| Response of mongolian almond seed germination and seedling growth to osmotic stress |
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| DOI：10.7606/j.issn.1000-7601.2014.01.031 |
| Key Words: Prunus mongolica Maxim germination percentage water uptake rate germination rate osmotic stress |
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| Abstract: |
| Mongolian almond (Prunus mongolica Maxim) is an endangered species in Mount Qilian Nature Reserve. This study investigated the response of its seed germination and seedling growth to drought stress, using osmotic treatments by PEG-6000 solution. The result indicated that rate of imbibition, germination, index of germination and seedling vigor, seedling height, and root length decreased as the concentration of PEG-6000 increased. The fresh seedling dry weight, root dry weight, and root/shoot ratio first increased and then decreased. Mongolian almond seed was sensitive to changes in soil water potential, with the minimum threshold for germination being 0.65 MPa. Response chara
cteristics of the drough stress of mongolian almond seed germination and seedling growth have important meaning for the continuation of the species. |
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