现代农业科技2023年第7期林业科学光皮桦不同家系种子生活力研究江波1程国源1方乐金2万志兵2*丁亚斌1（1绩溪县镇头国有林场，安徽绩溪245321；2黄山学院生命与环境科学学院，安徽黄山245041）摘要光皮桦是速生、耐瘠薄、适应性强、材质上等的优良用材树种,但在生产中存在采种难、种子小、种子寿命短等问题。本试验以光皮桦22个家系的种子为材料，在低温贮藏的条件下，每月进行1次种子发芽能力检测，探讨各家系种子发芽能力的变化趋势。结果表明，储藏12个月后，14号家系种子发芽率由86.67%下降到20.00%，下降了76.92%；11号家系种子发芽率由58.00%下降到8.00%，下降了86.21%；而50号家系种子发芽率降为0。整个试验中平均发芽率较高且下降较为平缓的3个家系为26号、17号、51号，其平均发芽率分别为75.00%、61.83%、61.67%。方差分析结果表明，光皮桦不同家系之间的种子发芽率差异极显著。关键词光皮桦；家系；种子；发芽率中图分类号S792.15文献标识码A文章编号1007-5739（2023）07-0114-03DOI：10.3969/j.issn.1007-5739.2023.07.033开放科学（资源服务）标识码（OSID）：StudyonSeedViabilityofDifferentBetulaluminiferaFamiliesJIANGBo1CHENGGuoyuan1FANGLejin2WANZhibing2*DINGYabin1（1ZhentouState-ownedForestFarm,JixiCounty,JixiAnhui245321;2SchoolofLifeandEnvironmentSciences,HuangshanUniversity,HuangshanAnhui245041)AbstractBetulaluminiferaisanexcellenttimbertreewithfast-growing,barrenresistant,strongadaptabilityandsuperiorquality,buttherearesomeproblemsinproduction,suchasdifficultyinseedcollection,smallseedsize,shortseedlifeandsoon.Inthisexperiment,theseedsof22familiesofBetulaluminiferawereusedasmaterials,theseedgerminationabilitywastestedonceamonthtoexplorethechangetrendoftheseedgerminationabilityofeachfamilyundertheconditionoflowtemperaturestorage.Theresultsshowedthatafter12monthsofstorage,theseedgerminationrateofNo.14familydecreasedfrom86.67%to20.00%(decreasedby76.92%),theseedgerminationrateofNo.11familydecreasedfrom58.00%to8.00%(decreasedby86.21%),andtheseedgerminationrateofNo.50familydecreasedto0.Inthewholeexperiment,therewerethreefamilieswithhighaveragegerminationrateandrelativelyslowdecline,namelyNo.26,No.17andNo.51,withaveragegerminationrateo...
