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| Silva-e-Costa,Juliana da Costa; Luizi-Ponzo,Andrea Pereira; Resende,Cristiano Ferrara de; Peixoto,Paulo Henrique Pereira. |
| ABSTRACT In bryophytes, establishment can occur by a sexual or asexual process, but the production of spores enables colonization of a wider range of habitats and substrates than can asexual propagules. Successful germination is critical for establishment in a new environment. This paper addresses germination and sporeling development in Frullania ericoides, a leafy liverwort species. Fresh spores were inoculated in vitro in different culture strengths of Knop’s nutrient solution (one-fourth strength, half strength, full strength, one and a half strength and double strength), in order to evaluate the effects of this solution on spore germination and on the development of external protonema. On the first assessment, spore germination was observed at all the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endosporic development; Knop’s medium; Liverworts; Nutrients; Protonema; Sporeling. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100019 |
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| Liu,Shibiao; Wei,Hua; Peng,Xiaolie; Li,Jing. |
| ABSTRACT Dolichomitriopsis diversiformis is an endemic and threatened moss in eastern Asia. In vitro culture and light microscopic observation were employed to study its developmental process from spore germination to the formation of young gametophyte, as well as effects of light and temperature on its spore germination and protonemal development. Microscopic observations revealed that its spores were positively photoblastic with exosporous germination, and sporelings were classified as the bryum-type. Light and dark conditions were compared to understand their effects on spore germination. In 24 h continuous illumination, all spores germinated in both 20 ℃ and 25 ℃. In contrast, in darkness at 20 ℃ from one to 30 days, spores did not germinate. However,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dolichomitriopsis diversiformis; Spore; Protonema; Light; Temperature. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100202 |
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