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植物研究 ›› 2001, Vol. 21 ›› Issue (3): 403-408.

• 论文 • 上一篇    下一篇

濒危植物元宝山冷杉结实特性与种子繁殖力初探

唐润琴, 李先琨, 欧祖兰, 李瑞棠   

  1. 广西壮族自治区中国科学院 广西植物研究所桂林 541006
  • 收稿日期:2001-03-11 出版日期:2001-09-15 发布日期:2016-06-14
  • 通讯作者: 李先琨, E-mail:xiankunli@263.net E-mail:xiankunli@263.net
  • 作者简介:唐润琴(1957-), 女, 实验师, 从事生态学试验研究工作.
  • 基金资助:
    广西自然科学基金资助项目(桂科自9811013).

THE FRUITING CHARACTERISTICS AND REPRODUCTIVE CAPACITY OFSEEDS OF ABIES YUANBAOSHANENSIS

TANG Run qin, LI Xian kun, OU Zu lan, LI Rui tang   

  1. Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and Academia Sinca, Guilin 541006
  • Received:2001-03-11 Online:2001-09-15 Published:2016-06-14

摘要: 元宝山冷杉是仅产于广西中部元宝山的珍稀濒危植物, 天然更新能力差。调查表明, 不同植株的球果产量、单果种子的数量均有差异, 球果长短、大小与种子数量、种子质量(饱满率)存在显著正相关。风干种子千粒重为16.9581 g, 含水量为12.85%。元宝山冷杉种子的吸水过程分为三个阶段, 第一阶段是0~1 小时, 为急剧的吸水阶段;第二阶段是1~10 小时, 吸水基本停滞;第三阶段是10~339 小时, 又是急剧的吸水阶段, 吸水量递增。用0.1%靛蓝溶液测定种子生活力, 按以往判别松科植物的标准判断, 其生活力极低。饱满种粒在培养箱中发芽率为18.9%, 场圃发芽率6.8%。以往判断方法是否不适用元宝山冷杉, 需作进一步的探讨和研究。种子发芽率低, 是冷杉自然更新不良、种群难以延续和扩展的重要因素。

关键词: 元宝山冷杉, 结实特性, 种子, 繁殖力, 试验

Abstract: Abies yuanbaoshanensis is endangered plant and only distributing on Yuanbaoshan mountain, Guangxi. Its reproductive capacity is so inferior. The number of fir-apples and seeds for Abies yuanbaoshanensis unit are difference. The relationship among length, diameter and number, quality of seed is signalization. The weight for kilo grains of seeds are 16.9581 g, containing water 12.85%.The water absorption of seeds of Abies yuanbaoshanensis clearly showed three stages:the first in 0~1 hours, the rapid absorption;the second stager in 1~10 hours, the stagnant;the third stage in 10~339 hours, is the fast reabsorption, especially in 10~15 hours. The rate of burgeon up for satiety seeds in the incubator that constant temperature and humidity are 18.9%, while the rate is 6.8% for open air. The main cause for continuing and extending the population is inferior capability of seeds for burgeon.

Key words: Abies yuanbaoshanensis, fruiting characteristics, sseed, reproductive capacity, experiment