大叶茶种子萌发率及其与生长环境的相关性分析  

Different Climate Led to Difference in Germination Rate of Camellia sinensis var. assamica Seed

作　　者：苏志龙[1,2] 李冬[1] 罗银玲[1] 兰芹英[2] 黄玫[3] 杨兴荣[3] 李慧[3] 

机构地区：[1]普洱学院生命科学系,云南普洱665000 [2]中国科学院西双版纳热带植物园,云南勐腊666303 [3]云南省农业科学院茶叶研究所,云南勐海666201

出　　处：《云南农业大学学报（自然科学版）》2013年第4期507-511,共5页Journal of Yunnan Agricultural University:Natural Science

基　　金：科学院战略资源支撑体系(08ZK121B01);科技部平台项目(2005DKA21006)

摘　　要：为研究生长环境差异对大叶茶(Camellia sinensis var.assamica)种子萌发行为的影响,对来自普洱市5个区县的大叶茶种子进行自然干燥脱水,在常温下萌发并进行萌发率分析。结果表明:不同种源地的大叶茶种子初始萌发率及脱水后的萌发率都存在差异。5个种源地中,镇沅县的大叶茶种子萌发率最高,初始萌发率为44.0%,脱水后萌发率可达57.3%;孟连县的萌发率最低,初始萌发率为25%,脱水后萌发率可降低至18.7%。经过线性回归分析发现,萌发率的差异与种源地的海拔与温度相关。在5个区县中,镇沅县年均温最低,海拔最高,种子萌发率最高;孟连县年均温最高,海拔最低,种子萌发率最低。总之,生长环境不同可导致大叶茶种子萌发率差异:种源地的海拔越高、温度越低,种子萌发率越高。In order to evaluate the effects of climate on germination of Camellia sinensis var.assamica seeds,the seeds from five localities in Puer were air dried and their germination rate at room temperature were analyzed.The results showed that initial seed germination rates and germination rates of dehydrated seeds from different localities were different.Among five seed sampling localities,the seeds from Zhenyuan County（ZY） had highest germination rate.The initial germination rate of ZY seeds was 44% and the maximum was 56%.The seeds from Menglian County（ML） had lowest germination rate,initial germination rate was 25% and the minimum was 19%.The linear-regression analysis showed that the difference was related with altitude and temperature of seed sampling localities.Among five seed sampling localities,ZY with lowest mean annual temperature and highest altitude had highest germination rate.Inversely,ML with highest temperature and lowest altitude had lowest germination rate.In conclusion,different climate can lead to difference in germination rate of Camellia sinensis var.assamica seed： higher altitude or lower temperature led to higher seed germination rate.

关 键 词：大叶茶 气候 种子萌发 

分 类 号：S571.104.1[农业科学—茶叶生产加工]