摘要
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(UrogenⅢ)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。
Effects of light-shading on accumulation of chlorophylls and their biosynthetic precursors in tea cultivars Jiukeng, Longjing43, Shuigu were investigated using dark light-shading net. It showed that light-shading increased the accumulation of chlorophylls in tea shoots, accompanying decrease in levels of aminolevulinic acid (ALA), Porphobilinogen (PBG) and urogen III and increase in levels of protoporphyrin IX (Proto IX), magnesium protoporphyrin IX (Mg-Proto IX)andprotochlorophyllide (Pchlide).
出处
《茶叶科学》
CAS
CSCD
北大核心
2012年第2期115-121,共7页
Journal of Tea Science
基金
国家科研院所技术开发研究专项:超绿活性茶粉制备技术与创新产品开发研究(2010EG163313)
关键词
茶树新梢
叶绿素
生物合成
前体物质
遮荫
低光强
tea shoot, chlorophylls, biosynthesis, precursors, shading, low illumination intensity