天然油菜素内酯对臭椿种子发芽及下胚轴切段伸长的影响  

Effect of Natural Brassinolide on Seed Germination and Hypocotyl Elongation of Ailanthus altissima(Mill.) Swingle

作　　者：郭炳强 

机构地区：[1]宝鸡市林业工作中心站,陕西宝鸡721001

出　　处：《陕西林业科技》2008年第4期34-36,41,共4页Shaanxi Forest Science and Technology

摘　　要：采用种子发芽力和下胚轴切段伸长测定的方法,研究了天然油菜素内酯对臭椿种子发芽和下胚轴切段伸长的影响,结果表明,不同浓度的天然油菜素内酯处理对臭椿种子的发芽率、发芽势、平均发芽速度均由明显的促进作用。与对照相比,0.3 mg/L浓度的天然油菜素内酯处理使臭椿种子发芽率提高了33.3%,发芽势提高了9.4%,发芽时间缩短了37.7%;0.4 mg/L浓度的天然油菜素内酯处理使臭椿下胚轴切段伸长比对照提高了29.4%。The research showed that the germination energy, germination rate and average germination speed of Ailanthus altissima （Mill. ）Swingle seeds is obviously improved after the seeds are soaked with the different concentrations of natural brassinolide （ NBR）. Compared with control, the germination rate and germination energy of the seeds are increased by 33.3% and 9.4% respectively,howev- er, the germination time of the seeds is shortened 37.7% with the eoncentration of NBR at 0.3 mg/L.With NBR at 0.4mg/L, the hypocotyl elongation is 29.4% longer over the control.

关 键 词：天然油菜素内酯 发芽率 发芽势 平均发芽时间 下胚轴切段 伸长 

分 类 号：S792.320.5[农业科学—林木遗传育种]