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This study investigated seed germination of Crataegus pseudoheterophylla Pojark using different combinations of growth promoting rhizobacteria and stratification regimes. The PGPR treatments were Azotobacter chroococcum 12, Azospirillum lipoferum OF, Pseudomonas fluorescens 169, Bacillus subtilis FzB24 and combinations (co-inoculation) using two or all PGPR inoculants. The control was no inoculation followed by stratification. Temperature regulation in the stratification regime was 1 month at the constant temperature of 23 °C, then 3 months at 4 °C. The alternate temperature regime was 1 month at 4 °C, then 2 weeks at 23 °C followed by 1 month at 4 °C, then 2 weeks at 23 °C, then 1 month at 4 °C. The effects of these treatments were evaluated and results showed that treatments of PGPR inoculation stimulated germination in terms of percentage of seed germination, speed of germination and mean germination time, and effect was significant at (p |
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