Aging-Tolerence of Ultra-Dried Pinus armandii Seeds
Pinus armandii seeds were dried to different moisture contents of 8.54％, 7.49％, 6.58％, 5.40％, 4.39％, 3.46％ and 2.49％ by means of silica gel, and then stored at room temperature for eight months to age.The germinability, MDA contents and relative electrical conductivity of the seeds were measured combined with different treatments of humidification.Results show that when the moisture content (MC) is 4.39％ for eight months, the germination percentage, germination potential and germination index of P.armandii seeds stay relatively high levels, and the relative electrical conductivity and MDA contents are also lower.P.armandii seeds become more tolerant to aging condition when their moisture content is below 5％.Under aging condition, the germinability and vigor index of seeds without untra-dry treatment decrease significantly.Whereas, these parameters of seeds by ultra-dried treatment have no significant difference compared with the control.
NETL
NSTL
万方数据
维普
