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大盘山香果树(Emmenopterys henryi)种内及其与常见伴生种之间的竞争关系 被引量:34
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作者 康华靖 陈子林 +2 位作者 刘鹏 张志祥 周钰鸿 《生态学报》 CAS CSCD 北大核心 2008年第7期3456-3463,共8页
应用了生态位和单木竞争模型对浙江省大盘山国家级自然保护区香果树(Emmenopterys henryi)种内及其与常见伴生种之间的竞争关系进行了研究。结果表明,群落中,香果树的生态位宽度最大,香果树与其伴生种生态位的重叠值顺序为:杉木>红... 应用了生态位和单木竞争模型对浙江省大盘山国家级自然保护区香果树(Emmenopterys henryi)种内及其与常见伴生种之间的竞争关系进行了研究。结果表明,群落中,香果树的生态位宽度最大,香果树与其伴生种生态位的重叠值顺序为:杉木>红脉钓樟>山胡椒>七子花>尖连蕊茶;对生境的要求非常相近的山胡椒、红脉钓樟和尖连蕊茶之间,其生态位重叠值极高。采用Hegyi单木竞争模型的研究结果表明,在早期阶段,香果树的种内竞争强度随着径级的增加而增大,胸径大于15cm后,其竞争强度又逐渐降低。种间竞争强度的大小顺序为:香果树>杉木>七子花>红脉钓樟>山胡椒>尖连蕊茶。两种方法的研究结果表现出较高的一致性,如种内竞争大于种间竞争;种间竞争又以香果树-杉木之间的竞争最大,而香果树-尖连蕊茶之间竞争最小,且两种方法的结果具有一定的互补性。因此,建议在对群落竞争关系的研究中,将生态位和单木竞争模型相结合,更能客观的反映其竞争关系。另外,在经营香果树人工林时,为了给香果树创造一个良好的生存环境,应选择灌木树种作为其主要的伴生种而不宜选择生长迅速的常绿树种。 展开更多
关键词 香果树(emmenopterys henryi) 竞争 生态位 单木竞争模型 大盘山
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Analysis of Amylase and Superoxide Dismutase Isozymes During the Germination Process of Emmenopterys henryi Oliv Seeds 被引量:17
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作者 刘国勇 彭丽娟 陈发菊 《Agricultural Science & Technology》 CAS 2009年第2期6-8,19,共4页
[ Objective] The study was to understand the changes of amylase(AMY) and superoxide dismutase(SOD) isozymes during the ger- mination process of Emmenopterys henryi Oliv seeds. [ Metbod] By employing polyacrylamide... [ Objective] The study was to understand the changes of amylase(AMY) and superoxide dismutase(SOD) isozymes during the ger- mination process of Emmenopterys henryi Oliv seeds. [ Metbod] By employing polyacrylamide gel electrophoresis method, the expressions of AMY and SOD isozymes during seed germination process were analyzed. ~ Result] The main AMY bands remained strong during the whole peri- od and a new band A2 appeared in the middle and late period of seed germination. Some new SOD bands occurred at the early stage, then be- came weak or disappeared in the middle period, and band S6 became intense in the late peried. [ Conclusion.] The expression of AMY and SOD isozyme gene has temporal difference during germination of E. henryi Oliv seeds. 展开更多
关键词 emmenopterys henryi Oliv Amylase isozymes Superoxide dismutase isozyme Seed germination
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6 Kinds of Isozymes after Long-term Subculture of Emmenopterys henryi Oliv. 被引量:5
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作者 杜景川 景丹龙 +1 位作者 陈发菊 李凤兰 《Agricultural Science & Technology》 CAS 2010年第5期22-27,共6页
[Objective] The aim was to study the changes of zymography in 6 kinds of isozymes after long-term subculture of Emmenopterys henryi Oliv.. [Method] Non-denaturing polyacrylamide gel electrophoresis was used to analyze... [Objective] The aim was to study the changes of zymography in 6 kinds of isozymes after long-term subculture of Emmenopterys henryi Oliv.. [Method] Non-denaturing polyacrylamide gel electrophoresis was used to analyze isozyme patterns such as esterase (EST),acid phosphatase (ACP),ATP enzyme (ATPase),amylase (AMY),superoxide dismutase (SOD) and peroxidase (POD) in long-term subculture callus of Emmenopterys henryi Oliv. [Result] The research showed that there were differences among the 6 kinds of isozymes in embryogenic callus and non-embryogenic callus of Emmenopterys henryi Oliv.,and both levels could be taken as the basis for identification,the EST,ACP,and POD of non-embryogenic callus were significantly higher than embryogenic callus. The browning of non-embryogenic callus was non-level in the AMY,SOD and POD isozymes when was compared with normal non-embryogenic callus,while the EST,ACP and ATPase isozymes decreased; When the browning of embryogenic callus was contrasted with normal embryogenic callus,EST isozyme increased and the other 5 kinds of enzymes decreased. [Conclusion] The study provided theoretical basis for research morphological difference and browning of long-term tissue culture of Emmenopterys henryi Oliv.. 展开更多
关键词 emmenopterys henryi Oliv. Callus Long-term subculture Isozyme Browning
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