期刊
ACTA PHYSIOLOGIAE PLANTARUM
卷 31, 期 4, 页码 861-864出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11738-009-0297-0
关键词
Salinity; Wheat; Phytohormones; Plant growth promoting rhizobacteria
资金
- UNESCO-L'OREAL Fellowship for Women in Science''
The action of phytohormone producing bacteria and plant growth regulators on germination and seedling growth of wheat under saline conditions were studied. Seed dormancy enforced by salinity (100 mM NaCl) was substantially alleviated and the germination was promoted by gibberellin, auxin, zeatin, and ethephon from 54 to 97%. The IAA producing bacterial strains Pseudomonas aureantiaca TSAU22, Pseudomonas extremorientalis TSAU6 and Pseudomonas extremorientalis TSAU20 significantly increased seedling root growth up to 25% in non-salinated conditions and up to 52% at 100 mM NaCl, compared to control plants. It is concluded that growth regulators considerably alleviated salinity-induced dormancy of wheat seeds. The facts mentioned above make it possible to recommend root colonizing bacteria that produce phytohormone to alleviate salt stress of wheat grown under conditions of soil salinity.
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