4种处理对杜鹃红山茶种子萌发的影响  

Effect of 4 Factors on Seed Germination of Camellia azalea

作　　者：李先民[1] 卜朝阳[1] 卢家仕[1] 张进忠[1] 黄莉萍 刘新亮 崔学强 李春牛[1] LI Xian-min;BU Zhao-yang;LU Jia-shi;ZHANG Jin-zhong;HUANG Li-ping;LIU Xin-liang;CUI Xue-qiang;LI Chun-niu(Flowers Research Institute,Guangxi Academy of Agricultural Sciences,Nanning Guangxi 530007,P.R.China;College of Agriculture,Guangxi University,Nanning Guangxi 530004,P.R.China;Jiangxi Academy of Forestry,Nanchang Jiangxi 330032,P.R.China)

机构地区：[1]广西农业科学院花卉研究所,广西南宁530007 [2]广西大学农学院,广西南宁530004 [3]江西省林业科学院,江西南昌330032

出　　处：《西部林业科学》2020年第2期75-81,共7页Journal of West China Forestry Science

基　　金：广西科技基地和人才专项(桂科AD18281004);广西农业科学院基本科研业务专项(2017YM47、2015YT91);广西特色作物试验站建设项目(桂TS2016018)。

摘　　要：为探索不同处理对杜鹃红山茶种子萌发的影响,以8-9年生杜鹃红山茶植株新鲜种子为材料,探讨GA 3、IAA、6-BA的应用,基质种类,播种深度以及低温沙藏等处理对种子发芽势和发芽率的影响。结果表明,(1)GA 3浓度与处理时间对杜鹃红山茶种子发芽率影响显著,高浓度的GA 3溶液浸种有利于种子萌发,发芽率最高的激素组合为600mg/L GA 3+100mg/L IAA+600mg/L 6-BA+浸种3h;(2)杜鹃红山茶种子萌发对播种环境响应较敏感,播种深度应综合播种基质种类共同考虑,采用混合基质(V椰糠︰V珍珠岩=2︰1),播种深度为1cm,种子萌发效果最佳;(3)低温沙藏能显著提高杜鹃红山茶种子萌发效果,随低温沙藏时间的增加种子的发芽势和发芽率呈逐渐增高的趋势;(4)经低温沙藏的种子继续用GA 3浸种,可进一步提高种子发芽率,种子经低温沙藏60d后采用300mg/L GA 3浸种3h,发芽率最高,为67.78%。For understanding the effects of different treatments on seeds germination of Camellia azalea,by using the fresh seeds of 8-9 year-old Camellia azalea as materials,the influences of different factors,including application of hormone,sowing media,sowing depth and low temperature sand storage were studied.The results showed that:(1)The different concentration of GA 3 and treatment time had significant effects on germination rate,higher concentration of GA 3 promoted seeds germination,and the best combination was 600mg/L GA 3+100mg/L IAA+600mg/L 6-BA+3h.(2)Seed germination was sensitive to the sowing environment,and the sowing depth should be considered with the types of sowing media,selected the mix media(V coir︰V perlite=1︰1)and 1 cm sowing depth was preferred for seeds germination.(3)Low temperature sand storage significantly increased seeds germination,and with the increased storage time,the germination potential and germination rate increased.(4)Seeds soaking with GA 3 after low temperature sand storage was significant promoted for germination.The seed germination rate of 300mg/L GA 3 treated after 60 days of low temperature sand storage was the highest,which was 67.78%.

关 键 词：杜鹃红山茶 种子萌发 激素处理 播种基质 低温沙藏 发芽率 

分 类 号：S685.21[农业科学—观赏园艺]