Study on karyotype and occurrence of B chromosomes in two endemic species of the genus Pimelodus (Siluriformes, Pimelodidae) from the river Iguaçu.

abstract：:The karyotypes of the bat species Molossus ater, M. molossus (2n = 48; NF = 64) and Molossops planirostris (2n = 34; NF = 60) were analyzed by G-, C-banding, silver nitrate staining (AgNO3), base-specific fluorochromes and fluorescent in situ hybridization (FISH). The two species of Molossus presented the constitutive...

journal_title：Hereditas

authors： Leite-Silva C,Santos N,Fagundes V,Yonenaga-Yassuda Y,de Souza MJ

更新日期：2003-01-01 00:00:00

abstract：BACKGROUND:The methylenetetrahydrofolate reductase (MTHFR) rs1801131 A/C variant results in a decrease in MTHFR enzymatic activity, which may play an important role in folate metabolism and is also an important source of DNA methylation and DNA synthesis. Several case-control studies have been conducted to assess the a...

journal_title：Hereditas

authors： Xu S,Zuo L

更新日期：2020-04-27 00:00:00

abstract：:In a study of the variation of fertility in boars of the Duroc breed from Danish AI stations, chromosome investigation has been conducted on 11 boars with high and 11 with low fertility, respectively, out of a total of 98 boars having normal semen quality according to AI standards. All 22 boars had the normal chromoso...

journal_title：Hereditas

authors： Christensen K,Pedersen JO

更新日期：1990-01-01 00:00:00

abstract：:Hieracium is an established model system for studying the cytological and genetic basis of gametophytic apomixis. In common with most known apomicts, the formation of 'maternal seed' is not exclusive in Hieracium, as apomixis operates in conjunction with a low level of sexuality. When this occurs the form of apomixis ...

journal_title：Hereditas

authors： Bicknell RA,Lambie SC,Butler RC

更新日期：2003-01-01 00:00:00

abstract：:The amount and distribution of genetic variation was investigated in 48 sorghum landrace accessions, representing 13 regions of origin and three adaptation zones (lowland, intermediate and highland elevation) in Ethiopia and Eritrea. Assaying 11 enzymes systems, 23 putative loci were scored for a total of 27 alleles. ...

journal_title：Hereditas

authors： Ayana A,Bryngelsson T,Bekele E

更新日期：2001-01-01 00:00:00

abstract：:Seventeen Danish accessions of five taxa of Barbarea, i.e. B. stricta, B. verna, B. intermedia and B. vulgaris ssp. vulgaris and ssp. arcuata including the two morphologically and biochemically differentiated P(pubescent)- and G(glabrous)-types, and 4 P-xG-type hybrids were analysed cytologically using fluorescent in ...

journal_title：Hereditas

authors： Ørgaard M,Linde-Laursen I

更新日期：2007-09-01 00:00:00

abstract：:Variation of the size of silver-stained nucleolar organizer regions (NORs) of chromosomes 10 and 8 was studied in pigs of six breeds (Sus scrofa L.). The silver deposits were quantified by image analysis and the results were normalized for each Ag-NOR chromosome. In general, normalized values for chromosomes 10 were h...

journal_title：Hereditas

authors： Mellink CH,Bosma AA,De Haan NA

更新日期：1994-01-01 00:00:00

abstract：:Temperature sensitive experiments on the interaction of Abruptex mutations of the Notch locus and Enhancer of split indicate that the effect of temperature on the development of macrochaeta and wing venation is different. This suggest that Notch affects the development of macrochaeta and wing venation in different and...

journal_title：Hereditas

authors： Grushko T,Rantanen M,Portin P

更新日期：1998-01-01 00:00:00

abstract：BACKGROUND:Seven in absentia homolog 1 (SIAH1) is an E3 ubiquitin ligase containing a RING-finger domain and a key regulator of normal development. Skin and hair follicle development is a complex and special process of morphogenesis involving multiple signaling pathways. SIAH1 is enriched in the Wnt signaling pathway a...

journal_title：Hereditas

authors： Zhou T,Chen Y,Zhao B,Hu S,Li J,Liu M,Liang S,Bao Z,Wu X

更新日期：2020-04-06 00:00:00

abstract：:Physical locations of 45S and 5S rDNA were detected in maize by fluorescence in situ hybridization (FISH). The FISH results on metaphase chromosome spreads showed the 45S rDNA was located just at the nucleolus organizer region (NOR) on 6S (the short arm) of chromosome 6) as expected, and 5S rDNA at the distal region o...

