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Publication Type J
Authors Rueda-Puente, E. O., J. L. Garcia-Hernandez, P. Preciado-Rangel, B. Murillo-Amador, M. A. Tarazon-Herrera, A. Flores-Hernandez, J. Holguin-Pena, A. N. Aybar, J. M. B. Hoyos, D. Weimers, O. Mwandemele, G. Kaaya, J. L. Mayoral and E. Troyo-Dieguez
Title Germination of Salicornia bigelovii ecotypes under stressing conditions of temperature and salinity and ameliorative effects of plant growth-promoting bacteria
Source Journal of Agronomy and Crop Science
Author Keywords Azospirillum halopraeferens; ecotypes; Klebsiella pneumoniae; plant growth-promoting bacteria; Salicornia bigelovii; salinity; seed germination; temperature regime seed-germination; salt tolerance; oilseed halophyte; azospirillum-halopraeferens; nitrogen-fertilization; klebsiella-pneumoniae; spring wheat; europaea l; responses; genotypes
Abstract Salinity is a major stress condition. Salicornia bigelovii is a valuable edible halophyte, considered to be a promising resource for cultivation in arid coastal zones. Its productivity depends on the supplementary provision of nitrogen, for which an option is chemical fertilization. Nevertheless, indiscriminate use of chemical fertilizers contributes to the problem of increased salinity. The inoculation of plant growth-promoting bacteria (PGPB) represents an alternative. Seed ecotypes from four coastal areas [Santa Rosa Chica, Santa Rosa Grande, Santa Cruz and Cerro Prieto (CP), Sonora, Mexico] were collected, in order to inoculate them with two species of PGPB (Azospirillum halopraeferens and Klebsiella pneumoniae). Two germination tests were carried out to study the effect of salinity, temperature regime (night/day) and inoculation with PGPB on germination (percentage and rate), plant height, root length and biomass produced (fresh and dry matter). In the first test, all four ecotypes were considered, whereas in the second test only the CP ecotype was involved because it was found to be the outstanding ecotype in the previous test. Results showed inhibition of germination when salinity was higher in all ecotypes except CP. The CP ecotype showed a decrease of seed germination with an increase in NaCl concentrations at all temperatures tested. However, when it was inoculated with both PGPB, the germination percentage was influenced.
Author Address Univ Sonora, Sonora 84600, Mexico. Ctr Invest Biol Noroeste, La Paz 23090, Baja California, Mexico. Inst Tecnol Agropecuario, Torreon, Coahuila, Mexico. Univ Autonoma Chapingo, Unidad Reg Univ Zonas Aridas, Bermejillo 35230, Durango, Mexico. Univ Sonora, Direcc Invest & Posgrado, Unidad Ctr, Hermosillo, Sonora, Mexico. Univ Namibia, UNAM Fdn, Henties Bay, Namibia. Univ Namibia, Sam Nujoma Marine & Coastal Resources Res Ctr, Henties Bay, Namibia. Univ Namibia, Dept Biol, Windhoek, Namibia. Rueda-Puente, EO, Univ Sonora, Campus Santa Ana,Carreterra Int & 16 Septiembre S, Sonora 84600, Mexico. erueda04@santana.uson.mx
29-Character Source Abbreviation J. Agron. Crop Sci.
Publication Date Jun
Year Published 2007
Volume 193
Issue 3
Beginning Page 167-176
Unique Article Identifier ISI:000246364800002
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