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| 1 | 马铃薯2n配子发生的遗传分析显示文摘马铃薯2n配子的研究为二倍体野生种的利用开辟了一条新途径。本文首次对两个群体共8个不同亲本的2n花粉发生频率的选择标准、相关性、配合力、遗传力及有关问题进行了探讨。结果表明,2n花粉发生的广义遗传力为51.66%~45.35%,狭义遗传力为20.08%~14.89%。这说明遗传加性效应很低。特殊配合力对2n花粉发生起主导作用。2n花粉频率很大程度上取决于组合中大于5%2n花粉基因型的频率而不是组合的最高频率。2n花粉的轮回选择应从组合平均数高的群体中开始进行。 | 屈冬玉 朱德蔚 王登社 高占旺 Ramanna,M.S. Jacobsen,E. | 1995 | 园艺学报1995，22，1： | 8 |
| 2 | Analysis of the meiosis in the F_1 hybrids of Longiflorum × Asiatic(LA) of lilies(Lilium) using genomic in situ hybridization显示文摘Longiflorum and Asiatic lilies of the genus Lilium of the family Liliaceae are two important groups of modern lily cultivars.One of the main trends of lily breeding is to realize introgression between these groups.With cut style pollination and embryo rescue,distant hybrids between the two groups have been obtained.However,the F1 hybrids are highly sterile or some of them could produce a small number of 2n gametes,and their BC1 progenies are usually triploids.Dutch lily breeders have selected many cultivars from these BC1 progenies based on their variation.It is presumably suggested that such variation could be caused by intergenomic recombination and abnormal meiosis during gamete formation in F1 hybrids of Longiflorum × Asiatic(LA) hybrids in Lilium.Therefore,the meiotic process of ten F1 LA hybrids was cytologically investigated using genomic in situ hybridization and traditional cytological methods in the present research.The results showed that:at metaphase I,the homoeologous chromosome pairing among different F1 hybrids ranged from 2.0 to 11.4 bivalents formed by homoeologous chromosomes per pollen mother cell(PMC),and very few multivalents,and even very few bivalents were formed by two chromosomes within one genome rather than homoeologous chromosomes in some PMCs;at anaphase I,all bivalents were disjoined and most univalents were divided.Both the disjoined bivalents(half-bivalents) and the divided univalents(sister chromatids) moved to the opposite poles,and then formed two groups of chromosomes;because the two resulting half-bivalents retained their axes in the cell undisturbed,many crossover types,including single crossovers,three strand double crossovers,four strand double crossovers,four strand triple crossovers,and four strand multiple crossovers between the non-sister chromatids in the tetrads of bivalents,were clearly inferred by analyzing the breakpoints on the disjoined bivalents.The present investigation not only explained the reason for sterility of the F1 LA hybrids and the variation of their BC1 progenies,but also provided a new method to analyze crossover types in other F1 interspecific hybrids as well. | Shujun Zhou Munikote S. Ramanna Richard G.E Visser Jaap M. van Tuyl | 2008 | Journal of Genetics and Genomics2008，35，11： | 8 |
| 3 | Pharmacognostic studies of insect gall of Quercus infectoria Olivier(Fagaceae)显示文摘Objective:To study the detailed pharmacognostic profile of galls of Quercus infectoria Olivier(Q.infectoria olivier)(Fagaceae),an important medicinal plant used in the Indian system of medicine.Methods:Samples of galls of Q.infectoria were studied by macroscopical,microscopical,physiochemical,phytochemical.fluorescence analysis and othjer methods for standardization as recommended by WHO.Results:Macroscopically,the crude drug is globose with horny appearances on external surface(1.4-2.3 cm in length and 1-1.5 cm in diameter),with greyish-brown to brownish-black in colour externally and dark brown buff colored.Surface is smooth with numerous horny protuberances giving rough touch,and witfi unpleasant odour.Microscopically,a wide zone of radially elongated parenchyma cells between upper and lower epidermis were found.The vascular strands were present at all places and radially elongated sclerides touched the lower epidermis.In physico-chemical studies,the moisture,total ash,acid insoluble ash,alcohol soluble,water soluble,petroleum ether,chloroform extractive value and tannin content were found to be 2.790,5.020,0.110,38.780,41.210,0.402,1.590 and 49.200 percentage respectively.Prcliminary phytochemical screening showed the presence of phenols,flavonoids,steroids,triterpenes,tannins,saponins and alkaloids.Cooclusions:The results of the present study serve as a valuable source of information and provide suitable standards for identification of this medicinally important plant drug material for future investigations and applications. | Savitri Shrestha Vasuki Srinivas Kaushik Ravi Shankara Birur Eshwarappa Sundara Rajan Subaramaihha Latha Muuaiah Ramanna Dhananjaya Bhadrapura Lakkappa | 2014 | Asian Pacific Journal of Tropical Biomedicine2014，4，1： | 4 |
