云杉属植物种子形态及萌发特征的种间变异

doi:10.3969/j.issn.1000-2006.2015.01.012

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南京林业大学学报（自然科学版） ›› 2015, Vol. 39 ›› Issue (01): 62-66.doi: 10.3969/j.issn.1000-2006.2015.01.012

云杉属植物种子形态及萌发特征的种间变异

林玲¹,段二龙¹,罗建^2*

1.西藏农牧学院资源与环境学院,西藏林芝 860000;
2.西藏高原生态研究所,西藏林芝 860000

出版日期:2015-01-31 发布日期:2015-01-31
基金资助:
收稿日期:2013-12-26 修回日期:2014-03-12
基金项目: 国家自然科学基金项目(31260049,30860026); 西藏自治区自然科学基金项目(2012-2013); 西藏自治区大学生创新计划(2014)
第一作者:林玲,副教授。*通信作者:罗建,副研究员。E-mail: luojian-sh@sohu.com。
引文格式:林玲,段二龙,罗建. 云杉属植物种子形态及萌发特征的种间变异[J]. 南京林业大学学报:自然科学版,2015,39(1):62-6

Interspecific variation in seed morphology and germination of ten plant species from Picea genus

LIN Ling¹,DUAN Erlong¹,LUO Jian^2*

1.Department of Resources and Environment, Tibet Agricultural and Animal Husbandry College, Nyingchi 860000, China;
2.Research Institute of Tibet Plateau Ecology, Nyingchi 860000, China

Online:2015-01-31 Published:2015-01-31

摘要/Abstract

摘要： 在实验室条件下观测了云杉属(Picea)10个树种的种子形态和萌发特性,分析了它们与种源地地理气候因子之间的关系。结果表明:种子长、宽、千粒质量的差异在种间达到极显著水平; 除种子萌发高峰期外,种子发芽率、发芽起始时间和发芽持续时间在种间具有极显著的差异。相关性分析则表明:种子长和宽呈极显著正相关; 种子长、种子宽与千粒质量呈极显著正相关; 而种子千粒质量与发芽率、发芽起始时间和持续时间呈显著正相关; 纬度与种子长、种子宽和千粒质量呈显著正相关; 年均温与种子长、种子宽、千粒质量和发芽持续时间呈显著负相关。因此,纬度和温度是影响云杉属植物个体间种子大小变异的主要因子。

Abstract: In the laboratory, we observed seed morphology and germination of ten species from Picea genus, and explored the relationships between these seed parameters and geo-climatic factors. Our results indicated that: ① seed length and width, and seed mass of 1 000 grains were very significantly differed among ten tree species in Picea genus; ② seed germination rate, germination start time and germination duration also had significant differences whereas germination peak had no differences among these ten tree species. In addition, the correlation analysis showed: ① seed length was significantly and positively correlated with seed width, and they all were also significantly and positively correlated with seed mass per 1 000, furthermore, the seed mass per 1 000 had significant positive relationships with germination rate, germination start time and duration; ② latitude exhibited significantly and positively relations to seed length and width, and seed mass per 1 000, whereas mean annual temperature showed significantly and negatively relationship with seed length and width, seed mass per 1 000 and seed duration. Therefore, latitude and temperature were primary factors affecting the variation in seed size among ten tree species in Picea genus.

中图分类号:

S722

林玲,段二龙,罗建. 云杉属植物种子形态及萌发特征的种间变异[J]. 南京林业大学学报（自然科学版）, 2015, 39(01): 62-66.

LIN Ling,DUAN Erlong,LUO Jian. Interspecific variation in seed morphology and germination of ten plant species from Picea genus[J].Journal of Nanjing Forestry University (Natural Science Edition), 2015, 39(01): 62-66.DOI: 10.3969/j.issn.1000-2006.2015.01.012.

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云杉属植物种子形态及萌发特征的种间变异

Interspecific variation in seed morphology and germination of ten plant species from Picea genus

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