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Effect of ultra-drying on Vigor and Physiological Characteristics of Ziziphus jujuba var spinosa Seeds

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Chinese Forestry Science and Technology 2009年第4期8卷 34-40页

作者： LIU Yan1 LIU Guangquan1,2,3 LI Qingmei4 DUAN Xinfang5 HOU Longyu1 1. International Research and Training Center on Erosion & Sedimentation, Beijing 100048, P.R. China 2. China Institute of Water Resources and Hydropower Research, Beijing 100048, P.R. China 3. Northwest Agricultural and Forestry University, Yangling 712100, P.R. China. 4. Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, P.R. China 5 Institute of New Forestry Technology, Chinese Academy of Forestry, Beijing 100091, P.R. China

Using ultradry method and accelerated aging, storage behavior of Ziziphus jujuba var spinosa seeds with MC of 15-80 g/kg was studied. The results showed that seeds with MC of 24-80 g/kg could maintain the stabilization in germination percentage, vigor, relative conductivity, and enzyme activities; and during the ageing the seed storability increased with the moisture content decreased to 24 g/kg. Thus, it was feasible for the seeds to be stored under the ultra-dried condition.

关键词： ultra-drying germinability vigor enzyme activities Ziziphus jujuba var spinosa

Study of ultra-drying on Vigor and Physiological Characteristics of Lespedeza bicolor Seeds

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Chinese Forestry Science and Technology 2010年第2期9卷 56-61页

作者： LIU Yan1 LIU Guangquan1,2,3 LI Qingmei4 DUAN Xinfang5 HOU Longyu1 1. International Research and Training Center on Erosion & Sedimentation, Beijing 100048, P.R. China 2. China Institute of Water Resources and Hydropower Research, Beijing 100048, P.R. China 3. Northwest Agricultural and Forestry University, Yangling 712100, P.R. China 4. Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, P.R. China 5. Institute of New Forestry Technology, Chinese Academy of Forestry, Beijing 100091, P.R. China

ultra-drying (in a desiccator with silica gel) and accelerated aging (50 oC, 30 d) of Lespedeza bicolor seeds from the arid and semiarid areas of northwest China were studied. The results showed that in the moisture content of seed ( 43?70 g/kg), germination percentage and vigor indices had no significant differences; ultra-dried seeds had a stronger anti-aging ability than those with natural drying, and the best MC for the storage was 43 g/kg. Therefore, it was feasible to store L. bicolor seeds with ultra-dried moisture content.

关键词： ultra-drying germination percentage vigor index relative conductivity enzyme activity Lespedeza bicolor

Effect of Moisture Content on Melilotus suaveolens Seed Quality During ultra-drying Storage

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Journal of Northeast Agricultural University(English Edition) 2011年第1期18卷 33-38页

作者： LIU Yan LIU Guangquan LI Qingmei DUAN Xinfang HOU Longyu Intemational Research and Training Center on Erosion ＆ Sedimentation Beijing 100048 China China Institute of Water Resources and Hydropower Research Beijing 100048 China Northwest Agriculture and Forestry University Yangling 712100 Shanxi China Research Institute of Forestry Chinese Academy of Forestry Beijing 100091 China Institute of New Forestry Technology Chinese Academy of Forestry Beijing 100091 China

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 *** 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）,*** 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 *** 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 ***,ultra-dry seeds with 42 g·kg-1 of MC showed higher DA and AA,and lower RC than non-ultra-drying ***,ultra-drying to 42 g·kg-1 of MC was helpful for *** seed storage.

关键词： ultra-drying germination percentage dehydrogenase activity a-amylase activity M. suaveolens seed storage