Results 1 to 10 of about 445 (163)

Cypripedium subtropicum embryo development and cytokinin requirements for asymbiotic germination [PDF]

Botanical Studies, 2022
Background Cypripedium subtropicum is a unique, endangered lady’s slipper orchid with evergreen leaves on non-dormant shoots that is native to southwestern China. This study documents the major developmental events in C. subtropicum seed development from
Holger Perner, Rong Zhou, Wenqing Perner, Hong Jiang, Yung-I. Lee   +4 more
doaj   +4 more sources

Broad Fungal Compatibility and Seed Size May Facilitate Invasiveness in Two Asian Terrestrial Orchids Spathoglottis plicata and Arundina graminifolia [PDF]

Ecology and Evolution
Two Asian orchids, the bamboo orchid (Arundina graminifolia) and the Philippine ground orchid (Spathoglottis plicata), are expanding into South and Central America, the Pacific, and Africa. Here, we tested whether seed traits and low in vitro selectivity
Tomáš Figura, Edita Tylová, František Novák, Vincent S. F. T. Merckx, Jan Ponert, Julita Minasiewicz, Marc‐André Selosse, Florent Martos   +7 more
doaj   +3 more sources

Improvement of In Vitro Seed Germination and Shoot Development of the Indonesian Endangered Orchid, Dendrobium lineale Rolfe, Using Sucrose and Coconut Water [PDF]

Scientifica
Dendrobium lineale Rolfe is an important orchid species used as a parent in breeding. Currently, this orchid is classified as an endangered species and is listed in Appendix II according to CITES.
Edy Setiti Wida Utami, Sri Lestari, Dwi Kusuma Wahyuni, null Junairiah, Hery Purnobasuki, Sucipto Hariyanto, Nabila Istighfari, Ahmad Affan Ali Murtadlo, Siti Umamah   +8 more
doaj   +3 more sources

Asymbiotic germination and morphological studies of seeds of Atlantic Rainforest micro-orchids (Pleurothallidinae). [PDF]

PLoS ONE, 2020
The morphological and morphometric characters of seeds belonging to 11 species of the subtribe Pleurothallidinae using light and scanning electron microscopy were studied to understand the in vitro germination process.
Franciele Marx Koene, Érika Amano, Eric de Camargo Smidt, Luciana Lopes Fortes Ribas   +3 more
doaj   +5 more sources

Influence of Culture Conditions on In Vitro Asymbiotic Germination of Anacamptis longicornu and Ophrys panormitana (Orchidaceae) [PDF]

Plants, 2021
This study is the first approach to in vitro asymbiotic germination of two species of Sicilian threatened terrestrial orchids, Anacamptis longicornu and Ophrys panormitana.
Myriam Arcidiacono, Caterina Catalano, Antonio Motisi, Maurizio Sajeva, Francesco Carimi, Angela Carra   +5 more
doaj   +2 more sources

The challenges of growing orchids from seeds for conservation: An assessment of asymbiotic techniques [PDF]

Applications in Plant Sciences, 2022
Lewis Knudson first successfully germinated orchid seeds asymbiotically on artificial medium in 1922. While many orchid species have since been grown asymbiotically, the tremendous variation in how species respond to artificial medium and growth ...
Devani Jolman, Martín I. Batalla, Alexis Hungerford, Pryce Norwood, Noah Tait, Lisa E. Wallace   +5 more
doaj   +2 more sources

Training a Model to Predict Asymbiotic Germination of Orchid Seeds on the Basis of Subfamily, Seed Morphology and Niche Profile [PDF]

Plants
Although asymbiotic orchid seed germination was first achieved in vitro in 1922, the prediction of germination requirements under in vitro conditions still remains complicated. To address this, we developed a machine learning framework to classify the ex
Spyridon Oikonomidis, Anush Nersesyan, Hripsik Kosyan, Sonya Vardanyan, Costas A. Thanos   +4 more
doaj   +2 more sources

Fluridone stimulates in vitro seed germination of a rare hardy terrestrial orchid (Platanthera leucophaea) [PDF]

Botanical Studies
Background Seeds of temperate terrestrial (hardy) orchids are considered more difficult to germinate compared to their tropical epiphytic counterparts, presumably because they have higher levels of abscisic acid (ABA) in their seed coats which prevents ...
Rachel E. Helmich, Lawrence W. Zettler, Caleb J. Dvorak, Susanne DiSalvo   +3 more
doaj   +2 more sources

Circannual Clock in Laelia speciosa (Orchidaceae) Through Dormancy vs. Germination Dynamics of Seeds Stored Under Controlled Conditions [PDF]

Plants
This study aimed to determine the dynamics of dormancy using triphenyl tetrazolium chloride (TTC) and asymbiotic germination in Laelia speciosa (Kunth) Schltr. seeds stored for three years and one year at different temperatures.
Erandeni Durán-Mendoza, Martha Cornejo-Gallegos, Alejandro Martínez-Palacios, Martha Elena Pedraza-Santos, Nahum M. Sánchez-Vargas, Guadalupe Alejandra Valdovinos-Ramírez, Adelaida Stephany Hernández-Valencia, Juan Manuel Chavarrieta-Yáñez, Eloísa Vidal-Lezama, María del Carmen Mandujano-Sánchez   +9 more
doaj   +2 more sources

Reproductive Constraints and Severe Pollinator Limitation in the Mexican Endemic Orchid Govenia capitata: Implications for Conservation [PDF]

Plants
Understanding the reproductive biology of orchids is essential for evaluating population viability and guiding conservation strategies, as their persistence often depends on complex interactions between ecological, physiological, and environmental ...
Maythe López-Olvera, Gema Galindo-Flores, Ana Laura López-Escamilla, Carlos Lara   +3 more
doaj   +2 more sources