compared gametophytic development of three species of phebodium (polypodiaceae, s.str.)
Clicks: 266
ID: 138686
1998
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Abstract
A comparison was made of the gametophytic development of Phlebodium araneosum, P. pseudoaureum and P. decumanum. Spores were collected from several Mexican localities ranging in altitude from 30 to 2300 m and sown on agar with mineral salts. Similarities in germination type and prothallial development were observed. Adult gametophytes are cordate-spathulate to cordate-reniform; gametangia are of the tipical type of the common leptosporangiate ferns. All three species share similar morphogenetic features of the gametophytes, and these do not lend additional characteristics to support the distinction of Phlebodium from Polypodium, Microgramma and Niphidium, as regard the sexual phase.
Una comparación del desarrollo del gametofito de Phlebodium araneosum, P. pseudoaureum y P. decumanum fue hecha. Las esporas fueron sembradas en agar con sales minerales. Similitudes en el tipo de germinación y desarrollo protálico fueron observadas. Los gametofitos adultos fueron cordiforme-espatulados a cordiforme-reniformes; los gametangios son del tipo común de los helechos leptosporangiados. Las tres especies muestran caracteristicas morfogenéticas del gametofito similares y no a aden características adicionales que apoyen la distinción entre Phlebodium, Polypodium, Microgramma y Niphidium, por lo que se refiere a la fase sexual.
Una comparación del desarrollo del gametofito de Phlebodium araneosum, P. pseudoaureum y P. decumanum fue hecha. Las esporas fueron sembradas en agar con sales minerales. Similitudes en el tipo de germinación y desarrollo protálico fueron observadas. Los gametofitos adultos fueron cordiforme-espatulados a cordiforme-reniformes; los gametangios son del tipo común de los helechos leptosporangiados. Las tres especies muestran caracteristicas morfogenéticas del gametofito similares y no a aden características adicionales que apoyen la distinción entre Phlebodium, Polypodium, Microgramma y Niphidium, por lo que se refiere a la fase sexual.
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prez-garca1998revistacompared
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| Authors | ;Blanca Pérez-García;Ramón Riba;Aniceto Mendoza;Irma Reyes J. |
| Journal | science journal of university of zakho |
| Year | 1998 |
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