Haseltonia最新文献_第2页

Two New Species of Ceropegia (Apocynaceae) from Tropical Africa 标题热带非洲麻瓜属(夹竹桃科)二新种

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0109

P. Bruyns, C. Klak, P. Hanáček

引用次数: 0

Cytogenetic Characteristics of Four Gymnocalycium (Cactaceae) Species along Altitudinal Gradients 四种仙人掌属植物在海拔梯度上的细胞遗传学特征

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0111

K. Bauk, D. Gurvich, M. L. Las Peñas

{"title":"Cytogenetic Characteristics of Four Gymnocalycium (Cactaceae) Species along Altitudinal Gradients","authors":"K. Bauk, D. Gurvich, M. L. Las Peñas","doi":"10.2985/026.029.0111","DOIUrl":"https://doi.org/10.2985/026.029.0111","url":null,"abstract":"Abstract: Species can have broad altitudinal distributions and their characteristics may vary throughout distribution ranges. Ploidy level can vary along environmental gradients, such as altitudinal ones. However, the relationships between ploidy level and altitude may be diverse. The karyotype allows us to know the structural and quantitative characteristics of the chromosomal pairs and to relate these characteristics to the environment where the species occur. Species of the Cactaceae family can be found from sea level to 4500 m above sea level (asl). The greatest species richness is found in mountain areas, where species occupy wide altitudinal ranges. Gymnocalycium belongs to the subfamily Cactoideae; it is a genus endemic to southern South America and its main center of diversity is found in the mountain ranges of central and northern Argentina. The basic chromosome number for Cactaceae is x = 11, with polyploidy being the main existing variation. The aim of this work was to analyze cytogenetic variables in populations of four species of the genus Gymnocalycium (G. andreae, G. erinaceum, G. monvillei, and G. mostii) along their altitudinal distribution. Idiograms were constructed using HCl/Giemsa, CMA/DAPI fluorescent chromosomal banding and fluorescent in situ hybridization (FISH). The karyotypes of the analyzed populations of each species were symmetric and showed little variation in size and symmetry. All the populations of G. andreae, G. erinaceum and G. mostii were found to be diploid and had the greatest distribution; G. monvillei was found to be tetraploid in all the populations analyzed. CMA+/DAPIbands associated with secondary constrictions (NORs) were detected in all the populations of all the species. The cytogenetic characteristics of the studied species were constant along the altitudinal gradients, showing that they can occur at different altitudes without major cytogenetic modifications.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"29 1","pages":"83 - 95"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78077074","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

×Cylindronia, a New Nothogenus Representing the First Reported Hybrid Between Grusonia and Cylindropuntia (Cactaceae) 新植物属×Cylindronia，代表了首次报道的桂花属与圆柱属(仙人掌科)的杂交

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0102

M. Baker, L. Majure, Michelle A. Cloud-Hughes, J. Rebman

引用次数: 0

Fruit Production and Seed Dispersal of Opuntia phaeacantha (Cactaceae) in the Southwest Mojave Desert 莫哈韦沙漠西南部仙人掌属植物的果实生产和种子传播

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0108

M. Borchert, C. Tyler

{"title":"Fruit Production and Seed Dispersal of Opuntia phaeacantha (Cactaceae) in the Southwest Mojave Desert","authors":"M. Borchert, C. Tyler","doi":"10.2985/026.029.0108","DOIUrl":"https://doi.org/10.2985/026.029.0108","url":null,"abstract":"Abstract: Mode of reproduction in the genus Opuntia varies among species but often includes both vegetative and sexual reproduction, with the latter often facilitated by animal seed dispersal. In this multi-year study, we examined fruit and seed production and seed dispersal in the Mojave prickly pear (Opuntia phaeacantha) at two sites in the southwest Mojave Desert. Between 2015–2020 we counted fruits on randomly selected cactus patches, quantified fruit losses from those patches over time, collected fruits, and extracted and counted seeds. To assess seed dispersal, we collected fresh mammal pellets in belt transects at one site from 2016–2018; pellets were examined for Opuntia seeds. To assess animal fruit consumption and removal, we installed camera traps at one site. We baited selected patches with fruits and photographed animals that consumed or removed fruits. Fruit numbers varied widely among years and sites, although fruit production was not significantly correlated with climatic variables. Fruit losses were high at both sites, occurring more slowly in years of high fruit production. Seeds per fruit also varied with means ranging from 65 to 125 seeds. Rabbit and deer (Odocoileus hemionus) pellets were abundant at one site where we found 0.02 seeds per rabbit pellet but none in deer pellets. Camera traps baited with fruits revealed that they disappeared more quickly from patch edges than from patch interiors. Desert cottontails (Sylvilagus audubonii) and California jackrabbits (Lepus californicus) dominated photographs at patch edges while nearly all interior photographs were of white-tailed antelope squirrels (Ammospermophilus leucurus). In summary, although the number of seeds produced by O. phaeacantha is highly variable, the total number per site is high in some years, and fruits are consumed and seeds spread by animal dispersers.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"21 1","pages":"49 - 56"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73636088","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: 0

Two New Geophytic Species of Peperomia Subgenus Tildenia (Piperaceae) from Central Peru 秘鲁中部胡椒亚属二新种(胡椒科)

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0105

Guillermo Pino, Marie‐Stéphanie Samain, Efraín Suclli, Andrés Alcalá, Daniel Marquiegui

