北京地区不同种源白桦育苗试验初报.pdfVIP

北京农学院学报2015，30(1)：81—85 Journalof of BeijingUniversity Agriculture 北京地区不同种源白桦育苗试验初报 卜燕华，王永格，李子敬，丛日晨 (北京市园林科学研究院／绿化植物育种北京市重点实验室，北京100102) 摘要：为筛选适应北京地区气候的耐热白桦，丰富北京园林绿化植物种类，本研究以5个不同种源白桦种子 为材料，检测出苗率、保苗率，并对5个不同种源白桦苗的生长规律进行分析，比较差异。结果表明，KYY种 源白桦生长表现最优，适合北京气候环境，而东北卜8种源白桦的株高和地径生长最慢，适应性最差。株高、地 径、植物叶色可以作为选育耐热白桦的定量指标，株型可作为定性指标。 关键词：耐热白桦；种源；生长特性；北京 8：26 A onthe cultivationofBetula preliminarystudy seedling fromdifferent in provenancesBeijing BU Richen Yanhua，WANG Yongge，LIZijing，CONG Instituteof of Plants (Beijing LandscapeArchitecture／Be讲ngKeyLaboratoryGreeningBreeding，Beijing100102，China) ordertoselecttheheat—resistantBetula whichcan totheclimateof andenrichtheland— Abstract：In platyphyllaadapt Beijing of rateandthe survivalrateofseedscollectedfrom5different scapeplantspeciesBeijing，seedlingemergence seedling prove— nanceswere the of卜2 old was the difference investigated．Moreovergrowth years analyzed。andsignificant regularity seedlings wastestedvariance resultsshowedthatthe fromKYY by of analysis．The growthperformanceB．platyphyllaseedlings prov— enancebetterthan other was from totheclimateof the of provenances，whichadapted Beijing．And seedlings B．platyphylla northeastern卜8exhibitedth