作　　者： ; ; ; ; ;

机构地区： 思茅师范高等专科学校生命科学系

出　　处： 《生态学杂志》 2010年第8期1505-1510,共6页

摘　　要： 在实验室条件下研究了青藏高原东缘11种小檗属(Berberis)植物的种子萌发特性,并分析了种子萌发能力与种子大小和海拔之间的关系。结果表明,11种植物中,仅有5种植物(金花小檗、匙叶小檗、锥花小檗、鲜黄小檗和刺黄花)种子萌发率超过50%,其中金花小檗最高(86.7%);有2种植物(巴东小檗、华西小檗)种子始终没有萌发,其余4种植物种子萌发率均在10%以下;种子萌发开始时间均在10d以后,匙叶小檗种子萌发的持续时间最长(40d)。11种植物种子萌发率、萌发速率、萌发持续时间与种子大小均呈显著负相关,而萌发开始时间与种子大小之间具有显著的正相关关系。萌发率、萌发速率、萌发持续时间与海拔均有较弱的正关联,萌发开始时间与海拔有较弱的负关联。 This paper examined the seed germination characteristics of 11 Berberis species from the eastern part of Qinghai-Tibetan Plateau, with their relations to seed size and altitude analyzed. Among the 11 species, only 5 species （B. wisoniae, B. aggregate, B. diaphana, B. polyantha, and B. vernae） had a seed germination percentage higher than 50% and B. wisoniae had the highest one （86.7%）, 2 species （B. veitchii and B. silva） had no a seed germination all the time, while the others had a seed germination percentage lower than 10%. The 11 species began to germinate after 10 days, and B. vernae germinated over the longest period （40 days）. The seed germination percentage, germination rate, and germination duration were significantly negatively correlated with seed size and weakly positively correlated with altitude, while the initial germination time was significantly positively related to seed size and weakly negatively related to altitude.

关 键 词： 青藏高原 小檗属植物 种子萌发 种子大小 海拔

领　　域： [生物学]