journal_title：Hereditas

authors： Li L,Arumuganathan K

更新日期：2001-01-01 00:00:00

abstract：:We have characterized a new X-chromosomal inversion in Drosophila melanogaster, extending from just distal of white to just proximal of the bb locus. The inversion places the w-isoxanthopterinless (wis) allele close to heterochromatin and under the influence of position-effect variegation (PEV). The wis gene activity ...

journal_title：Hereditas

authors： Rasmuson-Lestander A,Larsson J,Rasmuson B

更新日期：1993-01-01 00:00:00

abstract：:Intergenomic translocations between wheat, Hordeum chilense and Hordeum vulgare have been obtained in tritordeum background. Advanced lines from the crosses between three disomic chromosome addition lines for chromosome 2Hv, 3Hv, and 4Hv of barley (Hordeum vulgare) in Triticum aestivum cv. Chinese Spring (CS) and hexa...

journal_title：Hereditas

authors： Prieto P,Ramírez MC,Ballesteros J,Cabrera A

更新日期：2001-01-01 00:00:00

abstract：:The RAPD technique was found to provide reliable genetic markers in barley. A linkage study of 23 RAPDs, 28 RFLPs, and 29 gene loci was conducted on 72 chromosome-doubled haploid progeny lines from a barley cross. The resulting linkage map covered 680 cM, about half of the barley genome. RAPD markers were distributed ...

journal_title：Hereditas

authors： Giese H,Holm-Jensen AG,Mathiassen H,Kjaer B,Rasmussen SK,Bay H,Jensen J

更新日期：1994-01-01 00:00:00

abstract：:This paper provides new data on chromosomes of Brazilian vampire bats Desmodus rotundus and Diphylla ecaudata. These species were analyzed by GTG, CBG- and CB-DAPI banding, AgNO3/CMA3 sequential staining, base-specific fluorochrome dyes and in situ hybridization with 18S rDNA probe. C-banding (CBG) revealed constituti...

journal_title：Hereditas

authors： Santos N,Fagundes V,Yonenaga-Yassuda Y,De Souza MJ

更新日期：2001-01-01 00:00:00

abstract：:The dogroses, Rosa section Caninae, are all polyploid and characterised by their unbalanced meiosis; the pollen parent contributes one genome, whereas the seed parent contributes 3-5 genomes depending upon ploidy level of the species. As a result, genetically determined traits are expected to be matroclinally inherite...

journal_title：Hereditas

authors： Werlemark G,Nybom H

更新日期：2001-01-01 00:00:00

abstract：:Lymphocytes from 21 male smokers, 10 untreated lung cancer patients, and 11 controls were cultured with and without exposure to mitomycin C. There were no differences between the chromosome aberration frequencies in the two groups: the spontaneous aberration frequency was 8.5% among patients and 8.4% among controls, w...

journal_title：Hereditas

authors： Johansson M,Orndal C

更新日期：1989-01-01 00:00:00

abstract：:Six varieties, Kundan (K), Galvez-87 (G), Trap (T), Chris (C), Mango (M) and PBW-348 (P) along with fast ruster, Agra Local (AL), were screened for seedling reaction and adult pant response to leaf rust. Seedlings of all six varieties were susceptible while adult plants showed lower susceptability response than Agra L...

journal_title：Hereditas

authors： Lal Ahamed M,Singh SS,Sharma JB,Ram RB

更新日期：2004-01-01 00:00:00

abstract：:Chromosome analysis was performed on samples from 20 Brazilian patients with breast cancer. All the samples were from untreated patients who presented the clinical symptoms for months or years before surgical intervention. Six cases showed axillary lymph node metastases. Clonal chromosome abnormalities were detected i...

journal_title：Hereditas

authors： Cavalli LR,Cavaliéri LM,Ribeiro LA,Cavalli IJ,Silveira R,Rogatto SR

更新日期：1997-01-01 00:00:00

abstract：Background:Elymus sibiricus is an important native grass in Qinghai-Tibetan Plateau. Seed shattering is a serious problem for E. sibiricus, especially at harvest time. Cross breeding is an effective way to create new varieties with beneficial characteristic or improved traits, and to broaden genetic base. Results:In t...

journal_title：Hereditas

authors： Zhao X,Zhang J,Zhang Z,Wang Y,Xie W

更新日期：2017-12-12 00:00:00

abstract：:Mature eggs of allotetraploid carp were activated by inactive sperm or crossed with normal sperms of common carp (Cyprinus carpio), crucian carp (Carassius auratus), Chinese blunt snout bream (Megalobrama amblycephala), Hemiculter leucisculus and Pseudorasbora parva. Chromosome counts showed that all offspring of thes...

