湖北十堰发现国家二级重点保护野生植物香果树|久久久精品人妻一区二区三区四

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  中新网武汉7月24日电 (梁婷 李镇海)记者24日从湖北省林业局获悉,湖北赛武当国家级自然保护区管理局植物本底资源调查团队近日开展实地调查时,发现国家二级重点保护野生植物香果树。

湖北十堰发现国家二级重点保护野生植物香果树。李露 摄

  香果树为茜草科香果树属落叶乔木,是古老孑遗植物,起源于距今约1亿年前的中生代白垩纪,素有植物界“活化石”之称,对研究茜草科系统发育和古植物地理区系有科研价值。

香果树素有植物界“活化石”之称。李露 摄

  香果树是中国特有单种属珍稀树种,被列为国家二级重点保护野生植物。香果树濒危,主要受自身生长特性影响。其繁殖能力较差,一般20龄以上的壮龄树才开花,每两年至四年才开花一次,且花朵质量参差不齐,导致结果率非常低。此外,香果树种子发芽率通常仅有10%至20%,且对环境条件如温度、光照和湿度等要求苛刻,稍有不慎便会导致种子无法发芽。

  今年5月,湖北赛武当国家级自然保护区管理局和江汉大学专家团队在开展汉江中上游珍稀生物资源调查时,在该保护区一峡谷中发现几株不太一样的植物。经权威专家鉴定,初步确定为香果树。7月份,调查人员在该峡谷共发现7株该植物,其中有两株胸径约40厘米、树高约12米的大树,且一株正在开花。调查人员采集树干、叶片等特征信息后,经专家最终确认,该植物为国家二级重点保护野生植物香果树。

  香果树花型奇特,圆锥状聚伞花序,生长在枝条顶端,漏斗状花冠呈米白色,萼片带柄像勺子,盛花期持续15天至20天。盛放时,树冠缀满白色或黄色的漏斗状花朵,微风拂过,花香四溢。(完)

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