研究了遮阳网遮荫处理对鸠坑、龙井43、水古新梢叶绿素生物合成前体物质和新梢叶绿素积累的影响。结果显示：遮荫降低光照强度,茶树新梢叶绿素含量显著增加;同时叶绿素生物合成的前体物质δ-氨基酮戊酸（aminolevulinic acid, ALA）、卟啉胆色素原（porphobilinogen, PBG）、尿卟啉原Ⅲ（Urogen Ⅲ）等含量降低,而原卟啉Ⅸ（protoporphyrin Ⅸ, ProtoⅨ）、镁原卟啉Ⅸ（magnesium protoporphyrin Ⅸ, Mg-ProtoⅨ）、原叶绿素酸酯（protochlorophyllide, Pchlide）含量升高。
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