Boletin De La Sociedad Argentina De Botanica最新文献_第9页

Estudios citogenéticos en híbridos triploides y tetraploides de Turnera krapovickasii, T. scabra y T. subulata (Passifloraceae, Turneroideae).

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18858

Aveliano Fernández, S. A. Fernández, Ivana Evelìn Kovalsky, V. S. Neffa

{"title":"Estudios citogenéticos en híbridos triploides y tetraploides de Turnera krapovickasii, T. scabra y T. subulata (Passifloraceae, Turneroideae).","authors":"Aveliano Fernández, S. A. Fernández, Ivana Evelìn Kovalsky, V. S. Neffa","doi":"10.31055/1851.2372.V52.N4.18858","DOIUrl":"https://doi.org/10.31055/1851.2372.V52.N4.18858","url":null,"abstract":"Cytogenetic studies in triploid and tetraploid hybrids of Turnera krapovickasii, T. scabra and T. subulata (Passifloraceae, Turneroideae). In order to investigate the genomic relationships among species of series Turnera (x= 5), a controlled crossing program was performed and yielded numerous hybrids. Among the yellow flowered species of series Turnera, T. krapovickasii, T. scabra and T. subulata have diploid and autotetraploid cytotypes. So far, the degree of reproductive isolation between diploids and autotetraploids, and the degree of genomic affinity at tetraploid level are unknown. In this study, we present the results of the cytogenetic analysis of triploid (2n=3x=15) intraspecific hybrids of T. krapovickasii and T. scabra and tetraploid (2n=4x=20) (2n=4x=20) T. krapovickasii × T. scabra and T. subulata × T. scabra hybrids. In the triploid hybrids we found cells with 1 to 5 trivalents and the pollen viability was 11.4% - 15.2%. In the tetraploid hybrids we found cells with 1 to 5 quadrivalents and the pollen viability was 76% - 87.97%. The results of this work revealed that the reproductive isolation between diploids and tetraploids is incomplete, and that the triploid hybrids are not completely steriles. Likewise, the cytogenetic analysis of the interspecific hybrids evidenced that the genomes of T. krapovickasii, T. scabra and T. subulata display more affinity at tetraploid level than at diploid level.","PeriodicalId":49101,"journal":{"name":"Boletin De La Sociedad Argentina De Botanica","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90921641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Fusión, esculturas y ornamentaciones de las piezas de la corola de 17 especies de Papilionoideae 17种凤蝶科花冠碎片的融合、雕塑和装饰

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18842

M. M. Aleman, P. S. Hoc, D. L. Spahr, C. Yáñez, Carlos Anselmo Gomez

{"title":"Fusión, esculturas y ornamentaciones de las piezas de la corola de 17 especies de Papilionoideae","authors":"M. M. Aleman, P. S. Hoc, D. L. Spahr, C. Yáñez, Carlos Anselmo Gomez","doi":"10.31055/1851.2372.V52.N4.18842","DOIUrl":"https://doi.org/10.31055/1851.2372.V52.N4.18842","url":null,"abstract":": Fusion, sculptures and ornamentation of the corolla pieces of 17 species of Papilionoideae. The species of subfamily Papilionoideae present flowers with a complex architecture, with elaborated petals in which it has been documented the presence of auricles and callosities, appendixes or spurs that joint the pieces of the corolla and also microsculpturings on the wings. In this study, we analyze the morphology of the petals of 17 species of Papilionoideae (Leguminosae) native of Salta province, Argentina. The lower margins of the keel were fused in all of the species, through different types of fusion of epidermal cells. Only a few species presented fusion in the upper margin of the keel. All the species showed sculpturings in the petals, which would joint some of the pieces of the corolla. They also exhibit ornaments or microsculpturings in the basal region of the adaxial surface of the wings that may act as a grip for pollinators when they land on the flower. The petals of the Papilionoideae flowers presented characteristics that could restrict the type of pollinator able to activate the different mechanisms of pollination that allow them to access the rewards enclosed by the keel.","PeriodicalId":49101,"journal":{"name":"Boletin De La Sociedad Argentina De Botanica","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86885690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Taxonomic novelties in South American species of Gutierrezia (Asteraceae, Astereae) 南美古铁石属植物的分类新颖性(菊科，菊科)

