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Publication Type J
Authors Tobe, K., X. M. Li and K. Omasa
Title Seed germination and radicle growth of a halophyte, Kalidium caspicum (Chenopodiaceae)
Source Annals of Botany
Author Keywords Chinese desert; radicle growth; germination; halophyte; Kalidium caspicum; salinity Salinity; temperature
Abstract Effects of temperature, light, NaCl and polyethylene glycol (PEG)-6000 on seed germination and radicle growth in a halophytic shrub, Kalidium caspicum (L.) Ung.-Sternb. were investigated. When seeds were incubated in deionized water at constant temperatures between 10 and 30 degrees C, the percentage germination in the dark exceeded 75%; light suppressed seed germination at alternating temperatures. Incubating seeds with a hypersaline solution of NaCl for 30 d had no adverse effect on their germinability. The percentage germination of seeds incubated with a -0.8 MPa NaCl solution was 73, 80 and 54% at 10, 20 and 30 degrees C, respectively, but all radicles died before their length exceeded 5 mm. In contrast, when seeds were incubated with a -0.8 MPa PEG solution at 20 degrees C, 68% of seeds germinated, and 95% of the emerging radicles survived beyond 5 mm. The high sensitivity of small radicles of this species to salinity indicated that salt must be removed from the soil surface for seedling establishment. (C) 2000 Annals of Botany Company.
29-Character Source Abbreviation Ann. Bot.
Year Published 2000
Volume 85
Issue 3
Beginning Page 391-396
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