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The test of host range showed SYAU-06 strain was safe to eighteen species of crops and vegetable besides corn and sorghum had slight injury response.Among twenty-seven species weeds from fourteen family the dayflower was most sensitive to the fungi,redroot amaranth and emarginated amaranth was slightly sensitive as well as goosefoot.

SYAU-06菌株寄主范围测试表明在供试的7科18种大田作物和蔬菜中仅玉米和高粱叶片有轻微的伤害反应，在供试的14科27种杂草中，对鸭跖草高度敏感，对苋科的反枝苋、凹头苋和藜科的藜轻度敏感。

And Cucumis sativus L. were tested by bioassay-guided separation. The extracts from P. tomentosa flower with ethanol were extracted with petroleum ether, ethyl acetate and n-butanol. The inhibition rate of the ethyl acetate extract to growth of the 3 kinds of plant radicel were 99.89%, 63.53% and 32.74% respectively at 0.5 mg/mL concentration, and that of petroleum ether were 76.30%, 56.17% and 23.36%.

绒叶泡桐Paulownia tomentosa花乙醇提取物依次用石油醚、乙酸乙酯、正丁醇和水萃取后进行活性测定，结果表明，石油醚萃取物在浓度为0.5mg/mL时，对反枝苋、生菜和黄瓜种子胚根生长的抑制率分别为76.30%、56.17%和23.36%；乙酸乙酯萃取物在浓度为0.5mg/mL时，对反枝苋、生菜和黄瓜种子胚根生长的抑制率分别为99.89%、63.53%和32.74%。

The article summarizes Amaranthaceae plants'characters on botany,species and distribution,elaborates their present situation of exploitation and problems,and explores their potentional values of research.

本文概括了苋科植物的植物学特征、种属特性及其分布特点，并阐述了苋科植物的开发利用现状及其存在的问题，进而对其前景进行展望，探索了其潜在的研究价值。

The article summarizes Amaranthaceae plants' characters on botany, species and distribution, elaborates their present situation of exploitation and problems, and explores their potentional values of research.

概括了苋科植物的植物学特徵、种属特性及其分布特点，并阐述了苋科植物的开发利用现状及其存在的问题，进而对其前景进行展望，探索了其潜在的研究价值。

The results indicated that the values of EC50 of compound 1# was 0.019 mg·L-1, against germination of Amaranthus retroflexus.

测定了1#化合物对反枝苋的抑制活性，结果表明，1#化合物对反枝苋种子萌发的EC50 分别为0.019mg·L-1。

Objective: To investigate the antigenic components of Amaranthus spinosus pollen, and to lay theoretical base for the purification of Amaranthus spinosus pollen allergens and the standardization of allergenic vaccine.

目的：分析刺苋花粉的抗原成分以及刺苋花粉特异性变应原组分，为刺苋花粉变应原的纯化和标准化变应原疫苗的研制提供理论依据。

There are 13 species belonging to Amaranthus at present in China, and Grain amaranth is a general name of the plants with their seeds, which are of major utility.

我国有苋属植物13种，籽粒苋是以籽实利用为主的一类苋植物种和品种的总称。

The determination of cytokinin levels is a primary and basic approach in the cytokinin studies. The Amaranthus betacyanin bioassay was modified for the rapid and convenient determination of cytokinin activity. Meanwhile, the procedures for quantitative analyses of cytokinins by HPLC and ELISA were estabolished, and these gurantee the analyses of cytokinin levels with high precision.

在细胞分裂素的活性测定中，通过改进尾穗苋苋红素合成法建立了一种简便、准确的生物试法，同时还建立了根据物理化学和免疫学原理而测定细胞分裂素的HPLC和ELISA方法，使得细胞分裂素的定量更加准确。

Thirdly, we also examine the effect of these extracts on maize seed germination rate, maize seeding height and fresh weight, and the results show that three extracts are safe to maize at the concentration of 1:20, with a inhibit rate under 4 %.We further identified and purified organic acids, alkaloids hydroxybenzenes and neutral materials from extract and examined their effects on Amaranthus retroflexus L. seeds.

实验结果表明在干样：水为1：50以内，这三种向日葵的叶片提取液对反枝苋种子萌发和幼苗株高、鲜重及出叶数的抑制效果都非常显著；随着提取液浓度的下降抑制作用也呈明显的下降趋势；通过实验数据比较，这三种向日葵叶片提取液对反枝苋种子萌发抑制和对反枝苋幼苗株高、鲜重及出叶数的抑制效果略有差异。

Six different deletion and insertion mutants of BBSV-X were constructed and these were inoculated to Chenopodium amaranticolor. The preliminary results show that the sat-RNA could enhance symptom of BBSV-X and its insertion mutants on Chenopodium amaranticolor, but the pathogenicity of the CP deletion mutants was reduced.

构建了BBSV-X基因组6个缺失和插入突变体，将它们的体外转录物单独或与sat-RNA一起混合接种苋色藜，初步实验结果表明，sat-RNA能增强全长BBSV-X基因组及含全长基因组的突变体对苋色藜所致的症状，但减轻CP缺失突变体的致病性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。