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| 1 | 下一次绿色革命:基于植物群落设计重塑城市生境丰度显示文摘气候变化、大规模物种灭绝、快速城市化以及工业土地利用极大影响了人们的生活品质,并削弱了地球上所有生命所依赖的核心生态系统服务功能。保护城市外围的自然土地已不足以确保人类自身的生存。为减少负面的环境影响,修复必不可少的生态系统服务,重塑人与自然元素的联系,并创造更健康、更具韧性的城市景观,有必要在城市和工业景观中采用具有超高生态功能并能引起公众强烈共鸣的种植方式,从根本上转变城市景观规划设计方法。介绍了美国Phyto景观设计工作室应用的基于植物群落的种植设计方法,解释创新的种植系统如何重建城市多样而丰裕的生境。阐述了植物之间、植物与人、植物与更大的环境如何联系的3个核心原则,通过案例说明该种植模式的应用,并讨论使其适应中国城市独特环境和社会政治背景的策略。 | 吴竑 王鑫(译) | 2020 | 风景园林2020，27，4： | 11 |
| 2 | Induction and characterization of polyploids from seeds of Rhododendron fortunei Lindl.显示文摘Most Rhododendron species are ornamental flowering species widely distributed in Asia,North America,and West Europe.Rhododendron fortunei,one of the endemic Rhododendron species in China,has beautiful flowers with bright colors and is being exploited to meet the needs of the flower market.Polyploid plants usually show superiority in growth,disease resistance,and adaption over their diploid relatives.Here,we report the first case of polyploid induction in R.fortunei.In order to induce polyploidy in R.fortunei,germinating seeds were treated with different concentrations of oryzalin for 16 h.By evaluating ploidy level with flow cytometry,a total of 34 polyploid R.fortunei lines,including 27 tetraploid lines and seven octoploid lines,were obtained.A comparison of treatments indicated that 7.5 mg L^-1 oryzalin was the optimal concentration for polyploid induction in seeds of R.fortunei.Compared with diploid plants,tetraploid and octoploid plants exhibited slower growth rates and had thicker and rounder curled leaves with more leaf epidermal hairs.Moreover,larger stomata at lower density were also observed in the leaves of polyploid plants.Chlorophyll contents were also significantly increased in polyploid plants,which leads to a darker green leaf color.Both small and large individuals exhibiting the same characteristics were observed among the obtained tetraploid plants.Overall,our study establishes a feasible method for polyploid induction in R.fortunei,thus providing a basis for breeding new R.fortunei varieties. | MO Lan CHEN Jun-hao CHEN Fei XU Qiang-wei TONG Zai-kang HUANG Hua-hong DONG Ren-hui LOU Xiong-zhen LIN Er-pei | 2020 | Journal of Integrative Agriculture2020，19，8： | 3 |
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