赤霉素浸泡和盐碱地播种对沙冬青、金叶莸和化香树种子萌发的影响  

Effect of gibberellin and sowing on salt-affected land on the seed germination of Ammopiptanthus mongolicus,Caryopteris clandonensis ‘Worester Gold' and Platycarya strobilacea sieb.et zucc.

作　　者：王胜 丁雪梅 尹金珠 荆瑞英 时彦平 

机构地区：[1]山东胜伟园林科技有限公司,山东潍坊261108

出　　处：《山东林业科技》2016年第2期6-11,共6页Journal of Shandong Forestry Science and Technology

摘　　要：采用不同浓度赤霉素溶液(0mg/kg、100mg/kg、200mg/kg、300mg/kg、400mg/kg、500mg/kg、600mg/kg)分别浸泡沙冬青、金叶莸和化香树种子,通过比较其发芽率来确定种子萌发需要的最佳赤霉素浓度;进而在各自最佳赤霉素浓度下设定不同的浸泡时间(12h、24h、36h、48h),观察其对种子发芽率的影响;最后,在各自最佳赤霉素浓度和最佳浸泡时间下,在不同盐浓度(0%、0.2%、0.3%、0.4%、0.5%、0.6%)的盐碱地上进行播种。结果表明:(1)经过赤霉素浸种后,种子发芽率显著提高,沙冬青种子发芽率在赤霉素浓度为200mg/kg时最高,金叶莸种子发芽率在赤霉素浓度为600mg/kg时最高,而化香树种子最适宜的赤霉素浓度为400mg/kg;(2)沙冬青、金叶莸和化香树最佳浸泡时间分别为12h、24h和36h;(3)通过沙冬青、金叶莸和化香树播种后在盐碱地上出苗的直观表现,初步确定耐盐性分别为0.6%、0.3%和0.2%。Using the different concentration GA_3（0mg/kg,100mg/kg,200mg/kg,300mg/kg,400mg/kg,500mg/kg,600mg/kg）treatment on Ammopiptanthus mongolicus,Caryopteris clandonensis ‘Worester Gold＇and Platycarya strobilacea Sieb.et Zucc.and through comparing germination percentage,we confirmed the best concentration of GA_3 germination needed.And then setting the different immersion hours（12h,24 h,36h,48h）in the best concentration of GA_3 respectively,we observed the effect of germination percentage.Finally,we sowed the seeds on the different salt concentrations（0%、0.2%、0.3%、0.4%、0.5%、0.6%）of salt-affected land under the best germination percentage and best immersion hour respectively.The results indicated that：1.Germination percentage could be stimulate significantly after seeds soaking by GA_3.The best suitable content is 200mg/kg for Ammopiptanthus mongolicus,600mg/kg for Caryopteris clandonensis ‘Worester Gold＇,400mg/kg for Platycarya strobilacea Sieb.et Zucc..2.By the test 2,the best immersion hour is 12 h,24hand 36 hfor Ammopiptanthus mongolicus,Caryopteris clandonensis ‘Worester Gold＇and Platycarya strobilacea Sieb.et Zucc.respectively.3.On salt-affected land through intuitive performance of emergence after seeding in Ammopiptanthus mongolicus,Caryopteris clandonensis ‘Worester Gold＇and Platycarya strobilacea Sieb.et Zucc.,we preliminarily determined the salt tolerance is0.6%,0.3% and 0.2% respectively.

关 键 词：赤霉素 浸泡时间 盐碱地 发芽率 耐盐性 

分 类 号：S722.14[农业科学—林木遗传育种]