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热带亚热带植物学报网络开通

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木薯储藏根采后生理性变质研究进展
马秋香1, 许佳1, 乔爱民2, 张鹏1
1.中国科学院上海生命科学研究院植物生理生态研究所植物分子遗传国家重点实验室及SIBS-ETH上海木薯生物技术中心;2.仲恺农业工程学院农业与园林学院
摘要:  木薯(Manihot esculenta Crantz)是热带、亚热带地区重要的粮食作物和能源作物。木薯产量很高,储藏根富含淀粉,但收获后采后生理性变质严重,严重影响了木薯的开发和利用。结合近期研究工作,综述了木薯储藏根采后生理性变质的研究进展,包括采后生理性变质的检测标准、生化基础、抗采后生理性变质的杂交育种、以活性氧自由基为主要研究对象的功能基因组学与基因工程、应用前景及存在的问题,以期为木薯储藏根采后生理性变质的遗传改良提供参考。
关键词:  木薯,储藏根,采后生理性变质,活性氧自由基,遗传改良
DOI:10.3969/j.issn.1005-3395.2009.3.2162
分类号:
基金项目:中国科学院先进工业生物技术创新基地重要方向项目(KSCX2-YW-G-026, KSCX2-YW-G-035); 上海市浦江人才计划(08PJ14109)
Current Progress in Studies on Post-harvest Physiological Deterioration of Cassava Storage Roots
MA Qiu-xiang1, XU Jia1, QIAO Ai-min2, ZHANG Peng1
1.SIBS-ETH Shanghai Center for Cassava Biotechnology, National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences;2.College of Agriculture and Landscape, Zhongkai University of Agriculture and Engineering
Abstract:  Cassava (Manihot esculenta Crantz) is an important food and bio-energy crop which mainly grows in marginal lands by subsistent farmers in tropics and Cassava (Manihot esculenta Crantz) is an important food and bio-energy crop which mainly grows in marginal lands by subsistent farmers in tropics and subtropics. Cassava contains great amount of starch in its storage roots, but it rapidly undergoes physiological deterioration after harvest, which greatly affects storage life and subsequent starch processing. The current research progresses in post-harvest physiological deterioration (PPD) of cassava were reviewed, including the evaluation methods and biochemical basis, the hybridization breeding efforts to improve cassava resistant to PPD, and genetic engineering mainly related to reactive oxygen species for PPD modification. The perspectives and problems of PPD engineering in cassava were discussed to provide useful information for genetic improvement to delay PPD of storage roots in cassava.
Key words:  Cassava  Storage roots  Post-harvest physiological deterioration  Reactive oxygen species  Genetic improvement

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