Search Results - "Sanchez, J. Hugo Cota"

A molecular phylogeny of the grass subfamily Panicoideae (Poaceae) shows multiple origins of C4 photosynthesis by Giussani, Liliana M, Cota-Sanchez, J. Hugo, Zuloaga, Fernando O, Kellogg, Elizabeth A

“…DNA sequence data from the chloroplast gene ndhF were analyzed to estimate the phylogeny of the subfamily Panicoideae, with emphasis on the tribe Paniceae. Our…”
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Variation in chromosome number and breeding systems: implications for diversification in Pachycereus pringlei (Cactaceae) by Gutiérrez-Flores, Carina, la Luz, José L León-de, León, Francisco J García-De, Cota-Sánchez, J Hugo

“…Polyploidy, the possession of more than two sets of chromosomes, is a major biological process affecting plant evolution and diversification. In the Cactaceae,…”
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Synchrotron micro-computed tomography unveils the three-dimensional structure and origin of staminodes in the Plains Prickly Pear Cactus Opuntia polyacantha Haw. (Cactaceae) by Cota-Sánchez, J. Hugo, Falconer, Denver J., de Almeida, Odair J. G., Stobbs, Jarvis A., Vera-Vélez, Roy, Rice, Ryan S., Belliveau, Nicholas A.

“…Floral appendages display an array of shapes and sizes. Among these organs, staminodes are morphologically diverse structures that have lost the ability to…”
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The value of virtual natural history collections for botanical instruction in these times of the COVID-19 pandemic by Hugo, Cota-Sánchez J

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Seedling morphology and development in the epiphytic cactus Epiphyllum phyllanthus (L.) Haw. (Cactaceae: Hylocereeae) by Almeida, Odair J. G., Paoli, Adelita A. S., Souza, Luiz A., Cota-Sánchez, J. Hugo

“…Seedling morphology is relevant in classification, taxonomy, and vegetation studies to understand plant life cycles, germination succession and requirements,…”
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Vivipary and offspring survival in the epiphytic cactus Epiphyllum phyllanthus (Cactaceae) by Cota-Sánchez, J. Hugo, Abreu, Deusa D

“…Vivipary, the germination of seeds before they are shed from the parent plant, is a rare event in angiosperms involving complex ecophysiological processes…”
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Comparative Floral Structure of Four New World Allium (Amaryllidaceae) Species by Choi, Hyeok Jae, Davis, Arthur R, Cota-Sánchez, J. Hugo

“…Scanning electron microscopy has allowed the characterization of cell pattern and ornamentation of the bulb coat, leaf, and seed coat, thereby improving and…”
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A compendium of vivipary in the Cactaceae: new reports, data, and research prospects by Hugo, Cota-Sánchez J

“…This review examines the historical research progress and areas of vivipary currently investigated in the Cactaceae. Vivipary, a rare attribute, has evolved…”
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Biodiversity, dynamics, and impact of chakras on the Ecuadorian Amazon by Vera V, Roy R, Cota-Sánchez, J Hugo, Grijalva Olmedo, Jorge E

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Vivipary in coastal cacti: a potential reproductive strategy in halophytic environments by Cota-Sánchez, J. Hugo, Reyes-Olivas, Álvaro, Sánchez-Soto, Bardo

“…Vivipary, the germination of seeds within the fruit prior to abscission from the maternal plant, is an important event in plants. Two main types of vivipary…”
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Cocoa agroforestry and tree diversity in relation to past land use in the Northern Ecuadorian Amazon by Vera-Vélez, Roy, Grijalva, Jorge, Cota-Sánchez, J. Hugo

“…Shifting agriculture (SA) involving fallow intervals between crop cycles is common in tropical areas. It allows the recovery of soil fertility for subsequent…”
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Floral morphology and reproductive biology in selected maple (Acer L.) species (Sapindaceae) by Rosado, Aline, Vera-Vélez, Roy, Cota-Sánchez, J. Hugo

“…This study focuses on variation in reproductive systems in Acer (maple) species, and how Acer might be a useful genus for understanding floral morphology and…”
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Ready-to-use DNA extracted with a CTAB method adapted for herbarium specimens and mucilaginous plant tissue by Cota-Sanchez, J.H, Remarchuk, K, Ubayasena, K

“…This report summarizes major changes in previously published protocols for DNA extraction to improve the quality of DNA extracted from plants. Here, we…”
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Macro- and micromorphological characterization of staminodes in the Plains Prickly Pear Opuntia polyacantha Haw. (Cactaceae) by Rice, Ryan S., Vera-Vélez, Roy, Falconer, Denver J., Belliveau, Nicholas A., Cota-Sánchez, J. Hugo

“…Staminodes are floral structures occurring in approximately one-third of the angiosperms. These organs often go unnoticed in nature because they may mimic…”
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First account of vivipary in Saussurea lappa (Decne.) Sch. Bip. (Asteraceae) by Chauhan, Rajendra S., Bahuguna, Y. M., Nautiyal, M. C., Cota-Sánchez, J. Hugo

“…Saussurea lappa (Decne.) Sch. Bip. (Asteraceae) is a crop used for its medicinal and aromatic properties, but it has become critically endangered due to…”
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A novel supermatrix approach improves resolution of phylogenetic relationships in a comprehensive sample of danthonioid grasses by Pirie, Michael D., Humphreys, Aelys M., Galley, Chloe, Barker, Nigel P., Verboom, G. Anthony, Orlovich, David, Draffin, Suzy J., Lloyd, Kelvin, Baeza, C. Marcelo, Negritto, Maria, Ruiz, Eduardo, Sanchez, J. Hugo Cota, Reimer, Elizabeth, Linder, H. Peter

“…Phylogeny reconstruction is challenging when branch lengths vary and when different genetic loci show conflicting signals. The number of DNA sequence…”
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Distribution and Conservation Status of Sparganium (Typhaceae) in the Canadian Prairie Provinces by Ito, Yu, Cota-Sánchez, J. Hugo

“…We revised the distribution and conservation status of Sparganium L. for the Canadian Prairie Provinces (CPP) based on herbarium voucher specimens. In the…”
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Phylogenetic Relationships in the Genus Paspalum (Poaceae: Panicoideae: Paniceae): an Assessment of the Quadrifaria and Virgata Informal Groups by Giussani, Liliana M, Zuloaga, Fernando O, Quarín, Camilo L, Cota-Sánchez, J. Hugo, Ubayasena, Kumary, Morrone, Osvaldo

“…Paspalum, an American genus of the x = 10 Paniceae clade, includes about 330 species, four subgenera, and 27 informal groups. Within the genus, the Quadrifaria…”
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Beta diversity and fallow length regulate soil fertility in cocoa agroforestry in the Northern Ecuadorian Amazon by Vera-Vélez, Roy, Cota-Sánchez, J. Hugo, Grijalva-Olmedo, Jorge

“…Shifting agriculture (SA), a common practice in tropical areas, involves fallow phases between crop cycles, enabling the recovery of plant communities and soil…”
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Precocious Germination (Vivipary) in Tomato: A Link to Economic Loss? by Hugo Cota-Sánchez, J.

“…In plants, vivipary (precocious or premature germination) involves the germination of seeds while still on the parent plant. It is a widespread phenomenon in…”
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