摘要
为研究水分胁迫条件下不同类型冬小麦品种生理特性的变化特点,在干旱胁迫和正常水分条件下对不同抗旱类型冬小麦品种(青麦6号、鲁麦21、良星99、烟农21、烟农24、济麦22)的旗叶生理特性进行了研究。结果表明:不同小麦品种旗叶在开花后干旱胁迫下的可溶性蛋白含量以及保护酶系统SOD、CAT和POD活性均降低,而可溶性糖含量和丙二醛含量均升高,而且这种降低和升高的幅度随生育进程而增大。旱地品种青麦6号和烟农21在干旱胁迫下旗叶的可溶性糖含量高于其他品种且上升幅度快,青麦6号和鲁麦21可溶性蛋白含量以及SOD、CAT和POD活性均高于其他品种且下降幅度缓慢,而丙二醛含量均低于其他品种且随着生育进程积累速度平缓,产量及产量构成因素降低的幅度小。因此,旱地小麦品种在干旱胁迫条件下能保持一个相对较优的生理状态,其代谢功能和抗旱能力较强,最终获得高产。
The effect on some physiological characteristics in flag leaf of different wheat cultivars（ Qingmai 6, Lumai 21,Liangxing 99,Yannong 21,Yannong 24,Jimai 22） were studied under drought and well watered conditions. The results showed that the soluble protein content,as well as activity of the protective enzyme system SOD, CAT and POD decreased under drought stress after anthesis,the content of MDA and the soluble sugar content increased at the same conditions. Compared with the other four cultivars,the soluble sugar content in flag leaf of Qingmai 6 and Yannong 21 were relatively higher and increased quickly. The soluble protein content and the activity of SOD,CAT and POD were higher and the decreased amplitude was mild at the same time. The content of MDA was lower than other cultivars and increased slowly with the development of drought stress and the decreased amplitude of yield and yield components were small. These indicated that these two cultivars could maintain a relatively superior physiological state under drought stress,and its metabolic function and drought resistance were strong.
出处
《华北农学报》
CSCD
北大核心
2014年第2期174-180,共7页
Acta Agriculturae Boreali-Sinica
基金
山东省现代农业产业体系小麦创新团队项目
山东省作物栽培学与育种学泰山学者岗位专项资金项目
山东省农业良种工程(2012)
山东省小麦玉米周年高产高效协同创新中心
关键词
小麦
干旱胁迫
花后
生理特性
Wheat
Soil water stress
After anthesis
Physiological characteristic
