In order to enhance the seed storability and supply high-quality seeds for vegetation restoration in the arid and semi-arid regions in Northwest China,the effects of ultra-drying and accelerated aging on the physiolog...In order to enhance the seed storability and supply high-quality seeds for vegetation restoration in the arid and semi-arid regions in Northwest China,the effects of ultra-drying and accelerated aging on the physiological characterstics of Melilotus suaveolens seeds were studied.Melilotus suaveolens seeds were dried in a desiccator containing silica gel to 80,53,42,33,23 and 16 g·kg-1 of moisture contents（MC）,respectively.The parameters of the seed quality including germination energy（GE）,germination percentage（GP）,relative conductivity（RC）,dehydrogenase activity（DA） and α-amylase activity（AA） were determined after ultra-drying and accelerated aging.The results showed that ultra-dried seeds with 42 g·kg-1 of MC showed the minimum changes of GE and GP before and after seed aging.Moreover,ultra-dry seeds with 42 g·kg-1 of MC showed higher DA and AA,and lower RC than non-ultra-drying seeds.Therefore,ultra-drying to 42 g·kg-1 of MC was helpful for M.suaveolens seed storage.展开更多
基金Supported by National Key Project of Scientifi c and Technical Supporting Programs of China (2006BAD09B06, 2006BAD03A0308)948 Program of Ministry of Water Resources of China (200207)
文摘In order to enhance the seed storability and supply high-quality seeds for vegetation restoration in the arid and semi-arid regions in Northwest China,the effects of ultra-drying and accelerated aging on the physiological characterstics of Melilotus suaveolens seeds were studied.Melilotus suaveolens seeds were dried in a desiccator containing silica gel to 80,53,42,33,23 and 16 g·kg-1 of moisture contents（MC）,respectively.The parameters of the seed quality including germination energy（GE）,germination percentage（GP）,relative conductivity（RC）,dehydrogenase activity（DA） and α-amylase activity（AA） were determined after ultra-drying and accelerated aging.The results showed that ultra-dried seeds with 42 g·kg-1 of MC showed the minimum changes of GE and GP before and after seed aging.Moreover,ultra-dry seeds with 42 g·kg-1 of MC showed higher DA and AA,and lower RC than non-ultra-drying seeds.Therefore,ultra-drying to 42 g·kg-1 of MC was helpful for M.suaveolens seed storage.
基金Supported by the National High Technology Research and Development Program of China （2001AA218061） and the National Natural Science Foundation of China （20236020）.
文摘salbutamol 硫酸盐(SS ) 的极其细小的粒子的准备与一条反应降水小径， salbutamol 和硫的酸与乙醇的溶剂在被用作反应物被完成。粒子的尺寸上的硫的酸集中，反应温度，激动人心的率，和反应时间的效果被调查。二进制混合物乳糖创作了， SS 被准备评估 SS。结果证明有控制直径在 3 渭 m 和 0.8 渭 m 之间变化并且与狭窄的分布的极其细小的 SS 粒子能被完成。由打的粒子组成的形态学成功地被获得。粒子的纯净上面与紫外察觉到达了 98% 。干燥粉末吸入的剂量被与重新使结晶的乳糖混合粒子获得，它充当了一个搬运人。在呼吸道的药的免职数量用一台成双的 impinger 仪器被估计。与 Shapuer 粉末相比(在市场上购买了) ，结果证明 SS 粒子把更多的数量在模拟的肺减退了。
