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时间:2020-05-22
《连香树单叶生长动态及其相关性研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、38甘肃农业科技2014年第5期GansuAgr.Sci.andTechn.No.52014连香树单叶生长动态及其相关性研究郭瑛,赵秋玲。,董菊兰(1.甘肃省小陇山云坪林场,甘肃两当742403;2.甘肃省小陇山林业科学研究所,甘肃天水741022)摘要:对连香树一年生实生苗一个展叶时期内的单叶生长动态及其叶绿素含量相关性进行了研究,结果表明,单叶叶面积增加持续时间为22d,平均增长幅度1.98cmVd,叶长、叶宽、叶柄长、叶绿素含量、成熟叶面积的发育趋势为8月份>74份>6月份,展叶速率在展叶期间呈现波动变化,最高每天达41.
2、4%。成熟叶面积越大,其展叶速率越慢。对展叶速率与叶长、叶宽、叶柄长、叶面积、叶绿素含量的相关分析显示,在P=-0.01水平上,展叶速率与叶长、叶宽、叶柄长、叶面积、叶绿素含量呈极显著负相关,叶面积与叶长、叶宽、叶柄长、叶绿素含量呈极显著正相关。叶面积与生长时间的关系符合S型曲线模型。关键词:’连香树;展叶速率;叶面积;相关性中图分类号:$688文献标识码:A文章编号:1001—1463(2014)05—0o38—04i:10。3969/i.issn.10ol一1463.2O14.O5.0lStudyonDynamicCompa
3、rationofSingleLeafandTheirCorrelationofCercidiphyUumjaponicumGUOYin,ZHAOQiu-ling。,WANGDa-wei(1.YunpingForestFarmofXiaolongshan,TianshuiGansu742403,China;2.XiaolongshanInstituteofForestAgriculturalSciences,TianshuiGansu741022,China)Abstract:Dynamiccomparationofsinglel
4、eafinfast-growingperiodandtheircorrelationofchlorophyllcontentofCercidiphyllumjaponieumofoneyearoldseedlingswasstudied,includingtheindexesofleaflength,leafwidth,petiolelength,leafarea,leafthicknessandchlorophyllcontent.Theresultsshowedthattheincreasingdurationofavera
5、geleafareawas22d.Theaveragegrowthrate1.98cm2/d。Thedevelopmenttrendofleaflength,leafwidth,petiolelength,leafgreaandchlorophyllcontentwasAugust>July>June.Thechangeoftheleafexpansionratetookwasfluctuating,thehighestvaluereachedto41.4%perday;thelargerofmatureleafarea,the
6、sloweroftheleafexpansionrate.Thecorrelationanalysisbetweenleafexpansionrateandleaflength,leafwidth,petiolelength,leafareaandleafthicknessshowedthattheleafexpansionratehadverysignificantnegativecorrelationwithleaflength,leafwidth,petiolelength,leafareaandchlorophyllco
7、ntent,atP=0.01level,leafareahasverysignificantpositivecorrelationmleaflength,leaf,width,petiolelengthandchlorophyllcontentatP=O.Ollevel,therelationshipbetweenleafareaofkatsuratreeandgrowthtimedidaccordwithScurvemodelindiferentfast-growingperiod.Keywords:Cercidiphyllu
8、mjaponicum;Leafexpansionrate;Correlation叶片作为植物的同化器官,直接影响植物的中国和日本的第三纪孑遗植物,是一种古老稀有光合、呼吸、水分代谢以及养分运输等主要生理的珍贵树种,具有多种开发价值的野生植物。现活动,其形态、解剖
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