|
Registro Completo |
|
Biblioteca(s): |
Embrapa Pantanal. |
|
Data corrente: |
29/06/1995 |
|
Data da última atualização: |
05/04/2017 |
|
Autoria: |
BELL, T. L.; PATE, J. S. |
|
Título: |
Morphotypic differentiation in the south-western Australian restiad Lyginia barbata R. Br. (Restionaceae). |
|
Ano de publicação: |
1993 |
|
Fonte/Imprenta: |
Australian Journal of Botany, v.41, n.1, p.91-104, 1993. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Study of Lyginia barbata across its distribution range in south-western Australia identified five distinctive morphotypes, viz. a tall-culmed, densely tufted fire-sensitive obligate seeder (S morphotype), a tall densely tutfed fire-resistant resprouter (R1) a short flexuose-culmed, tufted resprouter (R2) a weakly clonal, semi-tufted resprouter (R3) and a short-culmed, widely spreading clonal form (R4). There was little variation within a morphotype habitat locations and no evidence of intergrading of cohabiting morphotypes.
|
|
Palavras-Chave: |
Lyginia barbata (Restionaceae); Plant; Seed. |
|
Thesagro: |
Planta; Reprodução; Semente; Taxonomia. |
|
Thesaurus Nal: |
reproduction; taxonomy. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02077naa a2200241 a 4500
001 1784701
005 2017-04-05
008 1993 bl --- 0-- u #d
100 1 $aBELL, T. L.
245 $aMorphotypic differentiation in the south-western Australian restiad Lyginia barbata R. Br. (Restionaceae).
260 $c1993
520 $aStudy of Lyginia barbata across its distribution range in south-western Australia identified five distinctive morphotypes, viz. a tall-culmed, densely tufted fire-sensitive obligate seeder (S morphotype), a tall densely tutfed fire-resistant resprouter (R1) a short flexuose-culmed, tufted resprouter (R2) a weakly clonal, semi-tufted resprouter (R3) and a short-culmed, widely spreading clonal form (R4). There was little variation within a morphotype habitat locations and no evidence of intergrading of cohabiting morphotypes. <orphotype-specific differences were observed in culm height, rhizome morphology, culm density and spikelet morphology. Differences in reproductive biology related to the time of first reproduction in juvenile recruits, spikelet number per male and female culm, ovule number per female culm and seed: ovule ratio. Differences of a physiological nature were observed in seedling growth rates and proportional biomass (dry matter) allocations to culms, rhizomes, spikelets and seeds. Comparative quantitative scoring of the above features according to concepts of r- and K-selection rated the S form strongly r-selected, the R4 form equally strongly K-selected and the other forms (R1, R2 and R3) intermediate and with the R1 form possibly more r-selected than the others. It is suggested that the data provide a basis on which future taxonomic decisions regarding the taxon might be made.
650 $areproduction
650 $ataxonomy
650 $aPlanta
650 $aReprodução
650 $aSemente
650 $aTaxonomia
653 $aLyginia barbata (Restionaceae)
653 $aPlant
653 $aSeed
700 1 $aPATE, J. S.
773 $tAustralian Journal of Botany$gv.41, n.1, p.91-104, 1993.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pantanal (CPAP) |
|
