秋冬季节温度变化对毛泡桐实生幼苗顶芽生长发育的影响  

Effect of Temperature Change from Fall to Winter on Growth and Development of the Top Buds of Plauownia tomentosa Seedlings

作　　者：黎明[1] 祝宝玉[1] 范国强[1] 武柯[1] 刘国志[1] 

机构地区：[1]河南农业大学,河南郑州450002

出　　处：《河南农业大学学报》2007年第3期280-283,共4页Journal of Henan Agricultural University

基　　金：河南省杰出人才创新基金(321001700);河南省高校杰出科研人才工程资助项目(2002KYCX003)

摘　　要：对1年生毛泡桐实生苗顶芽进行了解剖学观察.结果表明,随着气候由秋季向冬季过渡,毛泡桐顶芽体积明显缩小,顶端分生组织细胞密度显著增大,细胞壁向内皱缩.这些变化说明,随着气温的变化,毛泡桐顶芽遭受到环境胁迫,其细胞活性逐渐降低,最终导致顶芽死亡.The results of structural botanical experiment of top buds of P. tomentosa seedlings showed ： with the change of the climate from fall to winter, the volume of the top buds of P. tomentosa decreased notably, while the density of the apical meristem cells increased significantly and the cell wall contracted inward. These changes indicated that, with the transformation of the climate from fall to winter, the vitality of the top buds of P. tomentosa descended gradually because of the environment stress, which lead to the death of the top buds ultimately.

关 键 词：毛泡桐 顶芽 温度 解剖学 顶端分生组织 

分 类 号：S792.43[农业科学—林木遗传育种]