2012,33(4):635-641. |
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| Authors: | TANG Shiyun YANG Litao and LI Yangrui |
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| Institution: | 1 Agricultural College, Guangxi University/State Key Laboratory for Conservation and Utilization
of Subtropical Agro-Bioresources
2 Sugarcane Research Center, Chinese Academy of Agricultural Sciences/Sugarcane Research Institute, Guangxi Academy of Ag;1 Agricultural College, Guangxi University/State Key Laboratory for Conservation and Utilization
of Subtropical Agro-Bioresources
2 Sugarcane Research Center, Chinese Academy of Agricultural Sciences/Sugarcane Research Institute, Guangxi Academy of Ag;Sugarcane Research Center, Chinese Academy of Agricultural Sciences/Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/ Guangxi Key Laboratory of Sugarcane Genetic Improvemen |
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| Abstract: | In order to establish an integrated assessment system in cold resistance of sugarcane and to screen the cold tolerant genotypes,4 elite sugarcane lines(08-56,08-441,08-572 and 08-1497),which were part of breeding materials from Sugarcane Research Institute,Guangxi Academy of Agricultural Sciences,and 2 main varieties(ROC22 and ROC16),were employed to examine the cold resistance at seedling stage based on morphological characteristics,physiological and biochemical indices and photosynthetic traits in this experiment.The plant height and pseudo-stem diameter were decreased in low-temperature treatment than that in room temperature treatment.Different degrees of wilting leaves were observed.MAD content,cellular membrane permeability,proline content and Fo value were increased.SPAD values,POD(peroxidase)activity,net photosynthetic rate,stomatal conductance,and Fv/Fm values were declined in low temperature treatment.Variation of SOD(Superoxide dismutases)activity were different in different sugarcane genotypes.The evaluation score for each sugarcane cultivar was calculated by the method of polar ordination.According to the scores,ROC22 showed the lowest cold tolerance and line 08-56 showed the highest,while the tolerance of all the other lines was higher than that of ROC22 but lower than that of ROC16. |
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| Keywords: | Sugarcane Variety Cold resistance Comprehensive evaluation Pole-sorting method |
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