单 位：
华南农业大学林学与风景园林学院/广东省森林植物种质创新与利用重点实验室
关键词：
南山茶;60Co-γ辐射;发芽率;苗高;叶片生长;叶绿素含量
摘 要：
为了探究60Co-γ辐射对不同南山茶优树种子发芽和幼苗生长的影响,选取3株南山茶优树种子分别进行0(对照)、10、20、30 Gy60Co-γ辐射处理。结果表明:增城1号种子经10 Gy辐射,其种子发芽率和幼苗成活率分别为29.00%和5.00%,11月苗高为16.56 cm,均为4个处理中最低值;东莞5号和广宁2号则表现为30 Gy辐射组成活率、苗高、叶片生长指标居4个处理中最低;增城1号20、30 Gy辐射组叶绿素含量均高于对照组,而东莞5号和广宁2号则表现为辐射组叶绿素含量均低于对照组。对增城1号发芽及生长抑制作用最强的辐射剂量为10 Gy,对东莞5号、广宁2号发芽及生长抑制作用最强的为30 Gy,表明3株南山茶优树对60Co-γ辐射的响应不完全一致。
译 名：
Effects of ~(60)Co-γ Radiation on Seed Germination and Seedling Growth of Three Strains of Camellia semiserrata
作 者：
ZHA Qianhui;JIN Jun;YANG Yahui;GONG Haiguang;HUANG Yongfang;Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm/College of Forestry and Landscape Architecture,South China Agricultural University;
关键词：
Camellia semiserrata;;60Co-γ radiation;;germination rate;;height growth;;leaf growth;;chlorophyll content
摘 要：
In order to explore the influence of60Co-γ radiation on different trees of Camellia semiserrata including germination and seedling growth,the seeds of three strains of Camellia semiserrata were irradiated by60Co-γ radiation of 0 Gy,10 Gy,20 Gy and 30 Gy respectively. The result showed that the germination rate,survival rate and seedling length in November of Camellia semiserrata ‘Zengcheng No. 1'of 10 Gy group were 29. 00%,5. 00% and 16. 56 cm respectively,which were the lowest of the four groups. In the contrary,the survival rate,seedling length and leaf index of Camellia semiserrata ‘Dongguan No. 5 'and ‘Guangning No. 2 'of 30 Gy group were the lowest of the four groups. The chlorophyll contents of Camellia semiserrata ‘Zengcheng No. 1'in higher radiation groups( 20 Gy and 30 Gy) were higher than the control group,but the chlorophyll contents of Camellia semiserrata‘Dongguan No. 5'and‘Guangning No. 2'of the control group were higher than the radiation groups. The radiation dose showing strongest inhibition to germination and growth of Camellia semiserrata ‘Zengcheng No. 1'was 10 Gy,but to Camellia semiserrata ‘Dongguan No. 5'and ‘Guangning No. 2'was 30 Gy. It suggested that the reaction of threestrains of Camellia semiserrata to the60Co-γ radiation was inconsistent.
