激素浸种对不同家系滇青冈种子发芽的影响  

Effects of Exogenous Hormone Solutions Presoaking on the Germination of Different Families Cyclobalanopsis glaucoides Seeds of Yunnan Qinggang

作　　者：凌莉芳[1] 李莲芳[1] 杨文君[1] 吴思明[1] 徐婷婷[1] LING Lifang;LI Lianfang;YANG Wenjun;WU Siming;XU Tingting(Southwest Forestry University,Kunming Yunnan 650224,China)

机构地区：[1]西南林业大学,云南昆明650224

出　　处：《种子》2018年第11期11-15,共5页Seed

基　　金：林业科学技术推广项目(项目批准号:[2015]26号);国家自然科学基金项目(项目批准号:31170585)共同资助

摘　　要：采用L_(16)(4~5)正交设计开展GA_3和6-BA对4株滇青冈家系浸种试验,了解不同因素的水平及其组合对滇青冈种子发芽的影响。结果表明,滇青冈种子发芽延续期长达0.5年,处理组合的平均发芽率和发芽速度分别为43.0%～76.7%和153～190d,且处理组合间呈极显著差异(p<0.01)。家系是影响种子发芽率和发芽速度的主导因子,其中,家系2的发芽率和发芽速度极显著优于其余3株。1.0g/L和25mg/L的GA_3和6-BA溶液处理家系2种子的发芽率最高,发芽最快的是2.0g/L GA_3与75mg/L 6-BA处理家系2种子。适宜浓度的GA_3和6-BA溶液处理滇青冈种子可提高发芽率和加速发芽。The orthogonal design of L 16(4 5)was used to carry out the immersion test of GA 3 and 6-BA solution presoaking four Families seeds of Cyclobalanopsis glaucoides,the purpose was to detect effects of different factorial levels with their treatment combinations(TCs)on the germination traits of C.glaucoides.The results showed that germination duration of Cyclobalanopsis glaucoides seeds was continued almost a half of one year.The mean germinative percentages(GPs)and speeds(GSs)of different TCs were 43.0%-76.7%and 153-190 d,respectively,and there was a significant difference between the TCs of which(p<0.01).The Family was the dominant factor of influencing the seed’s GPs and GSs,of which,the GP and GS indexes of family 2 were significantly superior to that of the other three families(p<0.01).The germination rate of family 2 seeds treated with 1.0 g/L and 25 mg/L solutions of GA 3 and 6-BA solutions was the highest,and the fastest GS from the TC was family 2 seeds treated with the 2.0 g/L GA 3 and 75 mg/L 6-BA solution.Suitable concentration solution of GA 3 and 6-BA presoaking C.glaucoides seeds could increase the GP and accelerate the GS.

关 键 词：滇青冈 正交试验 家系 激素 发芽率 发芽速度 

分 类 号：S792.16[农业科学—林木遗传育种]