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《Acta Agrestia Sinica》 2010-02
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Study on the Standard Methods of Germination Testing in Puccinellia distans Seeds

LIAN Jia-jie1,ZHANG Feng1,MAO Pei-sheng1,LU Yong-qiang2(1.Institute of Grassland Science,China Agricultural University,Beijing 100193,China;2 Beijing Animal Husbandry and Veterinary Station,Beijing 100107,China)  
The experiments were designed to provide standard methods of germination testing for Puccinellia distans seeds and determine the suitable germination conditions in alternative temperatures(10-25℃,10-30℃,15-25℃,15-30℃,20-30℃),consistent temperatures(15℃,20℃,25℃,30℃) and pretreatments.The results showed that the highest germination rate of Puccinellia distans seeds was at the condition of alternative temperature 20-30℃ and 8 h light compared with 16 h darkness,some pretreatments including prechill,KNO3 and GA didn′t promote seed dormancy.The first count time was 7th day and the final count time was 14th day based on the seed samples lot2003 and lot2004 tested.In addition,five seed samples were germinated and validated the suitable condition,the results could show the potential of seed germination,and seed dormancy wasn't broken under prechill and KNO3 pretreatments.
【Fund】: 国家科技支撑项目(2006BAD16B01);; 行业性公益项目(nyhyzx07-022);; “948”项目(2007-G38)资助
【CateGory Index】: S54
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