四倍体刺槐大小孢子发育时期与花器形态的相关性 - 核农学报.pdfVIP

( ) 292 核 农 学 报 　2006 ,20 4 :292～295 　 J ournal of N uclear Agricultural Sciences ( ) 文章编号 2006 0429204 四倍体刺槐大小孢子发育时期与花器形态的相关性 郝 　晨 　李 　云 　姜金仲 　刘 　洋 (北京林业大学生物科学与技术学院教育部林木花卉遗传育种重点实验室 ,北京 　100083) 摘 　要 :本研究通过观察四倍体刺槐花器 , 得出相应的花蕾外部形态 、大小 、颜色和花序中不同序位花蕾 发育时期与大小孢子细胞学发育时期密切相关 。因此根据花器形态特征可判断大 、小孢子发育细胞学 的时期 ,从而为四倍体刺槐花器离体培养接种外植体的选择提供依据 。 关键词 : 四倍体刺槐 ;大 、小孢子发育 ;花器形态 ;相关性 THE CORRELATION BETWEEN MICRO AND MEGA SPORO GENESIS’S DEVELOPMENT AND MORPHOLO GY OF FLOWER ORGAN OF TETRAPLOID BLACK LOCUST HAO Chen 　L I Yun 　J IAN G Jinzhong 　L IU Yang ( College of B iological Sciences and Technology , Beij ing Forestry University Key L aboratory f or Genetics and B reeding in Forest Trees and Ornamental Plants , Ministry of Education , Beij ing 　100083) Abstract : The results of observing the morphology flower organ development and cytological development period of both microspore and megaspore of tetraploid black locust ( Robinia psendoacacia) show that the outside shapes , size , color of flower organ are highly related to the development period of micro and mega sporogenesis. So the micro and mega sporogenesis ’s development period can be j udged by the outside observation of flower . The j udgments may be applied to choose suitable explants while flowerorgantissuecultures are done . Key words :tetraploid black locust ( Robinia pseu