茎

The pathogenicity of 19 strains of Alternaria alternata isolated from Eupatorium adenophorum was studied. 5.8S rDNA, ITS1 and ITS2 sequences of 22 strains from crofton weed and other plants were analyzed.

对分离自紫茎泽兰的19个链格孢菌菌株的致病性进行了比较研究，并对这19个菌株和其它来源的3个菌株的5.8S rDNA及其两侧的ITS1区和ITS2区进行了序列分析。

The results indicated that the treatment of irradiation restrained the growth and differentiation of protocorm, especially to roots.The LD50 is 67.23Gy, because the protocorm is a integrate embryoids and higher tolerance was found. Ploidy analysis showed that most of aberrant seedlings go with the change of DNA and they were not euploid. When the plants trearted by irradiation, some of aberrant seedlings appeared stem forfication, and leaves appeared chlorophyll-deficient or green-white.,probably due to some genes' expression or closing.

结果表明：辐照处理对种胚原球茎的生长和分化有抑制作用，尤其是对根的抑制更为明显；由于种胚原球茎的完整性好，耐受性强，其辐照半致死剂量(LD50)为67.23Gy；流式细胞分析表明，大多数外部形态发生改变的植株其细胞内DNA的倍性发生了改变，出现相当多的非整倍体；此外，辐照产生的变异苗出现茎分叉、叶片缺绿或白绿相间等现象，可能是由于某些基因的表达与关闭引起的。

This molecule expansion also takes place in other hot areas between the exhaust valve stems and valve guides.?

这种分子扩张也发生在其他热点地区之间的排气阀茎和阀指南。？

Result: The inductivity of leaves was the highest about 87.5%, followed with the stem section and leafstalk; The inductivity of nutrient medium such as MS, B5 callus was higher than the ones like H, SH and the White callus amended one; It was found that low-grade Phvalue benefits the growth of callus. The experiment result showed that different pH showed little difference in quality. The best condition of culture was 25 ℃in temperature. Conclusion: The best culture condition for callus was the leaves as explantation.

结果：叶片的诱导率最高，为87.5%；茎段次之，叶柄较差；培养基MS，B5愈伤组织诱导率较高，达到了80%以上，高于培养基H，SH和改良White的愈伤组织诱导率；偏低的pH对愈伤组织生长有利，出愈率高，但从愈伤组织生长质量方面看，不同pH差异不明显；愈伤组织诱导最适温度为25 ℃。

During most of the drying stage, the inner temperature of the castock basically remained around 70℃.An exponential decay equation can be used to simulate the dynamic drying process of the high moisture MSW.

在白菜茎整个干燥过程中，其内部的温度基本上维持在70℃左右；指数衰减方程能够较好地体现焚烧炉条件下高水分垃圾的干燥规律。

The growth dynamics of leaf length on stem and tiller could be described with a logistic model, leaf width with conic equation, and leaf shape with exponential function and quadratic equation. The effects of nitrogen and water conditions on leaf growth were quantified by the effective values of leaf nitrogen concentration and water content.

模型采用Logistic方程描述了水稻主茎及分蘖叶片随生长度日的动态伸长过程；利用二次曲线描述了叶宽随GDD的动态变化过程；分别用幂函数和一元二次方程描述了叶形的动态变化过程；另外，以叶片氮素和水分因子分别描述了不同水氮水平对叶片形态建成过程的定量影响。

The extrafloral nectaries in Cerasus plants located on the base of the petiole or edge of the blade, and belonged to stalk nectries. The nectaries consisted of epidermis, nectariferous cells and vascular bundle.

结果表明，樱属植物花外蜜腺位于叶柄基部或叶片边缘处，属于茎轴蜜腺，是由条状纹饰的分泌表皮、产蜜组织和维管束构成。

Perennials, strongly rhizomatous, shoots extravaginal.

多年生植物，强烈根状茎，嫩枝extravaginal。

Clematis texensis flowers have unusual shape of an elongated jug or an egg, open at the top and made up of 4 fancifully twisted tepals. The outer side of the tepals can be anything from deep red to orange red, and the inner side is most frequently creamy yellow or pink-red but you can also find the scarlet ones. Leaves are blue-green. The plant is a climbing semi-perennial - only the base of the stems is woody. Stems reach up to 3 m and twine around the supports by leaf petioles

Clematis texensis的花有奇特的形状，有长水壶状或鸡蛋状，在顶端开花，花朵由4个反卷花瓣组成，花瓣外部从深红色到橙红色，内部一般是乳脂状的黄色或粉红色，也有鲜红色的，叶片青绿色，攀援植物，植株基部是木质化，茎长可达3米，通过叶柄缠绕支撑物生长。

Plant a rhizomatous herb; stamens 9 (3 per fascicle), filaments united for 1/2 or 2/3 of their length; petals white or pink; leaves with glandular dots only.

植株一根状茎的草本；雄蕊9(每束簇3)，去1/2的或的花丝合生其长度；花瓣白色或粉红色仅叶具腺点。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