{"title":"Two New Geophytic Species of Peperomia Subgenus Tildenia (Piperaceae) from Central Peru","authors":"Guillermo Pino, Marie‐Stéphanie Samain, Efraín Suclli, Andrés Alcalá, Daniel Marquiegui","doi":"10.2985/026.029.0105","DOIUrl":"https://doi.org/10.2985/026.029.0105","url":null,"abstract":"Abstract: Two new geophytic species of Peperomia subgenus Tildenia (Piperaceae) from Central Peru are described; (1) Peperomia pachyspadix is a new species from Huancavelica. It is phenotypically similar to P. andina from Cajamarca, but its leaves are not as thick and they lack the funnel shape and purple color of the abaxial side; it is also similar to P. wernerrauhii from Huánuco, but its leaves and tubers are larger. The new species can be distinguished from the abovementioned ones by the spadix, many times shorter and twice as thick. The seeds of P. andina, P. wernerrauhii and P. pachyspadix are similar in shape but the latter has the largest of all three. (2) Peperomia fundus-oculi is a new species with epigeous tuber discovered on the eastern Andean slopes of Ayacucho. Plants are morphologically like P. chutanka for its exposed and branched aerial tubers. Its leaves have a shape similar to this species but are not as succulent, they lack the purplish color of the abaxial side, and they have a characteristic pattern on its adaxial side, with a whitish iridescent spot in the center, with irregular margins, from where nerves emerge, giving the impression of the eye fundus, hence its name in Latin. Its anthers, ovaries, and fruits are also shorter than those of P. chutanka.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"40 1","pages":"27 - 35"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82868990","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: 0

Rediscovery of Crassula subulata var. hispida (Crassulaceae subfam. Crassuloideae)

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0112

Steven Molteno, Margrit Bischofberger

引用次数: 0

Opuntia setocarpa (Cactaceae, Opuntioideae): Phylogenetic Hypothesis and Notes 刺麻(仙人掌科，刺麻总科):系统发育假说与注释

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0106

C. R. Martínez-González, R. Cuevas-Guzmán, J. Jiménez-Ramírez, J. MASCORRO-GALLARDO

引用次数: 0

Cactaceae Inventory of Venezuela: Estimates from Herbarium Collections 委内瑞拉仙人掌科目录:来自植物标本馆的估计

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0110

A. Sánchez-Urdaneta, Ciolys Beatriz Colmenares de Ortega, Jorge Ortega-Alcalá, Gisela del Carmen Rivero-Maldonado, Darisol Lisbeth Pacheco-Rivera, Guillermo Antonio Sthormes-Méndez, B. Bracho-Bravo, Bernardette Medina, Vicky de La Cruz Chirinos-Moreno, Ernesto Suarez-Calleja, Betzabeth del Consuelo Gil, Dianelis del Carmen Sánchez-Urdaneta, Steve Simón Belzares-Barboza, C. B. Peña-Valdivia, J. A. Reyes-Agüero, Y. Terán, Ramón Antonio D'Aubeterre-Marcano, Joël Lodé

{"title":"Cactaceae Inventory of Venezuela: Estimates from Herbarium Collections","authors":"A. Sánchez-Urdaneta, Ciolys Beatriz Colmenares de Ortega, Jorge Ortega-Alcalá, Gisela del Carmen Rivero-Maldonado, Darisol Lisbeth Pacheco-Rivera, Guillermo Antonio Sthormes-Méndez, B. Bracho-Bravo, Bernardette Medina, Vicky de La Cruz Chirinos-Moreno, Ernesto Suarez-Calleja, Betzabeth del Consuelo Gil, Dianelis del Carmen Sánchez-Urdaneta, Steve Simón Belzares-Barboza, C. B. Peña-Valdivia, J. A. Reyes-Agüero, Y. Terán, Ramón Antonio D'Aubeterre-Marcano, Joël Lodé","doi":"10.2985/026.029.0110","DOIUrl":"https://doi.org/10.2985/026.029.0110","url":null,"abstract":"Abstract: Cactaceae-Angiospermae, of American origin, with worldwide naturalized distribution, includes promising species in economics and ecology; being a threatened group, it requires floristic studies that support conservation programs. This study estimates the number of cacti species present in Venezuela, and it contributes to the knowledge of the family in the country by reviewing herbaria specimens. The information came from the herbaria (FLASA, IUTAG, HERZU, HMBLUZ, MER, MY, MYF, PORT and VEN) of the country. It was transcribed into a database and organized by herbaria, genus and species, based on the labels of the exsiccatae and digital photographs of the specimens. In addition, foreign specialists were consulted to resolve doubts about the identity of some taxa. The botanical specimens reviewed totaled 2,293. In Venezuela the family Cactaceae is represented by 26 genera, 63 species, 13 synonymies, six subspecies, one variety and 17 genera with unidentified species, including wild, cultivated and endemic species. Opuntia stood out for its greatest number of species (15), followed by the genera Melocactus (10), Epiphyllum and Cereus (6), Selenicereus, Pilosocereus and Cylindropuntia (4), Hylocereus (3), Rhipsalis, Mammillaria, Pereskia and Leuenbergeria (2). The other genera presented one species. The information generated here can be an input for the design of strategies for conservation, selection, production or other uses of the species of this important botanical group.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"16 1","pages":"67 - 82"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77090957","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: 0

From the Editor 来自编辑

4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0101

引用次数: 0

Two New Species of Aizoaceae (Ruschieae, Ruschoideae) from the Cape, South Africa. 标题南非好望角菊科二新种(菊科，菊科)。

IF 1.5 4区生物学

Haseltonia Pub Date : 2023-03-08 DOI: 10.2985/026.029.0103

C. Klak, P. Hanáček, P. Bruyns

引用次数: 0