马铃薯温光反应及其与内源激素关系的研究  

Sensitivity of Potato Cultivars (Solanum tuberosum L.) to Temperature and Photoperiod and the Relationship with Some Endogenous Hormone

作　　者：肖关丽[1] 郭华春[1] 

机构地区：[1]云南农业大学农学与生物技术学院薯类作物研究所,昆明650201

出　　处：《中国农业科学》2010年第7期1500-1507,共8页Scientia Agricultura Sinica

基　　金：国家马铃薯产业体系项目(nycytx-15);云南省自然科学基金(2009ZC068M);云南省教育厅基金(06Y0004B)

摘　　要：【目的】研究不同温光条件下马铃薯生长、块茎形成及其与内源GA3、ABA和JA的关系,为云南省马铃薯周年均衡生产及品种引进提供依据。【方法】选用云南主栽的4个马铃薯品种——大西洋、合作88、米拉和中甸红,设15℃8h、15℃12h、15℃16h、25℃8h、25℃12h和25℃16h共6个温光处理,观察不同温光条件下马铃薯生长及块茎形成,并对不同温光条件下的内源GA3、ABA和JA进行测定分析。【结果】马铃薯不同品种对温度和光照的敏感性存在差异,大西洋对温度反应较敏感,25℃高温条件下,8h、12h和16h三个光照处理后均无块茎形成,合作88对光照反应较敏感,在16h长日光照条件下,15℃、25℃两个温度处理后均无块茎形成,中甸红在高温和长日照(25℃16h)的共同作用下无块茎形成,米拉在所有温光处理下均有块茎形成。不同温光条件下马铃薯叶片内源GA3、ABA和JA测定分析结果表明,GA3在无块茎形成的温光条件下含量较高而在块茎形成温光条件下含量显著降低,ABA和JA含量无论在何种温光条件下都随马铃薯生育进程持续增高。【结论】GA3是抑制结薯的重要因子,ABA和JA含量升高与植株衰老的关系比与块茎形成的关系更为密切。[Objective] The relationship between potato growth, tuber formation and endogenous GA3, ABA and JA was studied with an aim to provide a basis for the balanced production and variety introduction of potato in Yunnan. [Method] Four main potato cultivars used in Yunnan, including Atlantic, Cooperation 88, Mira and Zhongdianhong, were planted under 6 different temperature and photoperiod treatments （15℃8 h, 15℃12 h, 15℃ 16 h, 25℃8 h, 25℃12 h and 25℃ 16 h）. [Result] Results showed that the sensitivity of potato cultivars to temperature and photoperiod was significantly different. Variety of Atlantic was sensitive to temperature and no tuber formed in treatments of 25℃8 h, 25℃ 12 h and 25℃16 h, variety of Cooperation 88 was sensitive to photoperiod and no tuber formed in temperature-photoperiod treatments of 15℃16 h and 25℃ 16 h, no tuber formed for the variety of Zhongdianhong in treatment of 25℃ 16 h. Only Mira formed tuber in all treatments. Contents of endogenous GA3, ABA and JA in potato leaves were evaluated, and the results showed that the content of GA3 was high in no tuber form conditions and was low in tuber formation condition, content of ABA and JA increased with the potato development in any conditions. [Conclusion] GA3 was an important factor inhibiting the tuber formation of potato, content of ABA and JA was more significantly related with senescence than the tuber formation.

关 键 词：马铃薯 温度 光周期 内源激素 

分 类 号：S532[农业科学—作物学]