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天然青杨种群性成熟条件及性别间差异

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对小五台山地区青杨种群进行野外调查和数据分析研究,发现雌雄植株的性成熟条件具有差异。雌株性成熟的最小年龄(17 a)小于雄株(21 a),而雄株性成熟时的最小胸径和株高都大于雌株,不同性别的青杨其性成熟条件存在差异,雌株性成熟时间一般早于雄株,并且其成熟时的个体也小于雄株。
Differences of Sexual Maturation Between the Genders for Populus Cathayana Rehd. Population
A field investigation of Populus cathayana Rehd population in Xiaowutai Mountains was carried out. Based on the data obtained, this study revealed the differences of sexual maturation between the genders of the population. The results showed that there was a significant difference of sexual maturation between two genders. The males' first flowering emerged on 21a and the female was on 17a. The males DBH and height at sexual maturation was higher than that of females. The females' age at sexual maturation was earlier than males and the size smaller than males.

Populus cathayana Rehd.Growth characteristicSexual maturationSexual differenceAllometry

李霄峰、王碧霞、黄晓燕、仇海红、陈坚

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西华师范大学西南野生动植物资源保护教育部重点实验室,四川南充637009 河北省张家口市农业环境与农产品质量管理站,河北张家口075000

西华师范大学西南野生动植物资源保护教育部重点实验室,四川南充637009

河北省张家口市农业环境与农产品质量管理站,河北张家口075000

四川省旺苍县米仓山自然保护区管理局,四川广元628200

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青杨 生长特征 性成熟 雌雄差异 异速生长

2012

宁夏农林科技
宁夏农林科学院

宁夏农林科技

影响因子:0.27
ISSN:1002-204X
年,卷(期):2012.53(5)
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