马尾松、黄山松及其杂种域球果形态和种子性状变异  

Variation in cone morphology and seed characteristics for Pinus massoniana Lamb.,P.taiwanensis Hayata,and their hybrid zone

作　　者：渠纪腾[1] 阎毛毛[1] 戴晓港[1] 李淑娴[1] 

机构地区：[1]南京林业大学森林资源与环境学院,林木遗传与生物技术省部共建教育部重点实验室,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2012年第6期143-146,共4页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家自然科学基金项目(31070543);江苏省高校自然科学基金重点项目(10KJA180018)

摘　　要：以采自安徽黄山风景区不同海拔的松树球果、种子为研究材料,测定了球果长、球果宽、球果长宽比、种子饱满度、发芽率和千粒质量6项指标,并分析了这些指标随海拔的变化情况。结果表明:随着海拔的升高,球果长、球果宽、长宽比减小;杂种域个体种子的饱满度、发芽率、千粒质量指标均值小于黄山松和马尾松,杂种域的这种变化可能与马尾松和黄山松两个种存在种间生殖障碍有关。对3个种群球果和种子变异的F检验表明,这些指标的变异主要来自植株间,植株的多型现象明显。The cones and seeds of Pinus were collected from different elevations of Mt.Huang in Anhui province.Six characteristics of cone and seed,including cone length,cone width,cone length to width ratio,seed plumpness,germination rate and weight per thousand seeds,were analyzed to reveal the variation trends with elevations.The results indicated that cone length,cone width,cone length to width rate decreased with increasing elevation.Seed plumpness,germination rate and weight per thousand seeds were lower for plants in hybrid zone than that of the other zones.We propose it may relate to the reproduction barrier between P.massoniana and P.taiwanensis.It was note that the variation of cone and seed arose among individual trees,and traits were majorly commonly diverged among individuals at different elevations.

关 键 词：马尾松 黄山松 杂种域 球果 海拔 适应性 

分 类 号：S722[农业科学—林木遗传育种]