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18871

F. Ratto, A. Bartoli

引用次数: 0

Gametophyte development and conservation of Ctenitis submarginalis (Dryopteridaceae) in Buenos Aires Province, Argentina 阿根廷布宜诺斯艾利斯省毛蕨科毛毡蕨配子体发育与保护

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18857

J. R. Giacosa, D. A. Gorrer, G. Giudice, M. L. Luna

引用次数: 7

Contenido de nutrientes de especies leñosas en la estepa patagónica, Argentina. 阿根廷巴塔哥尼亚草原木本物种的营养含量。

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.v52.n4.18844

M. Barría, Martina Crettón, Celeste Gurín, M. Arce, Enrique Rost, M. Mazzuca

{"title":"Contenido de nutrientes de especies leñosas en la estepa patagónica, Argentina.","authors":"M. Barría, Martina Crettón, Celeste Gurín, M. Arce, Enrique Rost, M. Mazzuca","doi":"10.31055/1851.2372.v52.n4.18844","DOIUrl":"https://doi.org/10.31055/1851.2372.v52.n4.18844","url":null,"abstract":"Woody plants constitute a vital food reserve for the herbivores inhabiting the Patagonian steppe. In a preliminary study, some of these plants showed a high content of ether extract (FAT). To determine whether the low availability of nitrogen in soils leads to low forage quality and whether a high FAT content correlates with a high amount of nutritive lipids, namely fatty acids (FA), chemical parameters of forage quality of aerial parts of thirteen woody plants from this steppe were analyzed. Plants showed moderate or low crude protein (CP) content, and, independently of the FAT content, all samples had approximately the same total content of FA (TFA), with an average of 1% of dry matter. The highest CP content was found in aerial parts of Atriplex lampa (13%), Atriplex sagittifolia (10%), Adesmia salamancensis (10%) and seeds of Retanilla patagonica (22%). This parameter and the values of digestibility (DMD) defined these four species as those with best forage quality. Except for A. lampa and Berberis microphylla, which have been previously studied in other regions of Argentina, this is the first report on the nutritional quality of woody species from the Patagonian steppe.","PeriodicalId":49101,"journal":{"name":"Boletin De La Sociedad Argentina De Botanica","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74169020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Cambios florísticos inducidos por la frecuencia de fuego en el Chaco Serrano. 查科塞拉诺火灾频率引起的植物区系变化。

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18861

L. Carbone, Natalia Aguirre-Acosta, Julia Tavella, Ramiro Aguilar

{"title":"Cambios florísticos inducidos por la frecuencia de fuego en el Chaco Serrano.","authors":"L. Carbone, Natalia Aguirre-Acosta, Julia Tavella, Ramiro Aguilar","doi":"10.31055/1851.2372.V52.N4.18861","DOIUrl":"https://doi.org/10.31055/1851.2372.V52.N4.18861","url":null,"abstract":"Floristic changes induced by fire frequency in Chaco Serrano. The Sierras Chicas from Cordoba is the mountain range with the highest fire frequency in central Argentina. However, the response to fire frequency of Chaco Serrano plant communities has not yet been assessed. Based on 23-year fire history, we surveyed all vascular plants in unburned, low and high fire frequency sites in the Chaco Serrano district located on Sierras Chicas from Cordoba. We found that fire frequency induces changes in vegetation structure, plant richness, and composition. Specifically, we observed a decrease in total plant richness at sites with a higher number of fire events. All life forms showed decreases in richness to the effects of fire, except the graminoids that showed no changes. In addition, we recorded a change in the species composition between the burned sites (both frequencies) and unburned sites, evidenced through the emergence of indicator species that define both conditions. These results indicate that fire is a strong ecological process that shapes plant communities, selecting species with life history traits (i.e., resprouting and lifespan) that confer adaptative value to new environmental conditions imposed by the regime of high fire frequency.","PeriodicalId":49101,"journal":{"name":"Boletin De La Sociedad Argentina De Botanica","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86578383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Dormición física en Lepechinia floribunda (Lamiaceae): Un arbusto nativo de interés medicinal 唇形科(Lepechinia floribunda)的物理休眠:一种具有药用价值的本地灌木

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18855

Lorena Ashworth, Julia L. Camina, Guillermo Funes

引用次数: 3

Número de cromosomas, anomalías meióticas y formación de polen 2n en accesiones de la especie silvestre Chrysolaena flexuosa (Vernonieae, Compositae) de su rango de distribución en Argentina. 阿根廷野生黄蝶(Vernonieae，菊科)的染色体数、减数分裂异常和花粉形成2n。

