Results 101 to 110 of about 283 (121)
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Phytoparasitica, 2021
This study was conducted to elucidate the identification of Moneilema variolare Thomson, 1867, as a new pest to Pachycereus marginatus (DC.) Britton & Rose. Behavior, identification, and damages were investigated for 3 years. Adults emerged from pupal chamber in late winter, and fed on Pachycereus stems.
Andrés Quezada-Salinas +7 more
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This study was conducted to elucidate the identification of Moneilema variolare Thomson, 1867, as a new pest to Pachycereus marginatus (DC.) Britton & Rose. Behavior, identification, and damages were investigated for 3 years. Adults emerged from pupal chamber in late winter, and fed on Pachycereus stems.
Andrés Quezada-Salinas +7 more
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Análisis cladístico del género Pachycereus (Cactaceae) con caracteres morfológicos
Brittonia, 2006Abstract The genus Pachycereus is restricted to Guatemala, Mexico, and the SW United States and includes 13 species according to the most recent classification. A phylogenetic analysis was conducted in order to test the monophyly of Pachycereus with respect to other genera of subtribe Pachycereinae.
Salvador Arias, Teresa Terrazas
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Journal of the Professional Association for Cactus Development, 2023
The establishment of Pachycereus pringlei seedlings is a scarce event; soil conditions are one of the factors attributed to its high mortality rate in the early stages of development. The use of organic manures as a substrate helps to improve the structure, porosity, and density of the soil where they live, in addition to providing nutrients that would
Joselyn Vanessa Seminario Peña +5 more
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The establishment of Pachycereus pringlei seedlings is a scarce event; soil conditions are one of the factors attributed to its high mortality rate in the early stages of development. The use of organic manures as a substrate helps to improve the structure, porosity, and density of the soil where they live, in addition to providing nutrients that would
Joselyn Vanessa Seminario Peña +5 more
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Perspectives in Plant Ecology, Evolution and Systematics, 2016
Abstract Mating systems and long-term climatic fluctuations have large impact on genetic diversity and population structure of plants; however, the genetic consequences have been poorly documented in species with geographic variation in mating systems. Here we used genetic variation from microsatellite markers to investigate the biogeographic pattern
Carina Gutiérrez-Flores +3 more
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Abstract Mating systems and long-term climatic fluctuations have large impact on genetic diversity and population structure of plants; however, the genetic consequences have been poorly documented in species with geographic variation in mating systems. Here we used genetic variation from microsatellite markers to investigate the biogeographic pattern
Carina Gutiérrez-Flores +3 more
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Pollination biology of the columnar cactus Pachycereus pecten-aboriginum in north-western México
Journal of Arid Environments, 2004Columnar cacti in tropical deserts depend on nectar-feeding bats for their reproduction while species from extra-tropical deserts show a relatively generalized pollination system with both nocturnal and diurnal pollinators. Pachycereus pecten-aboriginum is a columnar cactus with a broad distribution along the Pacific coast of Mexico, from Oaxaca to ...
Francisco Molina-Freaner +3 more
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Seedling performance in a trioecious cactus,Pachycereus pringlei: Effects of maternity and paternity
Plant Systematics and Evolution, 1999We studied seed germination and the growth and survivorship of seedlings of females and hermaphrodites ofPachycereus pringlei (cardon), a Mexican columnar cactus whose geographically variable breeding system includes trioecy and gynodioecy. Results of a two-year field experiment conducted near Bahia Kino, Sonora, Mexico and a ten-month laboratory ...
Vinicio J. Sosa, Theodore H. Fleming
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Journal of Arid Environments, 2011
Abstract Few studies have determined the importance of orientation on flower reproductive success. Flower orientation may affect reproduction of Cactaceae; the interception of photosynthetic active radiation (PAR) differs along the different sides of cacti stems, and translocation of resources between cacti ribs does not appear to occur.
D.M. Figueroa-Castro, P.L. Valverde
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Abstract Few studies have determined the importance of orientation on flower reproductive success. Flower orientation may affect reproduction of Cactaceae; the interception of photosynthetic active radiation (PAR) differs along the different sides of cacti stems, and translocation of resources between cacti ribs does not appear to occur.
D.M. Figueroa-Castro, P.L. Valverde
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Journal of Arid Environments, 2008
Abstract The abundance of microorganisms in desert soil environments is closely related to the accumulation of resources around individual plants, called “islands of fertility”. This research was undertaken (1) to study the formation of islands of fertility in soils under Prosopis laevigata and Pachycereus hollianus in a preserved terrace and a ...
T.G. Ruiz, S.R. Zaragoza, R.F. Cerrato
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Abstract The abundance of microorganisms in desert soil environments is closely related to the accumulation of resources around individual plants, called “islands of fertility”. This research was undertaken (1) to study the formation of islands of fertility in soils under Prosopis laevigata and Pachycereus hollianus in a preserved terrace and a ...
T.G. Ruiz, S.R. Zaragoza, R.F. Cerrato
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Evolutionary Ecology, 1998
The Sonoran Desert columnar cactus Pachycereus pringlei has a geographically variable, non-hermaphroditic breeding system. It is trioecious (separate males, females and hermaphrodites) in the northern two-thirds of its range in Sonora, Mexico, and in the southern three-quarters of its range in Baja California, Mexico, and is gynodioecious (separate ...
Fleming, Theodore H +2 more
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The Sonoran Desert columnar cactus Pachycereus pringlei has a geographically variable, non-hermaphroditic breeding system. It is trioecious (separate males, females and hermaphrodites) in the northern two-thirds of its range in Sonora, Mexico, and in the southern three-quarters of its range in Baja California, Mexico, and is gynodioecious (separate ...
Fleming, Theodore H +2 more
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Flora, 2017
Abstract Studies on breeding systems and flower morphology are valuable to infer how environmental factors impose evolutionary change in plants. This study focused on the characterization of floral morphs and reproductive systems in Pachycereus pringlei and how this iconic columnar cactus might be a useful genus to understand the evolution of these
Carina Gutiérrez-Flores +3 more
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Abstract Studies on breeding systems and flower morphology are valuable to infer how environmental factors impose evolutionary change in plants. This study focused on the characterization of floral morphs and reproductive systems in Pachycereus pringlei and how this iconic columnar cactus might be a useful genus to understand the evolution of these
Carina Gutiérrez-Flores +3 more
openaire +1 more source