Evaluation of seed quality and seed coat of Isatis indigotica Fort.
Objective In order to improve the germination rate and utilization rate of Isatis indigotica Fort.seeds,the quality difference of Isatis indigotica Fort.seeds with different colors was analyzed and a seed coating agent suitable for Isatis indigotica Fort.seeds was screened.Methods Observation and determination of the external form of 6 Isatis indigotica Fort.producing seeds and clarity,according to the color classification investigation on sale,Yuncheng and folk music origin seeds to take off water con-tent,thousand seed weight,germination potential,germination rate,germination index and other indicators,and uses the 5 kinds of seed germination experiment indicated that composite coating,the indexes of germination and biomass.The quality standard of color grading of Isatis indigotica Fort.seed was determined,and a seed coating agent suitable for Isatis indigotica Fort.seed coat-ing was screened.Results Isatis indigotica Fort.seeds were divided into three colors:yellow,black and yellow,and purplish-black.The quality indexes were purplish-black group,black and yellow group,and yellow group in turn.The seed germination percentage and root biomass,such as root length,root diameter,plant height and root to shoot ratio,were higher in T2 concentra-tion of D seed coating agent than in control Conclusion Isatis indigotica Fort.seeds can be divided into three colors:yellow,black and yellow and purple and black,and purple and black Isatis indigotica Fort.seeds are the best.D coating agent T2 gradi-ent treatment of Isatis indigotica Fort.seeds had the best effect.
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