电导率法测定玉米种子活力的优化条件  

Optimized Conditions of the Electrical Conductivity Method for Determination of Seed Vigor in Maize

作　　者：石海春[1] 柯永培[1] 刘应洪[1] 余学杰[1] 袁继超[1] 李奇[1] 李莹[1] 

机构地区：[1]四川农业大学农学院,四川雅安625014

出　　处：《种子》2008年第5期7-10,共4页Seed

基　　金：国家农业科技成果转化资金项目(J2004-B-012);四川省"十五"育种攻关项目(2001-3-13)

摘　　要：以4个玉米杂交种的新陈种子为材料,以其田间简易活力指数为对照,研究电导率法测定玉米种子活力的优化条件。结果表明,在10～30℃条件下,浸泡时间在2～36h之间,用电导率法测定的不同玉米种子活力与田间简易活力指数绝大多数均不一致,不适宜的条件下测定的电导率值不能完全反映种子的真实活力,因此浸泡过程中控制浸泡液的温度和浸泡时间的长短尤其重要。在25℃条件下浸泡24～30h,测定的电导率值能准确反映不同玉米的种子活力。By using the new and old seeds of four maize hybrids as materials, the optimized conditions of the electrical conductivity method were studied for determination of seed vigor compared with their simple vigor index in the field. The results were as follows： Most of the seed vigor values, which were determined by electrical conductivity method under the conditions of soaking 2 h to 36 h between 10℃ to 30℃, were discordant with their simple vigor index in the fidd. The electrical conductivity values tested under unadvisable conditions may not accurately represent real seed vigor, hence, it is very important to control liquid temperature and soaking time during the soaking process. The electrical conductivity values determined under the conditions of soaking 24 h to 30 h with 25 ~C, can accurately reflect the seed vigor of different maize.

关 键 词：玉米 种子活力 简易活力指数 电导率 

分 类 号：S513[农业科学—作物学]