聚乙二醇胁迫杂交桑品种桂优62丛生芽部分生化指标的变化  

Changes in Some Biochemical Indexes of the Cluster Buds of Hybrid Multiple Mulberry(Morus alba) Guiyou 62 under PEG Stress

作　　者：余亚圣[1] 黎其友[1] 赵爱春[1] 金筱耘[1] 李晔[1] 余茂德[1] 

机构地区：[1]西南大学生物技术学院,重庆400716

出　　处：《蚕学通讯》2012年第1期8-13,共6页Newsletter of Sericultural Science

基　　金：现代农业产业技术体系建设专项(nycytx-27-gw101);重庆市蚕桑重大科技专项(CSTC;2009AA1024)

摘　　要：本文以桂优62号桑萌发幼苗为材料,用不同浓度聚乙二醇(PEG)模拟干旱胁迫,测定了可溶性糖、丙二醛和脯氨酸含量的变化。结果表明:在幼苗期,随着干旱胁迫的加重,可溶性糖和丙二醛含量逐渐降低;脯氨酸含量逐渐提高。向培养基中添加PEG筛选抗旱性组培桑苗的临界浓度为7%。The germinating seedlings of mulberry （Morus alba ） variety Guiyou 62 were exposed to simulated drought created by different concentrations of polyethylene glycol （PEG） and the changes in their soluble sugars, MDA and proline contents were monitored. The results showed that with the increase in PEG concentration in the medium, the soluble sugars and MDA decreased and the proline content in the seedlings increased steadily. The critical PEG concentration for the screening of drought-tolerant mulberry seedlings was 7%.

关 键 词：桑树桂优62号 聚乙二醇(PEG) 生化指标 

分 类 号：S888[农业科学—特种经济动物饲养]