Data/hora: 07/06/2024 06:30:40

Provedor de dados: 	87	
País: 	Brazil	
Título: 	ENVIRONMENTAL FACTORS AFFECTING SEED GERMINATION OF COMMON TEASEL (Dipsacus fullonum)	
Autores: 	DADDARIO,J.F.F.; BENTIVEGNA,D.J.; TUCAT,G.; FERNÁNDEZ,O.A.	
Data: 	2017-01-01	
Ano: 	2017	
Palavras-chave: 	Invasive weed; Dry storage; Osmotic stress; PH; Salt concentration; Temperature.	
Resumo: 	ABSTRACT Common teasel is a widespread, invasive species that has been introduced in Buenos Aires province, Argentina, where it alters the species composition of protected areas and native grasslands. A better understanding of seed germination behavior is essential for predicting its invasion potential in new areas and would be useful for developing effective management strategies. This research, conducted under laboratory conditions, evaluated the influence of several environmental factors such as pH, constant temperature, osmotic stress, salt stress and dry storage, on germination and rate of germination of common teasel seed. Between-year variation in germination responses was also examined. Seed germination was not affected by different pH levels. Although common teasel seeds germinated over a range of temperatures from 6 to 36 oC, the optimum temperature was 22 oC. Common teasel seed germination showed moderate tolerance to osmotic stress and a relatively high tolerance to salt stress. No seed germination was observed at - 1 MPa and 640 mM of osmotic potential and salt concentration, respectively. Seed germination remained high (&gt; 90%) after all the dry storage treatments. Besides, the response of seeds to germination parameters showed between-year variation. It was shown that common teasel is able to germinate over a broad range of environmental conditions. This capacity would explain, at least partially, why this species is so widely distributed and its great potential to invade new areas.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100263	
Editor: 	Sociedade Brasileira da Ciência das Plantas Daninhas	
Relação: 	10.1590/s0100-83582017350100065	
Formato: 	text/html	
Fonte: 	Planta Daninha  v.35 2017	
Fonte: 	info:eu-repo/semantics/openAccess