The effects of salinity, acidity, light and temperature on the germination of seeds of cardon ( Pachycereus pringlei (S. Wats.) Britton & Rose, Cactaceae)
Authors: Nolasco H.1; Vega-Villasante F.1; Romero-Schmidt H.L.2; Diaz-Rondero A.3
Source: Journal of Arid Environments, Volume 33, Number 1, 1996 , pp. 87-94(8)
Publisher: Academic Press
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Abstract:
The germination of Pachycereus pringlei seeds was evaluated for salinity stress and after acid and temperature treatments. A negative response to saline environments on seed germination was observed. However, seeds that had been exposed to 0?2 and 0?3 M NaCl were able to germinate in distilled water. Seeds treated for 3 min with 0?25 to 0?75 M HCl showed increased germination. Seeds did not show any specific requirement for light quality or dark conditions and were not affected by UV-light exposure. Seeds were able to germinate after exposure to temperatures of -50 to 70#&176;C; however, a long exposure (22 days) at 70#&176;C prevented germination.
Keywords: Pachycereus; temperature; salinity; acidity; light
Language: English
Document Type: Miscellaneous
Affiliations: 1: Laboratory of Comparative Biochemistry and Physiology, Department of Biochemistry, Centro de Investigaciones Biologicas del Noroeste, S.C., La Paz, B.C.S., 23000, Mexico 2: Sustainable Development Group, Centro de Investigaciones Biologicas del Noroeste, S.C., La Paz, B.C.S., 23000, Mexico 3: INTERCACTI Group, Guasinapi #180, La Paz, B.C.S., 23060, Mexico
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