茎

The results showed that the POD activity was higher in the sporophyll than that in the stems and leaves in which the POD activities were weak from bottom to top in native plant. For the Japanese plant, the POD activities of the stems and leaves were the same in all positions. However, the activity was slightly higher in mid-portion of a leaf than that in stems. The high enzyme activities were observed in mid-bottom stems in the half-bred plant, and the activity was higher in bottom leaf than that in mid-top leaf.

结果表明：3个裙带菜群体的POD同工酶其孢子叶活力都相对强于其它部位；日本裙带菜茎和叶的各部位POD酶活力相同，但叶中部的酶活力稍强于茎；自育裙带菜茎底部和茎中部的POD酶活力较强些，而叶底部的酶活力较叶中部和顶部的强；本地裙带菜的茎和叶由底部到顶部POD酶活力逐渐变弱。

The effects of different plant densities on flag leaves chlorophyll content,SOD activity and MDA content after anthesis in stronggluten wheat interplanted in paddyfield were studied.

本试验在江苏淮北地区设计不同密度试验，研究其对稻田套播强筋小麦花后剑叶叶绿素含量、SOD酶活性和MDA含量的影响，结果表明：随花后生育进程推移，叶绿素含量呈下降趋势，且随密度增加，下降幅度增大；花后单茎干物质积累量和单茎籽粒产量亦随密度增加而下降，二者呈极显著负相关；随花后生育进程推移，剑叶SOD酶活性呈单峰曲线变化，可用二次曲线方程模拟，在花后1416 d达峰值，且随密度增加峰值出现时间提前，峰值数值呈先上升再下降的变化特征；随花后生育进程推移，剑叶MDA含量呈上升的变化特征，且随密度增大，数值变大；花后35 d剑叶SOD酶活性与花后单茎干物质积累量和单茎籽粒产量呈极显著正相关，而MDA含量与花后单茎干物质积累量和单茎籽粒产量则呈显著或极显著负相关。

Results in those 30 samples, the styloid process showed with high quality inⅠgroup is 25,in Ⅱ group is 27,about length measurement, as a whole, the difference of the two groups is little.

结果 30例中茎突能清晰完整显示的常规茎突侧位有25例，而用口腔全景机拍摄的茎突有27例，在茎突长度测量方面，从两种摄影方法拍摄的茎突影像上测得的茎突长度无显著的统计学差异。

Stem erect, frequently rhizomatous, or plants tuberous and either acaulescent or shortly stemmed, rarely lianoid or climbing with adventitious roots, or stoloniferous.

茎直立，经常为根状茎，或者块茎状或无茎或有短茎，很少藤本或者攀援有不定根，或者有匍匐茎。

There were close relation and harmonies among the quantities characters that were significantly hereditarily correlated with tumorous stem yield. High yield breeding combining with strong ecological adaptability and good quality should be largely based on later maturity, tumorous stem diameter, whole plant weight and higher ratio of stem and leaf.

瘤茎产量与营养生长期、瘤茎膨大期、瘤茎横径、茎/叶、株鲜重呈极显著遗传正相关，与菜形指数、菜皮百分率呈极显著遗传负相关，与其余性状相关均未达显著水平；与瘤茎产量显著相关的性状间关系密切，有很好的协同性，分析提出茎瘤芥育种选择熟性晚、瘤茎横径大、茎/叶高和植株个体较大的品种，可实现品种产量高、生态适应性强和瘤茎品质较佳等三者的协调统一。

Tumorous stem yield was only significantly hereditarily positively correlated with vegetative duration, developmental duration, ratio of stem and leaf, horizontal length and whole plant fresh weight, negatively fur percentage and tumorous stem index. There were close relation and harmonies among the quantities characters that were significantly hereditarily correlated with tumorous stem yield. High yield breeding combining with strong ecological adaptability and good quality should be largely based on later maturity, tumorous stem diameter, whole plant weight and higher ratio of stem and leaf.

瘤茎产量与营养生长期、瘤茎膨大期、瘤茎横径、茎/叶、株鲜重呈极显著遗传正相关，与菜形指数、菜皮百分率呈极显著遗传负相关，与其余性状相关均未达显著水平；与瘤茎产量显著相关的性状间关系密切，有很好的协同性，分析提出茎瘤芥育种选择熟性晚、瘤茎横径大、茎/叶高和植株个体较大的品种，可实现品种产量高、生态适应性强和瘤茎品质较佳等三者的协调统一。

The stalk length, internodal length and stalk weight significantly increased, the number of millable stalks per plot raised extremely significantly, the growth speed accelerated and the yield increased by 23.2%, respectively, of regenerative plants from the seedcanes with HWT, compared with those of RSD-infected seedcanes without HWT, but their qualities in maturity phase were similar.

与未经热水处理种茎再生植株相比，经热水处理的粤糖00-236感病种茎再生植株的茎长、节间长度、一茎重显著增加，有效茎数极显著增多，生长速度加快，蔗茎产量增加23.2%，但成熟期甘蔗品质几乎无差异。

The green stem, big leaf, few branch, mauve flower type and the purple stem, big leaf, few branch, purple flower type were classified into one class. The green stem, small leaf, multibranch, mauve flower type, the green stem, big leaf, multibranch, purple flower type, the green stem, small leaf, multibranch, mauve flower type, and the purple stem, small leaf, multibranch, purple flower type were classified into another class.Conclusion The artificially cultivated S.

其中，绿茎、小叶、少分枝和紫色花类型与普通类型各自聚为一类，绿茎、大叶、少分枝和淡紫色花类型与紫红茎、大叶、少分枝和紫色花类型聚为一类，绿茎、小叶、多分枝和淡紫色花类型，绿茎、大叶、多分枝和紫色花类型，绿茎、小叶、多分枝和淡紫色花类型与紫红茎、小叶、多分枝和紫色花类型聚为一类。

The content of Z+ZR rose obviously and descended rapidly before and when gall started on swelling, respectively. The content of IAA in leaves was descending from anaphase to telophase of gall's swelling. The content of ABA in leaves was raised just before gall's swelling and that in sheathes was raised in anaphase of the gall' swelling, but there's no visible change in culm. There was no obvious change of GA 3 content in all parts and during growth and development.

其中 Z+ZR 含量在肉质茎膨大前即已明显上升，膨大开始后显著下降； IAA 含量在肉质茎膨大后期至末期才出现下降；叶片内 ABA 含量在肉质茎膨大前即开始上升，叶鞘内 ABA 含量在肉质茎膨大后期上升，茎尖内则无明显变化；各部位 GA 3 含量在整个生育期内无明显变化。

Result:Characteristics of the tangentical longitudinal section of stem with resin and surface view of leaves were elucidated.Besides xylem vessels and fibers of the stem,it was found that the red resin also exists in the cortex parenchyma cells of the stem and the medulla and xylem of the root.According to the HPLC fingerprint analysis result of the stems with and without resin,a number of flavones and stilbenoids were detected in the stem in which resin appeared after it wounded.

结果：阐明了含树脂茎的纵切结构以及叶的表面观特征；除了茎木质部导管和纤维中有树脂外，发现剑叶龙血树受到损伤之后在茎皮层薄壁细胞、根的髓部和木质部亦有树脂的分布；含树脂茎和无树脂茎的指纹图谱显示剑叶龙血树茎在形成树脂后的化学成分中出现了较多的黄酮类、茋类成分。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。