Vegetative Reproduction through Green Cuttings of the Introduced Form <i>Weigela florida</i>f. “<i>Bristol ruby</i>” (Caprifoliaceae) in the Conditions of the Tashkent Botanical Garden (Uzbekistan)

For the first time, work was carried out on the vegetative reproduction of Weigela florida f. “Bristol Rubru” (Caprifoliaceae) was introduced into the Tashkent Botanical Garden (Uzbekistan) through green branches. As a result of the research conducted, it was noted that the vegetative reproduction possibilities of the “Bristol Ruby” form of Weigela florida were high. When placed on stimulants of two types (kornevin, heteroauxin), it became known that kornevin stimulants are effective in taking root. It was found that the effective way to multiply this form by green branches in a vegetative way—when placed on the stimulator of kornevin from the middle part of the rod, the indicators of root extraction of the cuttings were 93.3%, which is more effective than other options. When vegetative reproduction of this decorative form, it is recommended that the seedlings come to the standard state in 3 - 4 years and the root extraction indicators are high—this is its use as the second row shrubs in the case of growing on strongly saline soils in the conditions of Uzbekistan. The cultivation of green cuttings of the form in the fog showed that they are more effective than in the open ground.

锦带花属2个新品种

描述了2个锦带花属新品种,即贵妃锦带（Weigela florida‘Royal’）和宝石锦带（Weigela florida‘Ruby’）。二者相近似,区别在于贵妃锦带植株稍高,株高1.5-2.0 m,花为尖晶玉红色,叶色暗绿;宝石锦带植株较矮,株高1.0-1.6 m,花为丹紫红色,叶片金黄色。这2个新品种均具有观赏特异性,抗逆性强,花期早且长等特性。

两种锦带花品种对干旱胁迫的生理响应

以‘金亮’锦带(Weigela florida‘Goldrush’)和‘宝石’锦带(Weigela florida‘Ruby’)为研究对象,利用20%聚乙二醇-6000(PEG-6000)人工模拟水分胁迫环境,设置4个胁迫梯度(持续0、6、12、24 h),研究在胁迫过程中植物叶片的相对含水量、细胞膜透性、丙二醛质量摩尔浓度、蛋白质和可溶性糖质量分数的变化。结果表明:经过PEG-6000处理后,随着胁迫时间的增大,叶片电导率呈上升趋势,叶片相对含水量均呈逐渐下降的趋势;‘金亮’锦带蛋白质质量分数呈现先升高后降低的趋势,而‘宝石’锦带则呈现先降低后升高最后又降低的趋势;‘金亮’锦带可溶性糖质量分数则呈逐渐升高的变化趋势,‘宝石’锦带可溶性糖质量分数则均呈先升高后降低的趋势,‘宝石’丙二醛质量摩尔浓度则均呈现先降低后升高的趋势。

锦带花杂交育种及新品种选育

为丰富黑龙江省园林绿化树种种类及生物多样性,提高园林绿化景观水平,从1999年至2004年先后从北京植物园引种红花色系花灌木:红王子锦带(Weigela florida cv. Red prince)和金亮锦带(W. florida cv. Gold Rush),利用抗性较强的栽培种与花色艳丽的彩叶引进品种进行杂交育种实验,选育出优良新品种贵妃锦带(W.florida cv. Royal)和宝石锦带(W. florida cv. Ruby)。两品种具有抗寒性强、生长快、冠形优美、花色艳丽、观赏期长且无病虫害和繁殖容易等优良特性,并建立一套完整的引种、杂交育种和选育措施,现已在园林绿化中推广应用,获得了较好的社会、生态及经济效益。