【作者】 李华；

【导师】 刘雅莉； 张宏义；

【作者基本信息】 西北农林科技大学 ， 园林植物， 2008， 硕士

【摘要】 丁香因枝叶繁茂、花色淡雅而清香、耐寒、耐旱及土壤要求不高,因此是世界重要绿化、美化、香花树种。丁香品种繁多,一些品种之间性状比较相近,容易混淆。通过对包头地区栽培的十四个品种进行生长发育习性指标的调查和统计,结果表明:1、不同品种的叶芽发芽情况差异很大,花叶丁香和羽叶丁香发芽较晚,比暴马丁香发芽期晚将近一个月。其他几个品种发芽去相差不多,几乎都在三月下旬到四月上旬。花叶丁香和羽叶丁香的发芽期与展叶期相接较近,约一周左右,其余的品种发芽期与展叶期间隔较远,约十五天左右。2、园内丁香开花最早为紫丁香,约在5月1日左右,开花最晚的为暴马丁香,约6月16日左右,其花期可延续在7月9日左右,园内丁香的群体花期可达70天左右,3、对开花期与花期接近的紫云丁香、罗兰紫丁香、波峰丁香、什锦丁香、长筒白丁香、香雪丁香、紫丁香7个品种的花期做了单因素方差分析,品种间差异显著,香雪丁香、波峰丁香与什锦丁香差异不显著,其花期最长。罗兰紫丁香与香雪丁香差异不显著,罗兰紫丁香、长筒白丁香与紫丁香差异不显著。紫云丁香、长筒白丁香与紫丁香差异不显著,其花期最短。4、十四个品种中只有紫丁香、暴马丁香、小叶丁香、辽东丁香和红丁香正常结实,而其他种类不结实或偶尔结实。5、丁香的落叶时间比较短,通常只有3到5天左右。丁香叶片全部能够自然脱落,这也表明,它们能够感知到光周期变化,对包头地区的气候状况有较强的适应能力。更多还原

【Abstract】 Characterized by lush branches,elegant colors and being fragrant,tolerant to cold and drought,demanding less from soil,Syringa is the major species for reforesting,beautification and fragrance in the world.It’s easy confused of different varieties because of similar characters between them.Therefor,the index of the growing features of 14 species of Syringa in Baotou city Inner Mongolia have been explored and examined,the following shows the results.1.Sprouting of different species leaf buds are very differently.S.persica L.and Syringa pinnatifolia Hemsl sprout late,almost one month later than Hong Syringa reticulata. Sprouting time of other species are almost similar from late March to early April.The sprouting and leafing time interval for S.persica L.and Syringa pinnatifolia Hemsl follows quite closely which is one-week or so,while the time interval for other species quite distantly which is about 15 days.2.S.oblata flowers earliest,on May 1st or so,while S.reticulate var.amurensis at the latest,on about June 16th,and its flowering time can last till July 9^th.Group flowering time for Syringa in garden can last for about 70 days3.single-factor variance analysis of 7 species of S.oblata ’.Zi Yun’,S.oblata ’Luo Lan’ S.oblata ’Buffon’,S.chinensis will,S.oblata var affinis ’Chang Tong’,S.oblata ’.Xiang Xue’,S.oblata Lindl has been made in terms of their flowering periods.The result shows variance in different varieties,but the variance is not noticeable between S.oblata ’.Luo Lan’ and S.oblata ’.Xiang Xue’,nor is among S.oblata ’.Xiang Xue’,S.oblata varaffinis ’.Chang Tong’ and S.oblata Lindl,the same is true with S.oblata ’Zi Yun’,S. oblata var affinis ’.Chang Tong’ and S.oblata Lindl,which have the shortest flowering periods.4.Among the 14 species,only S.oblata Lindl,S.amurensis Rupr,S.microphylla Diels,S. wolfii Scheid and S.villosa Vahl normally bear fruits,while the rest either bear no fruits or once in a while.5.The defoliation of Syringa is short,only lasting about 3 to 5 days.All the leaves could fall down naturally,which indicates that it can sense photoperiod,and adapts climate in Baotou更多还原