堇叶山梅花营养缺乏症状的研究

通过石英砂培法,研究了堇叶山梅花幼苗在缺N、P、K、Ca、Mg条件下的缺素症状及生理变化情况。结果表明:在N素缺乏时最先表现出叶边缘有黄色斑点症状;K素缺乏处理15 d表现生长良好,但处理后期40 d左右最先出现缺素焦枯现象,说明该植物前期需钾肥相对较少;缺Ca处理的堇叶山梅花新叶先表现出轻微失绿,有的叶尖干枯且呈螺旋形,其它4种元素亏缺的植株均是老叶先表现症状;N、P、K、Ca、Mg 5种营养元素缺乏的植株叶绿素含量、可溶性蛋白质含量均低于全素(CK)处理,该研究结果可作为堇叶山梅花苗期营养诊断的依据。     

东北山梅花株间开花生物学特性的观测与研究

以磐石市江南林场施业区内生长的东北山梅花为对象,观测其开花生物学特性,结果表明:在2016年气候条件下,群体花期为31 d,平均单株花期为27 d,平均盛花期为14 d;单花序着生小花4~19枚,以8~10枚者居多,单花序开放时间为12~14 d,单花开放时间为8~9 d;花白色纯正,散发淡雅花香。花期前≥10℃的有效积温为631℃,开花期间为586℃;开花期间共有雨天24 d。     

不同植物激素处理对东北山梅花种子发芽的影响

用赤霉素、奈乙酸和吲哚乙酸对东北山梅花种子进行浸种处理,结果表明：奈乙酸和吲哚乙酸对东北山梅花种子发茅有明显促进作用,它们的最适浓度分别为40mg／L和20mg／L,吲哚乙酸的处理效果最好。植物激素的不同浸种时间对东北山梅花种子发芽也有明显影响,奈乙酸和吲哚乙酸的最佳浸种时间分别为24h和50h。     

土壤镉污染对4种北方阔叶树根系生理生化指标的影响

[目的]研究镉污染对4种植物根系生理生化指标的影响。[方法]采用盆栽方法研究了不同浓度镉处理对白牛槭、刺玫果、金银忍冬和东北山梅花4树种根系生理生化指标的影响。一个生长季结束后收获苗木,测定各项指标。[结果]随着土壤中镉处理浓度的增大,4树种新根生物量、根系活力、SOD活性均逐渐降低,MDA含量逐渐上升,4树种的变化幅度不同。[结论]刺玫果和东北山梅花的抗镉污染能力优于白牛槭和金银忍冬。     

Clone selection of woody ornamentals in Finland

Fifty clones of the genera Forsythia, Hydrangea, Lonicera, Philadelphus and Viburnum were cultivated in comparative field trials at five sites in Finland in 1989–93. The aim was to find the hardiest and the most valuable clones to be recommended for landscape gardening. The evaluation covered about 30 traits which were recorded annually. Most attention was paid to winter‐hardiness, resistance to diseases and pests, and ornamental value. The data were analysed using both statistical and non‐statistical methods. A combination of these proved to be a successful method for selecting the clones with the highest value for production. Nine clones were selected as recommendable clones. The Hydrangea paniculata cultivars ‘Grandiflora’, ‘Praecox’ and ‘Mustila’ were found to be valuable and recommendable. Several Lonicera clones succeeded well and were renamed. Three clones were selected as being suitable for different purposes: L. tatarica ’Sanna’ suits well for hedges, L. x bella ’Dropmore’ is white‐flowered, and L. x bella ’Sakura’ has a special growth habit. A true‐to‐type Philadelphus pubescens clone was renamed ‘Tuomas’ and an abundantly blossoming and hardy P. lewisii hybrid was renamed ‘Tähtisilmä’. Finnish Viburnum opulus clones representing a hardy type with plenty of blossoms were renamed ‘Pohjan Neito’.     

不同培养基及贮藏条件对山梅花属植物花粉生活力的影响

以欧洲山梅花(Philadelphus coronaries Aureus)、庆典山梅花(Philadelphus‘Galahad’)、东北山梅花(P.schrenkii Rupr.)、京山梅花(P.pekinensis Rupr.)4个山梅花植物为试材,采用正交试验方法对影响花粉生活力的3个因素(蔗糖、硼酸和培养温度...