西藏沙棘(Hippophae tibetana)的花期、花形态及其花朵数量的初步研究  

A preliminary study on flowering date,flower morphology and flower number of Hippophae tibetana

作　　者：拉琼[1] 欧珠朗杰[1] 段双全[1] 

机构地区：[1]西藏大学理学院,西藏拉萨850000

出　　处：《西藏大学学报（社会科学版）》2009年第6期21-23,共3页Journal of Tibet University

基　　金：国家自然科学基金项目"西藏沙棘的海拔梯度性变异与适应性进化研究"阶段性成果;项目号:30560027

摘　　要：文章通过对分布在西藏墨竹工卡县日多境内的西藏沙棘种群的样方调查,描述了西藏沙棘的花期、雌雄花的形态特征,比较两个不同海拔样带(4200m和4400m)内的西藏沙棘花朵数量的差异。结果表明,西藏沙棘在该研究地内的花期一般是5-6月,雄花比雌花的开放要早3～4天,一标准雄花枝产生的平均花朵数量比雌花枝平均花朵数量多,但两个海拔样带内的花朵数量无显著差异。Based on the survey of Hippophae tibetana in Riduo,Medro Gongka County in Tibet,the flowering date,flower morphology and the number of flowers of Hippophae tibetana at two altitudinal band's were investigated.The results showed that the flowing date of Hippophae tibetana is Jun to July in the study area,the male flowering date is 3～4 days earlier than female flowering date,and there was no significant differences in the flower numbers between two altitudinal bands.

关 键 词：西藏沙棘 花期 花形态 花朵数量 

分 类 号：S793.6[农业科学—林木遗传育种]