DAYLENGTH AND LIGHT RESPONSES IN GROWTH AND FERTILITY OF GLOSSOPHORA-KUNTHII (PHAEOPHYTA, DICTYOTALES) FROM PACIFIC SOUTH-AMERICA

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dc.contributor.authorHOFFMANN, AJ
dc.date.accessioned2025-01-23T19:24:45Z
dc.date.available2025-01-23T19:24:45Z
dc.date.issued1988
dc.description.abstractExcised ligulae of Glossophora kunthii (C. Ag.) J. Ag. were cultured in photoperiods of 4-24 h and photon fluence rates of 10-75 .mu.mol .cntdot. m-2 .cntdot. s-1. Daylength interacted with irradiance on the growth of the ligulae. Maximal growth of primary ligulae occurred in long-day regimes with high irradiances suggesting an effect of irradiance on photosynthesis and growth. In contrast, growth of secondary ligulae was greatest in short-day regimes. Differences were significant at the highest irradiance tested. Differentiation of tetrasporangia on the ligulae is a short-day photoperiodic response. Daylengths of 8.5 h or less induced a sharp increase in numbers of fertile ligulae and tetrasporangia attaining maturity. Interruptions of the dark period decreased the development of tetrasporangia; the number of interruptions had a cumulative inhibitory effect. Differentiation of reproductive structures was influenced by interactions of photoperiod and irradiance. Maximum numbers of tetrasporangia were formed at short-day regimes and low irradiances; differentiation was completely inhibited at long-day conditions and high irradiance.
dc.fuente.origenWOS
dc.identifier.eissn1529-8817
dc.identifier.issn0022-3646
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/99395
dc.identifier.wosidWOS:A1988N927200011
dc.issue.numero2
dc.language.isoen
dc.pagina.final208
dc.pagina.inicio203
dc.revistaJournal of phycology
dc.rightsacceso restringido
dc.subject.ods15 Life on Land
dc.subject.ods14 Life Below Water
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa14 Vida submarina
dc.subject.odspa13 Acción por el clima
dc.titleDAYLENGTH AND LIGHT RESPONSES IN GROWTH AND FERTILITY OF GLOSSOPHORA-KUNTHII (PHAEOPHYTA, DICTYOTALES) FROM PACIFIC SOUTH-AMERICA
dc.typeartículo
dc.volumen24
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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