| 4 | Association of endothelial nitric oxide synthase gene T-786C promoter polymorphism with gastric cancer显示文摘AIM: To investigate the role of endothelial nitric oxide synthase-786 T > C promoter polymorphism in the etiology of gastric cancer(GC). METHODS: A total of 150 GC patients and 150 control subjects were included in the study. The information on demographic features was elicited with an informed consent from all the patients and control subjects using a structured questionnaire. Helicobacter pylori(H. pylori) infectivity status was tested in antral biopsies from all the subjects by rapid urease test following the method of Vaira et al. Genomic DNA was isolated from whole blood samples following the salting out method of Lahiri et al. Genotype analysis of the rs2070744 polymorphism was carried out by allele-specific polymerase chain reaction method. The genotypes were determined based on the appearance of bands on an agarose gel stained with ethidium bromide under ultraviolet gel documentation with the help of 100 bp ladder. Odds ratios and corresponding 95%CIs were determined using java stat online software. RESULTS: There was a significant difference in the distribution of C allele(C vs T; P = 0.000, OR = 5.038) in patient group compared to the control subjects exhibiting a fivefold increased risk for GC. When the T/T and C/C genotypes were compared, there was an enhanced GC risk for individuals with C/C genotype(T/T vs C/C; P = 0.000). Among the demographic factors, smoking and alcoholism were the common risk factors in patients compared to the control subjects(P < 0.05). Patients with smoking and alcoholism developed cancer even in heterozygous T/C condition(smoking: P = 0.020 and alcoholism: P = 0.005). Individuals with H. pylori infection showed seven fold increased risk for cancer. All the patients with C/C genotype revealed a significant association between H. pylori infection and GC. Among the patients 2.4% of them revealed familial incidence of GC. No significant difference was noticed between cases and controls with regard to consanguinity(P = 0.473).CONCLUSION: The Present data suggest that eN OS-786 C/C genotype and C allele may be considered as potential risk factors in patients with GC. | Devulapalli Krishnaveni Bhayal Amar Chand Porika Shravan Kumar Malladi Uma Devi Macherla Ramanna Akka Jyothy Nallari Pratibha N Balakrishna Ananthapur Venkateshwari | 2015 | World Journal of Gastrointestinal Oncology2015，7，7： | 2 |
| 5 | Intergenomic recombination in F1 lily hybrids(Lilium) and its significance for ge- netic variation in the progenies as revealed by GISH and FISH 显示文摘 | Barba - Gonzalez R Ramanna M S Visser R G | 2005 | Genome2005，48，5： | 1 |
| 6 | Response of stem explants to screening and explant source as a basis for methodical advancing of regeneration proyocols for Chrysanthemum 显示文摘 | Annadana S Rademaker W Ramanna M | 2000 | Plant Cell Tissue and Organ Culture2000，62，： | 1 |
| 7 | Identification of the substrate of atrial vulnerability in patients with idiopathic atrial fibrillation显示文摘 | Ramanna H J Hauer RN Wittkampf FH | 2000 | Circulation2000，101，9： | 1 |
| 8 | Establishment of a complete series of a monosomic tomato chromosome addition lines in the cultivated potato using RFLP and GISH analyses显示文摘 | Haider Ali S N Ramanna M S Jacobsen E | 2001 | Theoretical and Applied Genetics2001，103，68： | 1 |
| 9 | Evaluation of BC2 progenies derived from 3x-2x and 3x-4x crosses of Lilium hybrids: a GISH analysis 显示文摘 | Lira K B Ramanna M S Jacobsen E | 2003 | Theor Appl Genet2003，106，： | 1 |
| 10 | Implications for GAAP from an analysis of positive research in accounting显示文摘 | S.P. Kothari Karthik Ramanna Douglas J. Skinner | 2010 | Journal of Accounting and Economics2010，，2： | 1 |
| 11 | Indeterminate meiotic restitution (IMR):a novel type of meiotic nuclear restitution mechanism detected in interspecific lily hybrids by GISH显示文摘 | LIM K B RAMANNA M S DE JONG J H | 2001 | Theor App Genet2001，103，： | 1 |
| 12 | Establishment of a complete series of a monosomic tomato chromosome addition lines in the cultivated potato using RFLP and GISH analyses显示文摘 | S. N. Haider Ali M. S. Ramanna E. Jacobsen R.G.F. Visser | 2001 | TAG Theoretical and Applied Genetics2001，，5： | 1 |
| 13 | Monitoring the expression profiles of doxorubicin-induced and doxorubicin-resistant cancer cells by cDNA microarray 显示文摘 | Kudoh K Ramanna M Ravatn R | 2000 | Cancer Res2000，60，15： | 1 |
| 14 | A re-examination of the mechanisms of 2n gametes foemation in potato and its implications for breeding显示文摘 | RAMANNA M S | 1979 | Euphytica1979，28，： | 1 |
| 15 | Elections and Discretionary Accruals : Evidence from 2004 显示文摘 | Ramanna K S Roychowdhury | 2010 | Journal of Accounting Research2010，48，2： | 1 |
| 16 | Nitrous oxide (N2O) induces 2n gametes in sterile F1 hybrids between Oriental×Asiatic lily (Lilium) hybrids and leads to intergenomic recombination显示文摘 | RODRIGO BARBA-GONZALEZ MILLER CHAD T RAMANNA MUNIKOTE S | 2006 | Euphytica2006，148，： | 1 |
| 17 | Infarct salvage with liposomeal prostaglandin E1 administered by intravenous bolus immediately before reperfusion in a canine infarction reperfusion model显示文摘 | Smalling RW Feld S Ramanna N | 1995 | Circulation1995，92，4： | 1 |
| 18 | Monitoring the expression profiles of doxorubicin-induced and doxorubicinresistant cancer cells by cDNA microarray显示文摘 | KUDOH K RAMANNA M RAVATN R | 2000 | Cancer Res2000，60，15： | 1 |
| 19 | Intellectual Property Rights, Agriculture, and Rural Communities 显示文摘 | Ramanna A | 2005 | Journal of Agricultural Safety and Health2005，11，2： | 1 |
| 20 | Increased dispersion and shortened refractoriness caused by verapamil in chronic atrial fibrillation显示文摘 | Ramanna H Elvan A Wittkampf F H | 2001 | J Am Coll Cardiol2001，37，5： | 1 |
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