共查询到20条相似文献,搜索用时 140 毫秒
1.
2.
中字系列小偃麦遗传材料的培育、遗传分析和利用@孙善澄$山西农业科学院作物遗传研究所!太原030031@白建荣$山西农业科学院作物遗传研究所!太原030031小偃麦;;遗传分析 相似文献
3.
过去50年中中国小麦品种在Glu-A1,Glu-B1和Glu-D1位点上等位基因的变化@张学勇$中国农业科学院品种资源研究所!北京100081,China@董玉琛$中国农业科学院品种资源研究所!北京100081,China小麦;;基因 相似文献
4.
5.
闭锁卵泡中肾素──血管紧张素系统的变化@吴尔若$国家计划生育委员会科学技术研究所! 中国北京100081
@裴开颜$国家计划生育委员会科学技术研究所! 中国北京100081
@焦丽红$中国科学院动物研究所计划生育生殖生物学国家重点实验室! 中国北京100080
@王红$中国科学院动物研究所计划生育生殖生物学国家重点实验室! 中国北京100080 相似文献
6.
大鼠睾丸减数分裂相关基因的研究@刘德瑜$国家计划生育委员会科学技术研究所! 中国 北京100081
@吴燕婉$国家计划生育委员会科学技术研究所! 中国 北京100081 相似文献
7.
利用异源双代换系杂交产生染色体易位系@贾旭$中国科学院遗传研究所植物细胞与染色体工程国家重点实验室!北京100101双代换系;;染色体;;易位系 相似文献
8.
非Robertsonian类型小黑麦易位系的研究 总被引:1,自引:0,他引:1
非Robertsonian类型小黑麦易位系的研究@胡含$中国科学院遗传研究所植物细胞与染色体工程国家重点实验室!北京100101小黑麦;;易位系 相似文献
9.
10.
用奶孕酮试验改善奶牛繁殖力@蔡正华$中国农业科学院畜牧研究所! 中国北京100094
@刘云海$中国农业科学院畜牧研究所! 中国北京100094
@尚江华$中国农业科学院畜牧研究所! 中国北京100094 相似文献
11.
12.
Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme
responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare
the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show
that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by
distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of
demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least
one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of
the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable
potent antiproliferative synthetic drugs. 相似文献
13.
正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases 相似文献
14.
15.
16.
The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle. 相似文献
17.
18.
Michael Hesse 《Plant Systematics and Evolution》1980,134(3-4):229-267
Some closely related members of the monocotyledonous familiesAlismataceae, Liliaceae, Juncaceae, Cyperaceae, Poaceae andAraceae with variable modes of pollination (insect- and wind-pollination) were studied in relation to the ultrastructure of pollenkitt and exine (amount, consistency and distribution of pollenkitt on the surface of pollen grains). The character syndromes of pollen cementing in entomophilous, anemophilous and intermediate (ambophilous or amphiphilous) monocotyledons are the same in principal as in dicotyledons. Comparing present with former results one can summarize: 1) The pollenkitt is always produced in the same manner by the anther tapetum in all angiosperm sub-classes. 2) The variable stickiness of entomophilous and anemophilous pollen always depends on the particular distribution and consistency of the pollenkitt, but not its amount on the pollen surface. 3) The mostly dry and powdery pollen of anemophilous plants always contains a variable amount of inactive pollenkitt in its exine cavities. 4) A step-by step change of the pollen cementing syndrome can be observed from entomophily towards anemophily. 5) From the omnipresence of pollenkitt in all wind-pollinated angiosperms studied one can conclude that the ancestors of anemophilous angiosperms probably have been zoophilous (i.e. entomophilous) throughout. 相似文献
19.
Surveillance of Class Ⅰ Newcastle Disease Virus at Live Bird Markets and Commercial Poultry Farms in Eastern China Reveals the Epidemic Characteristics 下载免费PDF全文
Xiaolong Lu Xiaoquan Wang Tiansong Zhan Yifan Sun Xin Wang Naiqing Xu Tianxing Liao Yu Chen Min Gu Shunlin Hu Xiaowen Liu Xiufan Liu 《中国病毒学》2021,36(4):818-822
20.
正Dear Editor,Parainfluenza virus 5 (PIV5), known as canine parainfluenza virus in the veterinary field, is a negative-sense,nonsegmented, single-stranded RNA virus belonging to the Paramyxoviridae family (Chen 2018). The virus was first reported in primary monkey kidney cells in 1954 (Hsiung1972), then it has been frequently discovered in various 相似文献