首页 | 本学科首页   官方微博 | 高级检索  
     检索      

水分对玉米种子萌发调控的研究
引用本文:邢妍妍, 董树亭, 高荣岐.水分对玉米种子萌发调控的研究[J].玉米科学,2008,16(1):086-090.
作者姓名:邢妍妍  董树亭  高荣岐
作者单位:山东农业大学农学院,山东,泰安,271018
摘    要:通过观察不同生育时期玉米新鲜种子、胚、去皮新鲜种子以及干种子的发芽情况,发现胚在15-17DAP便可萌发,但鲜种子萌发率很低,去除种皮可提高萌发率但萌发后生长缓慢。表明种子在发育初期便具备了萌发力,胚乳和种皮限制了胚的萌发及幼苗生长。水分对种子萌发有一定影响,种子发育进程中,伴随种子含水量的减少,鲜种子萌发率逐渐升高,对具有脱水耐性的种子进行干燥,可使种子正常发芽。试验发现延长发芽时间鲜种子也可以萌发并正常生长,即种子不经干燥也可从发育状态转向萌发状态。因此,干燥并不是种子萌发的必要条件,只是加速了种子从发育状态向萌发状态的代谢。

关 键 词:休眠  含水量  萌发率  脱水耐性  干燥
文章编号:1005-0906(2008)01-0086-05
收稿时间:2006/12/5 0:00:00
修稿时间:4/5/2007 12:00:00 AM

Study on Effects of Water Content on Maize Seed Germination
XING Yan-yan,DONG Shu-ting,GAO Rong-qi.Study on Effects of Water Content on Maize Seed Germination[J].Journal of Maize Sciences,2008,16(1):086-090.
Authors:XING Yan-yan  DONG Shu-ting  GAO Rong-qi
Abstract:The germination of maize seed harvested were measured at different development stages, including fresh seed, embryo, seed minus coat and dry seed. Embryo germinated as young as 15-17DAP, but the germination of fresh seed was very low. Seed minus coat could germinate, but seedling grew slowly. The loss of water from seed tissues played some roles in germination. During seed development germination increased following the decline of water content, and dry seed which had acquired tolerance of desiccation germinated and grew normally. Fresh immature seed also can germinate, but that the expression of this germination capacity took longer than for dry seed. Drying was not a prerequisite for germination, but accelerated the transition from development to germination.
Keywords:Dormancy  Water content  Germinating percentage  Tolerance of desiccation  Drying
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《玉米科学》浏览原始摘要信息
点击此处可从《玉米科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号