Results 11 to 20 of about 487 (171)

Chemical ecology of symbioses in cycads, an ancient plant lineage. [PDF]

New Phytol
Summary Cycads are an ancient lineage of gymnosperms that maintain a plethora of symbiotic associations from across the tree of life. They have myriad morphological, structural, physiological, chemical, and behavioral adaptations that position them as a unique system to study the evolution, ecology, and mechanism of symbiosis.
Salzman S, Bustos-Díaz ED, Whitaker MRL, Sierra AM, Cibrián-Jaramillo A, Barona-Gómez F, Villarreal Aguilar JC.   +6 more
europepmc   +2 more sources

Early evolutionary history of the seed. [PDF]

Biol Rev Camb Philos Soc
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Bateman RM, Spencer ART, Hilton J.
europepmc   +2 more sources

La gerencia social en la Universidad Nacional Intercultural de la Amazonía y su relación con la implementación de una política educativa con enfoque intercultural

Lengua y Sociedad, 2021
El proceso de implementación de toda política o programa es complejo en sí mismo y puede presentar una serie de factores que dificultan su desarrollo. El establecimiento de una política educativa con enfoque intercultural no es ajeno a ello, pues —como ...
Zamia Ivon Castillo Farroñay
doaj   +1 more source

Pollen morphology of the Megamexican cycads reveals the potential of morphometrics to identify cycad genera

Botan‪ical Sciences, 2020
Background: Although pollen morphology has always been an important tool in plant systematics, the possibility of distinguishing between related taxa is still debated. A difficult case is the cycads, where their morphology and small size is very similar.
Andrew P. Vovides, Roger Guevara, Mario Coiro, Sonia Galicia, Carlos Iglesias   +4 more
doaj   +1 more source

Highly Successful Adventitious Root Formation of Zamia L. Stem Cuttings Exhibits Minimal Response to Indole-3-Butyric Acid

HortScience, 2020
The influences of indole-3-butyric acid (IBA) concentrations of 0–30 mg·g−1 on the success and speed of adventitious root development of Zamia furfuracea L.f. and Zamia integrifolia L.f. stem cuttings were determined.
Benjamin E. Deloso, Anders J. Lindström , Frank A. Camacho, Thomas E. Marler   +3 more
doaj   +1 more source

The Embryogeny of Zamia [PDF]

Botanical Gazette, 1903
(WITH PLATES VI-VIII) OUR knowledge of the development of the embryo of Cycadales is very meager, being largely included in Treub's (5) account of Circas circinalis and Ikeno's (8) of Cycas revoluta. These two accounts agree in every important particular, and deal chiefly with the development of the proembryo.
Coulter, John M., Chamberlain, Charles J.   +1 more
openaire   +1 more source

IDENTIFICATION OF SEX IN ZAMIA INERMIS USING ISSR MARKERS [PDF]

Journal of Plant Development, 2021
Zamia inermis is a dioecious cycad endemic to the State of Veracruz that is on the risk extinction. Sex-specific markers are important in understanding the mechanism of sex determination.
Lourdes Georgina IGLESIAS-ANDREU, Enrique FAVIÁN-VEGA   +1 more
doaj   +1 more source

The assessment of Food Handlers’ Hygiene and Environmental Sanitation in Tofu Home Industry Jombang 2018

Jurnal Kesehatan Lingkungan, 2019
Food security is an important aspect to produce quality food that is feasible and safe for consumption by general population. Good Manufacturing Product (CPPB) is a guideline in assuring food security adhered in food production process starting from raw ...
Zamia Floridiana
doaj   +1 more source

Impact of Late Pleistocene-Holocene climatic fluctuations on the phylogeographic structure and historical demographics of Zamia prasina (Cycadales: Zamiaceae)

Botan‪ical Sciences, 2019
Background: Glacial periods during the Pleistocene have been hypothesized to have greatly influenced geographical patterns of genetic structure and demography of many tropical species.
Grecia Montalvo-Fernández, Lorenzo Felipe Sánchez-Teyer, Germán Carnevali, Andrew P. Vovides, Ricardo Gaytán-Legaria, Matilde Margarita Ortíz -García, Jaime Alejandro Muñoz-López, Jaime Martínez Castillo   +7 more
doaj   +1 more source

Toponymic Data Helps to Reveal the Occurrence of Previously Unknown Populations of Wild Zamia pumila L. on Volcanic Substrates in South Central Puerto Rico

Ethnobiology Letters, 2013
This is the first report of the occurrence of wild Zamia pumila L. Zamiaceae populations on various volcanic substrates in the piedmont area of south central Puerto Rico.
Jaime R. Pagán-Jiménez, Julio C. Lazcano-Lara   +1 more
doaj   +1 more source