[1]雷军,张宏斌,范菊萍. 青海云杉无性系种子园开花习性[J].西北林学院学报,2012,27(06):70-74.
　LEI Jun,ZHANG Hong-bin,FAN Ju-ping. Blooming and Fruiting Characteristics in Clonal Seed Orchard of Picea crassifolia[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(06):70-74.
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 青海云杉无性系种子园开花习性()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第27卷
期数:
2012年06期
页码:
70-74
栏目:
出版日期:
2012-11-30

文章信息/Info

Title:
 Blooming and Fruiting Characteristics in Clonal Seed Orchard of Picea crassifolia
文章编号:
1001-7461(2012)06-0070-05
作者:
 雷军; 张宏斌; 范菊萍
 (甘肃省祁连山水源涵养林研究院,甘肃 张掖 734000)
Author(s):
 LEI Jun;  ZHANG Hong-bin;  FAN Ju-ping
 （Academy of Water Resources Conservation Forests in Qilian Mountains of Gansu Province, Zhangye, Gansu 734000, China）
关键词:
 ; 青海云杉; 无性系种子园; 开花习性
Keywords:
 ; Picea crassifolia;  clonal seed orchard;  flowering habit
分类号:
S791.18
文献标志码:
A
摘要:
 通过对张掖市龙渠国家青海云杉无性系种子园青海云杉球花的发育过程及开花规律，雌、雄球花的空间分布特征等开花习性进行了观察调查，研究结果表明：1)青海云杉雌、雄球花4月下旬至5月上旬进入授粉期和散粉期，授粉期持续6~11 d，散粉期可持续8~13 d。2)青海云杉种子园各无性系间雌、雄球花数量存在极显著差异。3) 青海云杉雌球花主要分布在树冠中上部外缘枝条上,雄球花则基本着生在树冠中下部内膛细弱枝条上;该分布规律说明青海云杉雌、雄球花的分布是自然选择的结果，有利于传粉授粉和种子飞散传播。雌球花的分化和发育需要充足的光照和营养,而雄球花的分化和发育则对光照和营养的要求不严。在水平分布上,光照对雌球花的分布也有一定影响,雌球数量南面较其他3个方位稍大，雄球花的分布则比较均衡。在垂直方向上，90%以上的雌球花分布在树冠中上部，而90%的雄球花分布在树冠的中下部，雌雄球花比表现为上层>中层>下层。

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