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热带、亚热带玉米群体的鉴定研究
引用本文:陈彦惠,吴连成,吴建宇.热带、亚热带玉米群体的鉴定研究[J].河南农业大学学报,1999,33(4):321-325.
作者姓名:陈彦惠  吴连成  吴建宇
作者单位:河南农业大学农学院,河南,郑州,450002
基金项目:河南省杰出青年科学基金!(984012100)
摘    要:对8个热带、亚热带玉米群体在郑州生态条件下表现进行鉴定和评价,结果表明,热带、亚热带群体散粉、吐丝期显著延迟,雌雄不协调,植株穗位高、叶片数增多、空秆率高、结实性产左,果穗性状均明显劣于温带对照,在郑州生态条件下不能直接利用,但是群体内具有较大的遗传变异和选择潜力,可以用来拓宽现有玉米的遗传基础;不同热带、亚热带群体的光周期敏感性不同;不同性状对光同期反应的敏感程度不同,ASI、吐丝期、穗位高、叶

关 键 词:玉米  热带种质  光周期敏感性

Study on identifying tropical ,subtropical populations of maize
CHEN Yan-hui,WU Lian-cheng,WU Jian-yu.Study on identifying tropical ,subtropical populations of maize[J].Journal of Henan Agricultural University,1999,33(4):321-325.
Authors:CHEN Yan-hui  WU Lian-cheng  WU Jian-yu
Institution:CHEN Yan-hui,WU Lian-cheng,WU Jian-yu (Agronomy College,Henan Agricultural University,Zhengzhou 450002,China)
Abstract:This study dealt with the identification and evaluation of 8 maize populations from tropical and subtropical regions under the ecological conditions in Zhengzhou,Henan.Results showed that the significant delaying days to shed and days to silk,discoordinating for the development of male and female,higher plant and ear height,more leaf numbers,high barreness,worse performance of ear traits compared with the CK(temperate population) were found,which showed the tropical and subtropical populations could not be utilized directly under the ecological conditions in Zhengzhou.By using selection and improvement the tropical and subtropical populations can be used to broaden the genetic base of temperate maize breeding,beause of the greater genetic variation and higher selection potential within each population.The different performances of the sensitivity to photoperiod were observed among different tropical and subtropical populations and different traits.The ASI ,time to silk,ear height,leaf numbers,grain yield per ear could be used as the good evaluation traits for identifying the sensitivity to photoperiod.
Keywords:maize  tropical germplasm  sensitivity to photoperiod
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