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《Journal of Northwest Sci-Tech University of Agriculture and Forestry(Natural Science Edition)》 2006-04
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Study on material accumulating in maturity process of Isatis indigotica Fort.seeds and vigor comparison among seeds of different harvest times

YE Qing~a,DONG Juan-e~b,LI Xiao-ping~c,LIANG Zong-suo~a(a College of Life Sciences,b College of Forestry,c Research Centre of Soil and Water Conservation & Eco-environment,Northwest A & F University,Yangling,Shaanxi 712100,China)  
Isatis indigotica Fort.seeds were sampled at fixed period after seeding.At each stage,the thousand seed weight was recorded,the content of protein,amylum,reducing sugar and soluble sugar of seed was assayed.To study the relationship between different harvest times and seed vigor by the seed germination,assaying percent of germination,percentage of germination power,germination index and simple vigor index.The results show that the rapid accumulation stages of store material emerge during the last tendays percentage of April and the first ten days of May,the thousand seed weight reached the maximum value 7.410 g during the last tendays of May.The content of reducing sugar and soluble sugar increased progressively from April 11 to April 20,reached the maximum value 17.30 g/kg and 54.00 g/kg in April 19,then reduced rapidly after April 19,the content of amylum increased at the same term.The content of soluble protein increased in April,then reduced rapidly earlier and slowly later after May 5,which reached the maximum value 32.34 g/kg in May 5.The content of crude protein increased slowly in May.The seed vigor are significantly different among seeds of Isatis indigotica Fort.of different harvest times.The best harvest time is the end of May and the beginning of June.
【Fund】: 陕西省“十五”科技攻关项目(2001K10-G15-03);; 麦迪森科研基金项目(MDS-01)
【CateGory Index】: S567.239
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