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Cultural media and hormones were selected for asymbiotic germination and shoot tip culture in vitro of D. densiflorum for commercial propagation.

为促进其规模化生产，探讨了密花石斛的无菌播种和茎尖培养中培养基种类和激素等配比。

The aim of the research was to establish asymbiotic germination and low-temperature in vitro conservation technique system of Cymbidium dayanum by using plant tissue culture technique to realize its rapid propagation and long-term conservation in vitro.

［目的］利用组培技术建立冬凤兰非共生萌发和低温离体保存技术，以达到快速繁殖和长期离体保存该植物的目的。

The ai mof the research was to establish asymbiotic germination and low-temperature in vitro conservation technique systemof Cymbidium dayanum by using plant tissue culture technique to realize its rapid propagation and long-termconservation in vitro.

利用组培技术建立冬凤兰非共生萌发和低温离体保存技术，以达到快速繁殖和长期离体保存该植物的目的。

With mature seeds of C. dayanum as explants, different media were selected to establish asymbiotic germination technique system With protocorms as materials, conservation, proliferation resumption and plant regeneration conditions were selected to establish low-temperature in vitro conservation technique system preliminarily. Mature seeds of C.

方法］以冬凤兰种子为外植体，选择不同培养基建立冬凤兰非共生萌发技术；同时利用原球茎为材料，选择低温离体保存，恢复增殖及植株再生条件，初步建立冬凤兰低温离体保存技术体系。

The asymbiotic germination indicated that the medium Hyponex No.1 was optimum for PLB formation when supplemented with potato juice, and optimum for PLB differentiation when supplemented with banana juice. Fresh sprouts were induced from the explant of the shoot tip cultured on the MS medium in the presence of BA 3.0 mg/L and NAA 0.2 mg/L.

结果表明：在花宝1号附加土豆的培养基上萌芽效果最好，原球茎发生率较高；分化阶段以花宝1号附加香蕉的培养基分化效果最理想，幼嫩茎尖在MS基本培养基上附加BA 3.0 mg/L与NAA 0.2 mg/L上可诱导出新芽。

The results showed that both two autotoxic substances exhibited allelopathic promotion at low concentration and allelopathic inhibition at high concentration on pepper seed germination and seedling growth.

结果表明：这两种自毒物质对辣椒种子萌发和幼苗生长具有低浓度促进，高浓度抑制的化感效应。

Allelopathic effects of vanillin and cinnamic acid, two eggplant autotoxic substances, on pepper seed germination, seedling growth and mycelium growth of Fusarium oxysporum f.sp with different concentrations were studied in laboratory and bioassay experiments by a simulative way.

运用模拟的方式，采用生物测定和室内培养的方法，研究了两种茄子自毒物质香草醛和肉桂酸各浓度对辣椒种子萌发和幼苗生长的化感效应，及其对辣椒枯萎菌菌丝生长的影响。

The results suggested that the decomposing substances after cotton stalks returned to soil have autotoxic effect. Cotton seed germination and photosynthesis physiological activities were affected by decomposed substances of cotton stalks.

表明棉花秸秆还田后分解产生的化学物质具有一定的自毒效应，对连作棉花种子萌发、抗氧化物酶活性和光合生理造成影响。

Laboratory and greenhouse experiments were conducted to determine if the autotoxic effect is responsible for continuous cropping obstacle of chrysanthemum " Gaoyataizi" and the autotoxic effects of different parts from continuous cropping chrysanthemum on seed germination and seedling growth, cuttings rhizogenesis and the growth of potted-chrysanthemum "Gaoyataizi".

为此本论文旨在以连作障碍典型品种之一的'高压太子'为材料，采用室内生测及温室盆栽对菊花的自毒作用进行如下研究探讨：自毒作用是否是导致菊花连作障碍的因素之一；菊花不同部位水浸液处理对自身种子萌发、幼苗生长、扦插生根及盆栽菊花生长及其重要生理生化过程的自毒效应。

The results indicated that the aqueous extracts from the litter of Picea schrenkiana had autotoxicity on its seed germination and seedling growth.

结果表明：天山云杉凋落物水浸提取液对其种子萌发和幼苗生长存在自毒作用。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！