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| Registros recuperados: 107 | |
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| Al-Atiyat,Raed M.; Aljumaah,Riyadh S.; Abudabos,Alaeldein M.; Alotybi,Masoud N.; Harron,Raafat M.; Algawaan,Abdulaziz S.; Aljooan,Hassan S.. |
| ABSTRACT In this study, we investigated the differentiation of five different chicken ecotypes - Center, North, South, West, and East - of Saudi Arabia using discriminate analysis. The analysis was based on nine important morphological and phenotypic traits: body color, beak color, earlobe color, eye color, shank color, comb color, comb type, comb size, and feather distribution. There was a strong significant relationship between the phenotype and effect of geographic height in terms of comb type and earlobe color in males as well as body, beak, eye, and shank color. In particular, the comb type and earlobe color differentiated the ecotypes of males. Among the females, the beak, earlobe, eye, shank color, and feather distribution had more differentiating... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Genetic distance; Genetic variation; Indigenous; Morphology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001000791 |
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| ROTUNDO,JOSÉ L; CIPRIOTTI,PABLO A; GUNDEL,PEDRO E. |
| We studied morphological and growth responses to drought of two sub-populations of Bromus pictus from communities with soils with different water availability from the Patagonian steppe. After a process of acclimatization common to both sub-populations, individuals from both sub-populations were subjected to three levels of water availability during 44 days. Independently of the water availability treatment, the sub-population from the community of high soil water availability showed higher aboveground relative growth rate (RGR) and higher leaf size (area and weight) compared to the sub-population from the community of low soil water availability. These results prove the expected evolution of higher growth rates and leaf sizes in resource rich... |
| Tipo: Journal article |
Palavras-chave: Arid lands; Drought; Ecotypes; Genetic variation; Soil depth. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000100006 |
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| Maia,Clara Yohana; Soares,Nazaré Suziane; Castro,Ana Cecília Ribeiro; Queirós,João Ravelly Alves de; Aragão,Fernando Antonio Souza de; Bordallo,Patricia do Nascimento. |
| ABSTRACT Anthurium affine is an ornamental Brazilian native plant very appreciated due to its long-lasting durability. To explore the genetic diversity available, 21 A. affine half-sibling progeny were evaluated using morphoagronomic and molecular descriptors. The morphoagronomic descriptors used were: plant height, plant diameter, growth habit, leaf number, leaf blade length, leaf blade width, petiole length, petiole diameter, leaf margin undulation, general appearance; soil cover rate and Random Amplified Polymorphic DNA (RAPD) markers the molecular one. All the descriptors within the progeny showed variability and general appearance, leaf margin undulation and soil cover rate are the ones that most contribute to the plants divergence. From 45 RAPD... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clustering; Characterization; Genetic variation; Ornamental; RAPD. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400410 |
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| Veasey,Elisabeth Ann; Negrão,Marta Organo; Martins,Paulo Sodero; Bandel,Gerhard. |
| The objective of this study was to characterize 17 accessions of Sesbania, representing S. exasperata, S. grandiflora, S. sesban, S. tetraptera and S. virgata at the seedling stage, and to evaluate the initial development during the first two months after planting. The trial was conducted in a greenhouse in a randomized block design, with 4 replications and 5 plants per plot. The traits recorded were: plant height (PH), from four observations at 15-day intervals, at 17, 32, 47 and 62 days after planting; length of hypocotyl (LH) and epicotyl (LEP); length (LE1) and width (WE1) of the first eophyll; and number of leaflet pairs of the second metaphyll (NLP), evaluated 17 days after planting. Univariate analyses of variance were performed, estimating the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sesbania; Seedling morphology; Genetic variation; Early growth. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161999000200011 |
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| Tatsaporn Siripug; Suporn Katawatin. |
| HSP70-2 is well accepted as an indicator of heat stress. The purpose of this study was to investigate the physiological responses to heat stress of differential genotypes of HSP70-2 in dairy cattle. Thirty two female Holstein Friesian (HF) crossbred heifers, 2-3 years of age, 266 ± 5.6 kg body weight were placed outdoor with partial roof. Blood samples were collected to do genotyping of HSP70-2 using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. Ambient temperature, relative humidity and physiological responses, including rectal temperature, respiration rate, sweating rate, pulse rate, skin temperature, and N/L ratio were examined at 06.00, 14.00, 18.00 and 22.00. Genotyping revealed that there were 14 and 18... |
| Tipo: PhysicalObject |
Palavras-chave: Dairy cattle; Genotypes; Genetic variation; Hsp70-2; Heat stress; Heat tolerant; Genetic improvement; โคนม; รูปแบบจีโนไทป์; พันธุกรรม; การแสดงออกของยีน; ความแตกต่างทางพันธุกรรม; การตอบสนองทางสรีรวิทยา; ความเครียด; อากาศร้อน; การทนร้อน; การรักษาสมดุลความร้อน; การปรับปรุงพันธุ์. |
| Ano: 2014 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5750 |