journal_title：Hereditas

authors： Ye Y,Zhou J,Wang X,Wu Q

更新日期：2002-01-01 00:00:00

abstract：:A recombinant inbred line (RIL) population from a cross between 'HH1B' and 'RSB02' (a deep-water rice variety with resistance to sheath blight) was planted in two locations for four different growing seasons. Seven traits were used to evaluate the disease severity, namely disease rating (DR), lesion length (LL), lesio...

journal_title：Hereditas

authors： Liu Y,Chen L,Fu D,Lou Q,Mei H,Xiong L,Li M,Xu X,Mei X,Luo L

更新日期：2014-06-01 00:00:00

abstract：:Maize is the third important major food crop. Breeding for low phytate maize genotypes is an effective strategy for decreasing the content of kernel phytic acid (a chelator of cations such as Ca(2+) and Fe(3+) ) and thereby increasing the bioavailability of nutritive minerals in human diet and animal feed. Previous st...

journal_title：Hereditas

authors： Sureshkumar S,Tamilkumar P,Senthil N,Nagarajan P,Thangavelu AU,Raveendran M,Vellaikumar S,Ganesan KN,Balagopal R,Vijayalakshmi G,Shobana V

更新日期：2014-02-01 00:00:00

abstract：:It has been shown that the variants of alcohol dehydrogenase (ADH) genes exhibit great diversities among various populations and are associated with susceptibility to alcoholism. To investigate the distribution of SNPs at ADH genes in Chinese populations and the genetic relationship of these groups, we collected 467 i...

journal_title：Hereditas

authors： Ma L,Xue Y,Liu Y,Wang Z,Cui X,Li P,Fu S

更新日期：2005-02-01 00:00:00

abstract：:High molecular weight glutenin subunit (HMW-GS) 1Bx23, an x-type subset encoded by Glu-B1p, which is only distributed in Triticum turgidum, was successfully transferred from hexaploid triticale to common wheat line SY95-71. Sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) shows that subunit 1Bx23 ...

journal_title：Hereditas

authors： Yang ZJ,Li GR,Shu HL,Liu C,Feng J,Chang ZJ,Ren ZL

更新日期：2006-12-01 00:00:00

abstract：:In 1921 Hereditas published an article on the fall of Rome written by the famous classical scholar Martin P:son Nilsson. Why was a paper on this unexpected topic printed in the newly founded journal? To Nilsson, the demise of the Roman Empire was explained by the "bastardization" occurring between "races" from differe...

journal_title：Hereditas

authors： Bengtsson BO

更新日期：2014-12-01 00:00:00

abstract：:On the assumption that the survival of a parthenogenetic strain in nature relies on the strain's ability to compete with the bisexual population, we attempted to discern any diminution of competition between bisexual strains of Drosophila and parthenogenetic strains derived from them on the basis of light intensity pr...

journal_title：Hereditas

authors： Seiger MB,Kuzujanakis M

更新日期：1992-01-01 00:00:00

abstract：BACKGROUND:The Drosophila hindgut is commonly used model for studying various aspects of organogenesis like primordium establishment, further specification, patterning, and morphogenesis. During embryonic development of Drosophila, many transcriptional activators are involved in the formation of the hindgut. The transc...

journal_title：Hereditas

authors： Hildebrandt K,Bach N,Kolb D,Walldorf U

更新日期：2020-11-19 00:00:00

abstract：:Species of Brassica have small, morphologically similar chromosomes, which makes karyotyping difficult using conventional cytogenetic methods. Molecular cytogenetic methods, like fluorescence in situ hybridisation (FISH) have the potential to improve karyotyping through the use of chromosome- or genome-specific marker...

journal_title：Hereditas

authors： Kulak S,Hasterok R,Maluszynska J

更新日期：2002-01-01 00:00:00

abstract：:The discovery in the mid 1970s of efficient methods of DNA sequencing and their subsequent development into more and more rapid procedures followed by sequencing the genomes of many species, including man in 2001, revolutionised the whole of biology. Remarkably, new light could be cast on the evolutionary relations of...

journal_title：Hereditas

authors： Portin P

更新日期：2007-07-01 00:00:00

abstract：BACKGROUND:While orchardgrass (Dactylis glomerata L.) is a well-known perennial forage species, rust diseases cause serious reductions in the yield and quality of orchardgrass; however, genetic mechanisms of rust resistance are not well understood in orchardgrass. RESULTS:In this study, a genome-wide association study...

journal_title：Hereditas

authors： Zeng B,Yan H,Liu X,Zang W,Zhang A,Zhou S,Huang L,Liu J

更新日期：2017-02-23 00:00:00