protonema


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protonema

(prō′tə-nē′mə)
n. pl. proto·nemata (-nē′mə-tə, -nĕm′ə-)
The filamentous growth that arises following spore germination in liverworts and mosses and develops into a mature gametophyte.

pro′to·ne′mal (-nē′məl), pro′to·ne′ma·tal (-nē′mə-təl, -nĕm′ə-) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

protonema

a haploid, branched, filamentous structure, produced by the germination of a moss spore, that produces new plants by budding.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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7, the fracture surfaces of EHBP-12/DGEBA composites became increasingly rough (more protonema) when the EHBPE content increased from 0 to 9 wt%.The fracture surface started to become smoother as the EHBP-12 content was increased beyond 9 wt%.
humicus, Physcomitrella Bacillus patens) megaterium Protonema Plant culture Treatment Boat orchid Ribavirin (Cymbidium Sw.) (VIRAZOLE[R]) at Protocorm 35ppm along with media Apple Mancozeb (15mg/L) (Malus domestica) thiabendazoles Axillary bud (40mg/L), silver nitrate (588 [micro]M) and Silveret77(0.01%) Valerian Nano silver (Valeriana.
The discovery came after the team compared DNA sequences and other genetic information from the protonema, with samples of C.
The Mt Erebus protonema was found to share a significant proportion of its genetic material with the three C.
Cytodifferentiation patterns of Dryopteris protonema modified by some chemical agents.
Collembola also eat moss protonema (Varga, 1992), transport fungus spores, and consume bacterial plant pathogens (Christiansen, 1964; Wiggins and Curl, 1979).
The protonema of these mosses is sensitive to desiccation (Thomas et al.
However, the particular conditions of in vivo or in vitro androgenesis would favour the development of a haploid embryo or callus, and not a small multicellular gametophyte (protonema) as in ferns, or even a haploid plant as is the case for mosses.
Algunas observaciones sobre germinacion de las esporas de los briofitos y la formacion del protonema ya fueron aportadas por Hedwig (1782) quien fue el primero en ilustrar el protonema.
The field has fine sand soil, was last farmed in 1957, and is characterized by Schizachyrium scoparium, Cyperus spp., and cryptogamic soil (a dark surface crust of cyanobacteria and moss protonema).
Against such a simple interpretation, Celakovsky classified the production of a leafy gametophore from a moss protonema as an alternation of homologous shoots.