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| Macías,Mauro Sierra; Rodríguez Montalvo,Flavio A.; Espinosa Calderón B,Alejandro; Tadeo Robledo,Margarita; Gómez Montiel,Noel Orlando; Vázquez Carrillo,María Griselda; Ugalde Acosta,Francisco Javier; Freyre,Sabel Barrón; Arellano,José Luis Del Rosario; Leyva Ovalle,Otto Raúl; Serna Lagunes,Ricardo; Meza,Pablo Andrés. |
| Abstract The objective of the work was to evalúate the agronomic performance and seed yield of tropical corn (Zea mays L.) of single and tri-linear crosses. In the spring-summer of 2015 and 2016, two essays were established in the states of Veracruz and Tabasco, Mexico. In the first essay, a group of 12 single crosses was evaluated, and in the second, a group of 18 tri-linear crosses was evaluated. In both essays, the treatments were distributed under a completely randomized block design with three replicates in 5 m long, two-row plots and 0.8 m between rows, with an initial population density of 62.500 plants ha-1. Within the simple cross trial, hybrids HE-3W, COMERCIAL 1, LT-164xLT-165, and HE-1W presented seed yields above the general mean (3384 kg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomic performance; Genetic variation; Heterosis; Hybridization; Productivity. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122021000200180 |
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| Alizadeh,Mohammad Ali; Zehtabchi,Fatemeh; Jafari,Ali Ashraf. |
| Abstract In order to investigate diversity and explain the relationships of essential oil yield with morphological traits, 84 populations T. polycephalum, were sown in the field using randomized complete blocks design (RCBD) with three replicates in Research Institute of Forest and Rangeland, Tehran, Iran in 2013-2014. Data were collected for flowering date, growth degree days (GDD), stem number, plant height, dry matter (DM) yield, essential oil percentage, and essential oil yield. The relationships among traits were determined using correlation, regression and factor analysis. The genetic distance and genotype classification were determined using cluster analysis. DM yield was positively correlated with plant height, canopy cover, stem number and oil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Early flowering date; Genetic variation; Phenotypic correlations; Morphological traits; Plant genetic resources. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100177 |
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| Rivera-Jiménez, Hernando; Rossini, Bruno César; Tambarussi, Evandro Vagner; Ann Veasey, Elizabeth; Ibanes, Bruna; Marino, Celso Luis. |
| Growers appreciate Cattleya walkeriana and C. loddigesii due to striking shape and rarity. Thus, this study aimed to evaluate the feasibility of DNA barcode regions, namely ITS1, ITS2 and rpoC1, to discriminate between C. walkeriana and C. loddigesii species. DNA barcode regions were successfully amplified using primers designed to amplify plants. We also included sequences from public databases in order to test if these regions were able to discriminate C. walkeriana and C. loddigesii from other Cattleya species. These regions, and their combinations, demonstrated that the ITS1+ITS2 had the highest average interspecific distance (11.1%), followed by rpoC1 (1.06%). For species discrimination, ITS1+ITS2 provided the best results. The combined data set of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.00.00.00-6 orchid improvement; Genetic variation; Species separation. 2.02.03.00-4. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/33024 |
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| Khatoon,Lubna; Khan,Inam Ullah; Shah,Shahid Ali; Jan,Muhammad Ishtiaq; Ullah,Farhat; Malik,Salman Akbar. |
| Malaria is one of the serious diseases threatening human health in Pakistan and contributes to a large proportion of the total malaria deaths in South Asia. However, little is known about the nature and extent of genetic diversity of the malarial parasites circulating in Pakistan. This study was designed to assess the infection status of Plasmodium and the genetic diversity of Plasmodium vivax and Plasmodium falciparum by analyzing msp-3α, msp-3β and msp-1, msp-2 genes respectively using allele specific nested PCR and RFLP assays. For this purpose, 130 field isolates were collected from the individuals who exhibited clinical symptoms associated with malaria in the Kohat region of Khyber Pakhtoonkhwa (KPK), Pakistan. Among 130 blood samples collected, P.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Plasmodium vivax; Plasmodium falciparum; Genetic variation; Pakistan. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000200014 |
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| Carneiro,Valdirene Leão; Bendicho,Maria Teresita; Santos,Rosalina Guedes; Casela,Marilda; Netto,Eduardo M.; Mota,Scarlet Torres Moraes; Pina,Iza Cristina Araújo; Nascimento,Roberto Meyer; Freire,Songeli Menezes; Barbosa,Theolis. |
| ABSTRACT Introduction Latent tuberculosis infection diagnosis based on the release of interferon-gamma in cultures of peripheral blood cells stimulated with Mycobacterium tuberculosis antigens has replaced the tuberculin skin test in many countries with low tuberculosis prevalence. The IFN-γ production can be influenced by genetic polymorphisms, of which the IFNG + 874 (rs62559044) locus is the most studied. We investigated the possible influence of the IFNG + 874 A/T polymorphism on interferon-gamma test performance. Methods Patients diagnosed with pulmonary tuberculosis (75), volunteers with positive tuberculin skin test (70) and healthy volunteers with negative tuberculin skin test and no history of contact with tuberculosis (57) were evaluated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tuberculosis infection; Genetic variation; Sensitivity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000300202 |
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| Registros recuperados: 107 | |
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