共查询到20条相似文献，搜索用时 375 毫秒
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菜药兼用植物—紫苏及其栽培技术 总被引：1，自引：0，他引：1
菜药兼用植物－紫苏及其栽培技术１０００８１北京市农林科学院蔬菜研究中心吴蔚张宝海饶璐璐紫苏（ＰｅｒｉｌａｆｒｕｔｅｓｃｅｎｓＬ．），英文名为Ｐｅｒｉｌａ，别名荏、赤苏、白苏、香苏等，为唇形科一年生草本植物，具有特异的芳香，原产中国，如今主要分布于印... 相似文献
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采用幼苗植株和离体叶片两种接种方法对10个甜瓜品进行抗白粉病鉴定,结果表明,离体叶片接种鉴定结果与幼苗植株接种法鉴定结果相一致,均把10个甜瓜品种划分为3个类型,即感病品种、中抗品种,高抗品种。其中齐甜一号、龙信5号、银蜜、玉脆被划为感病品种;3-2-2、Esteen、Topmark、甜帅为中抗品种;16H、N53为高抗品种。相同类型品种之间抗病性差异不显著。但是不同类型品种之间存在着显著性差异。两种鉴定方法虽在病情指数上有些波动。但不影响划分类型。离体叶片接种法快速、简便、结果可靠。 相似文献
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Sea buckthorn (Hippophae L.) is a woody, outcrossing dioecious pioneer plant, being widely planted as a new berry crop with rich nutritional and medicinal compounds, as well as a means of prevention of soil erosion. Inter simple sequence repeat (ISSR) markers were generated in 219 plants of 40 cultivars from China and other countries, representing two species of Hippophae salicifolia and Hippophae rhamnoides that includes two subspecies (ssp. mongolica and ssp. rhamnoides) and intraspecific hybrids between ssp. mongolica and ssp. sinensis. Fifteen selected ISSR primers generated 385 bands with an average of 25.6 bands per primer. Thirty hundred and eighty-five bands were used to generate a Dice's coefficient matrix of pairwise comparisons between individual ISSR profiles. Cluster analysis based on this matrix showed clustering of plants into groups which was in good agreement with their taxonomic classification. The results also revealed the presence of different cultivars with the same name, identical cultivars but with a different name and the genetic relationship of cultivars with unknown parentage to those with known parentage. Our data will be helpful in collection and conservation of sea buckthorn germplasm and potential hybrid strategy for breeding. 相似文献
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一种药用菌——虎乳灵芝学名的鉴定 总被引：2，自引：0，他引：2
虎乳灵芝是一种民间的药用真菌,香港的中医用其菌核来治疗肝癌、慢性肝炎、胃病,但还不知道其正确的学名。分类研究表叫,虎乳灵芝开不是灵芝,而是一种多孔菌,学名是Polyporus rhinocerus Cooke[=Lignosus rhinocerus(Cooke)]Ryv.,隶属于真菌门,担子菌亚门,层菌纲,非褶菌目,多孔菌属或孤苓属。 相似文献
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Two field experiments were carried out to investigate the effect of method of propagation (including two proposed new methods) and plant density on the growth, mineral uptake and yield of dasheen (Colocasia antiquorum, Schott.).Planting different pieces of “seed” resulted in a higher percentage germination, higher percentage efficiency of solar energy conversion and better growth characters of the plant, in the order: cormel, apical, half-apical, corm piece and quarter-apical piece, respectively.Increasing the plant density decreased the growth characters of the plant and increased the percentage efficiency of solar energy conversion.The nitrogen, phosphorus and potassium concentrations were not affected by types of dasheen seeds, whereas the absolute amount per plant followed the same pattern of change as the dry matter content.Distance between plants had no statistically significant effect on the concentrations of nitrogen, phosphorus and potassium in the plant tissues. However, the absolute amounts of these minerals per plant decreased as the plant population was increased.Planting with the cormel resulted in the highest total yield. However, the difference in total yield between planting with the apical and half-apical pieces was not statistically significant. A similar situation was found when planting with quarter-apical and corm pieces. Therefore, it is recommended that the apical piece is cut into two equal halves in order to use a given amount of apicals to reduce the corm pieces when planting.Increasing the plant population, by reducing the distance between plants from 45 to 30 cm, resulted in an increased yield per hectare. However, reducing the distance between plants to 15 cm resulted in a decrease in yield. 相似文献
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