玉米杂交种生理成熟后子粒田间自然脱水速率差异分析  

Analysis of Dehydration Rate after Physiological Maturity in Maize Hybrids

作　　者：张亚军[1] 张林[1] 周艳春 王振华[1] 

机构地区：[1]东北农业大学,黑龙江哈尔滨150030 [2]黑龙江省种子管理局,黑龙江哈尔滨150008

出　　处：《作物杂志》2010年第2期58-61,共4页Crops

基　　金：国家自然科学基金(30571166);国家"十一五"科技支撑计划"粮食丰产科技工程"项目(2006BAD02A11);黑龙江省科学计划项目(GA07B101A1)资助

摘　　要：以黑龙江省推广的12个玉米杂交种为试验材料,研究了玉米杂交种生理成熟后子粒田间自然脱水速率差异。结果表明,供试玉米杂交种生理成熟期在抽丝后55d至65d,品种间田间自然脱水速率差异极显著;适合第一积温带南部的6个杂交种中吉单180的田间自然脱水速率最快,达到0.840%/d,其次是本育9,达到0.815%/d,最低是丰禾10,为0.305%/d;适合第一积温带西部的3个杂交种中庆单2脱水最快,达到0.795%/d,其次为四单19和金玉1号;适合第二积温带中西部的3个杂交种中白单9最高,达到0.875%/d,其次为东农250,达到0.525%/d。其结果为快速脱水玉米杂交种选用提供参考依据。Difference of natural dehydration rate in field after physiological maturity of 12 maize hybrids was analysed in this study.It was showed that the difference was extremely significant at 55 to 65 d after silking during physiological maturity.Among the six hybrids which adapted to the south of the first accumulated temperature zone,the dehydration rate of Jidan180 was the fastest（0.840%/d）,followed by Benyu 9（0.815%/d）,and the slowest was Fenghe 10（0.305%/d）.Among the three hybrids which adapted to the west of the first accumulated temperature zone,the hybrid Qingdan2 had the fastest dehydration rate（0.795%/d）,followed by Sidan19 and Jinyu1.Among the three hybrid which adapted to the midwest of the first accumulated temperature zone,the hybrid Baidan9 had the fastest dehydration rate（0.875%/d）,followed by Dongnong250（0.525%/d）.The resultS provided the reference for breeding of high yield,high quality and the fast dehydration speed hybrid.

关 键 词：玉米 杂交种 生理成熟 脱水速率 

分 类 号：S513[农业科学—作物学]