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18860

María Lis Echeverría, E. L. Camadro

{"title":"Número de cromosomas, anomalías meióticas y formación de polen 2n en accesiones de la especie silvestre Chrysolaena flexuosa (Vernonieae, Compositae) de su rango de distribución en Argentina.","authors":"María Lis Echeverría, E. L. Camadro","doi":"10.31055/1851.2372.V52.N4.18860","DOIUrl":"https://doi.org/10.31055/1851.2372.V52.N4.18860","url":null,"abstract":"Chrysolaena flexuosa is a South American species of potential ornamental value (basic chromosome number of x=10). Diploid (n=10) and tetraploid (n=20) cytotypes have been reported for its distribution area, although one hexaploid (n=30-32ca.) cytotype has been reported for its most southern distribution. To investigate if ploidy and latitude are positively related in Ch. flexuosa natural populations and if sexual polyploidization could have had a role in the origin of the polyploid cytotypes, we determined chromosome numbers, DNA content, and pollen viability and size, and analyzed microsporogenesis in samples of seven Argentinian accessions. Two of the northeastern accessions were diploid and one was tetraploid, whereas the four southeastern accessions were hexaploid. Ploidy levels determined both by chromosome countings and flow cytometry coincided, although monoploid genome size significantly decreased with increasing ploidy. In all accessions, variability was observed for pollen viability and size, as well as for large (presumably 2n) pollen production. This variability was underlined by abnormal cytological events in meiosis and at the tetrad stage (lagging chromosomes, parallel spindles, triads). The results would indicate that there is, apparently, a positive relation between ploidy and latitude, and suggest a likely role of sexual polyploidization in the origin, establishment and expansion of Ch. flexuosa populations.","PeriodicalId":49101,"journal":{"name":"Boletin De La Sociedad Argentina De Botanica","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84926923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Los géneros de Heliotropiaceae en Argentina 阿根廷的Heliotropiaceae属

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18872

F. Luebert

引用次数: 1

Confluencia de experiencias etnomédicas y uso de plantas medicinales en practicantes nativos del Valle de Traslasierra (Departamento San Javier), Córdoba, Argentina. 阿根廷科尔多瓦特拉斯拉西尔拉山谷(圣哈维尔省)土著从业人员的民族医学经验和药用植物使用的融合。

IF 0.6 4区生物学

Boletin De La Sociedad Argentina De Botanica Pub Date : 2017-12-15 DOI: 10.31055/1851.2372.V52.N4.18873

M. C. Luján, G. Barboza, G. J. Martínez

{"title":"Confluencia de experiencias etnomédicas y uso de plantas medicinales en practicantes nativos del Valle de Traslasierra (Departamento San Javier), Córdoba, Argentina.","authors":"M. C. Luján, G. Barboza, G. J. Martínez","doi":"10.31055/1851.2372.V52.N4.18873","DOIUrl":"https://doi.org/10.31055/1851.2372.V52.N4.18873","url":null,"abstract":": Confluence of ethnomedical experiences and use of medicinal plants of practitioners native to Translasierra Valley (San Javier Department), Cordoba, Argentina. The valley named as Valle de Traslasierra extends over the western mountainside of the Sierras de Los Comechingones hills. Its characteristic distance from large cities changed qualitatively due to major migration flows. This study aims at characterizing the ethnomedicine and natural pharmacopoeia in the region. We followed qualitative and quantitative methods representative of the ethnobotanical approach. We evidenced a vast and varied therapeutics exerted by native practitioners with a total of 676 medicinal uses corresponding to 231 taxa and 84 botanical families. An analysis of frequency of uses and taxa was also carried out through descriptive statistics. The families with higher number of cited taxa and medicinal use are Asteraceae, Lamiaceae, Fabaceae, Rosaceae and Verbenaceae. The most commonly found applications were those related to gastrointestinal disorders, followed by those related to pneumology and cardiology. From the taxa with the largest number of applications, 60% comprise introduced species and 40% consist of wild native species. Finally, the narratives show that native practitioners, while keeping alive practices based on popular medical knowledge, they have incorporated various therapeutic practices and representations, especially from alternative medicine, thus forming a vast natural pharmacopoeia with multiple meanings, typical of multicultural contexts.","PeriodicalId":49101,"journal":{"name":"Boletin De La Sociedad Argentina De Botanica","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76101169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2