Szczegóły

Tytuł artykułu

The Effect of Temperature, Light and Calcium Carbonate on Seed Germination and Radicle Growth of the Polycarpic Perennial Galium cracoviense (Rubiaceae), a Narrow Endemic Species From Southern Poland

Tytuł czasopisma

Acta Biologica Cracoviensia s. Botanica

Rocznik

2015

Numer

No 1

Autorzy publikacji

Wydział PAN

Nauki Biologiczne i Rolnicze

Abstrakt

<jats:title>Abstract</jats:title> <jats:p>Germination responses of <jats:italic>Galium cracoviense</jats:italic> Ehrend. (Rubiaceae), a narrow endemic species from southern Poland, were tested in light and dark conditions at three constant temperatures (5, 10, or 22°C), before and after cold-wet stratification. Additionally, seeds were germinated under different calcium carbonate (CaCO<jats:sub>3</jats:sub>) concentrations (1, 5, 10, 15, 20, or 25 mM/L CaCO<jats:sub>3</jats:sub>) at 22°C in light. The high germination capacity of seeds incubated at different temperatures, shortly after collection, already suggested the absence of dormancy in this species. Thus, the seeds are ready to germinate immediately in the field when water resources are available and the temperature is adequate. Light was a significant factor for <jats:italic>G. cracoviense</jats:italic>; more seeds germinated in light than in darkness at all temperatures tested. Cold stratification decreased germination especially at higher temperatures. The light requirement for <jats:italic>G. cracoviense</jats:italic> germination ensures their successful germination on or near the soil surface, and in cracks and crevices in limestone, when temperature and edaphic conditions are favourable. Seeds of this species show temperature enforced dormancy throughout the winter. Germination was significantly affected by calcium carbonate. Non-germinated seeds germinated well after being transferred from higher CaCO<jats:sub>3</jats:sub> concentrations to distilled water. The results indicate that the seeds of this species can endure CaCO<jats:sub>3</jats:sub> stress without losing their viability and start germination once CaCO<jats:sub>3</jats:sub> concentration is reduced. It can be concluded that the seeds of this species require lower Ca<jats:sup>2+</jats:sup> ion concentration, moderate temperatures and the presence of light to germinate.</jats:p>

Wydawca

Biological Commission of the Polish Academy of Sciences – Cracow Branch

Data

2015[2015.01.01 AD - 2015.12.31 AD]

Identyfikator

ISSN 0001-5296 ; eISSN 1898-0295

Referencje

COLMER (1996), Leptogalium in northeastern Europe, Acta Societatis Botanicorum Poloniae, 79, 269. ; WANG (2009), TRAVLOS IS Seed germination of several invasive species potentially useful for biomass production or revegetation purposes under semiarid conditions Acta, Biologica Cracoviensia Series Botanica, 51, 35. ; RYAN (1975), Characterisation of emergence of autumn and spring cohorts of Galium spp in winter cereals Weeds Research Salt and spe - cific ion effects on germination of four grass, Journal of Range Management, 50, 572. ; BAROLI (2001), AMARAL - Phytochrome controls achene germination in Bidens pilosa ( Asteraceae ) by very low fluence response Brazilian Archives of Biology and The extent and role of seed dormancy in alpine plants The Quartely Review of Biology, Technology, 44, 121. ; AHMED (2010), REFERENCES Tolerance and recovery responses of playa halophytes to light , salinity and tem - perature stresses during seed germination, Flora, 25, 764, doi.org/10.1016/j.flora.2009.10.003

DOI

10.1515/abcsb-2015-0006

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