低温胁迫对大豆萌发期生理指标的影响  

Effect of Low-temperature Stress on Physiological Indexes of Soybean at Germination Stage

作　　者：张大伟[1,2] 杜翔宇[1,2] 刘春燕[2] 单大鹏[3] 吴铮[4] 陈庆山[1] 胡国华[1,2] 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030 [2]黑龙江省农垦科研育种中心,黑龙江哈尔滨150090 [3]黑龙江省农业科学院绥化分院,黑龙江绥化152052 [4]黑龙江省巴彦县广播电视局,黑龙江巴彦151800

出　　处：《大豆科学》2010年第2期228-232,共5页Soybean Science

基　　金：国家高技术研究发展计划资助项目(2006AA100104-3);引进国际先进农业科学技术计划资助项目(2006-G1(A));国家支撑计划资助项目(2006BAD21B01);国家转基因专项资助项目(2009ZX08004-009B)

摘　　要：在4℃和20℃条件下,对12个大豆品种萌发期的相对电导率、丙二醛、脯氨酸和可溶性糖等生理指标进行测定,并对其萌发期耐低温性进行综合性评价。结果表明:随着4℃处理时间的延长,电导率、丙二醛、脯氨酸和可溶性糖的含量都升高;4℃与20℃电导率的差值略有升高,其它都降低;只有相对电导率差值的均值变化趋势与4℃变化动态一致。按照上述指标将供试品种萌发期的耐低温性分为3类:绥农14、垦丰7号、黑农48、合丰25和垦农18的耐低温性强,红丰11、铁6915和辽豆21耐低温性次之,垦鉴豆35、海南2号、合丰50和NOVA耐低温性差。结果为进一步完善防御大豆低温冷害措施和进行耐低温性生理生化育种提供理论依据。Soybean is sensitive to low temperature, especially in initial period of germination. Relative conductivity, malondialchehyche（MDA） , proline, and soluble sugar of twelve soybean varieties at stage of germination were measured in 4℃ and 20℃. The comprehensive evaluation aud cluster analysis were conducted for them. The results show that relative conductivity, MDA, proline, and soluble sugar increased with the time at 4℃ , difference value between 4℃ and 20℃ in soluble sugar is increased slightly and the others are decreased, mean trend of difference value in relative conductivity is consistent with change dynamics at 4℃. The most tolerance varieties are Suinong 14, Kenfeng 7, Heinong 48, Hefeng 25, and Kennong 18. On the contrary, Kenjiandou 35, Hainan 2, Hefeng 50, and NOVA are the least. It is provided a theoretical basis for protecting of chilling damage and breeding varieties with low temperature tolerance.

关 键 词：大豆 低温胁迫 生理指标 综合性评价 

分 类 号：S565.1[农业科学—作物学]