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Publication Type J
Authors Khan, M. A., B. Gul and D. J. Weber
Title Improving seed germination of Salicorania rubra (Chenopodiaceae) under saline conditions using germination- regulating chemicals
Source Western North American Naturalist
Author Keywords gibberellic acid; ethephon; fusicoccin; halophytes; kinetin; seed dormancy; Salicornia rubra; thiourea GROWTH-REGULATORS; GIBBERELLIC-ACID; TEMPERATURE; DORMANCY; ALLEVIATION; FUSICOCCIN; STOCKSII; BINDING; NITRATE; STRESS
Abstract Salicornia rubra Nels. (Chenopodiaceae) is a salt-tolerant annual species occurring in salt playas of the Great Basin desert in western United States. It forms pioneer communities on the most saline location of an inland salt playa at Goshen, Utah. Seeds of Salicornia rubra are capable of germinating at 1000 mM NaCl at 25-35degreesC alternating temperature regime. Dormancy-regulating chemicals were evaluated for their ability to alleviate the innate and salinity-enforced dormancy in seeds of Salicornia rubra. Betaine, GA3, kinetin, fusicoccin, ethephon, thiourea, proline, and nitrate had no effect in alleviating primary dormancy. Increases in NaCl concentration progressively inhibited germination of Salicornia rubra seeds. Ethephon, fusicoccin, GA3, kinetin, thiourea, and nitrate promoted germination under low saline conditions. At high salinity fusicoccin had no effect, whereas GA3, kinetin, and ethephon substantially alleviated salinity effects. Application of these dormancy-regulating compounds could be of practical value in seeding a saline area for restoration purposes, particularly under high saline conditions.
Author Address Brigham Young Univ, Dept Bot & Range Sci, Provo, UT 84602 USA Brigham Young Univ, Dept Bot & Range Sci, Provo, UT 84602 USA Weber DJ Brigham Young Univ, Dept Bot & Range Sci, Provo, UT 84602 USA
29-Character Source Abbreviation West. North Am. Naturalist
Publication Date Jan
Year Published 2002
Volume 62
Issue 1
Beginning Page 101-105
Unique Article Identifier ISI:000174058500011
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