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Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng, Jiangsu 224007, China
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Observation of Coastal Saline Experiment Station of Agriculture Science of Ministry Agriculture, P. R. C. /Jiangsu Institute of Agricultural Sciences in Coastal Areas, Yancheng, Jiangsu 224002, China
To establish an information basis for breeding newhigh-quality, high-yieldcultivars for the agriculture in the coastal area of Jiangsu province, 14 agronomic characteristics and yields of 15 sweet sorghum varieties(lines) were subjected to the grey relativity analysis. The results showed that the agronomic characteristicsmost closely related to theweight of fresh matters were stem juice rate, plant height, growth period, and stem diameter. And, the incidence of head smut disease after vaccination highly correlated to the stem diameter, tiller number, tilt angle, broken stalk percentage, and length of grain ear. Hence, in breeding new varieties of sweet sorghum, the agronomic traits of stem juice rate, plant height, growth period and stem diameter, as well as the head smut vaccination efficacy, should bethe primary criteria forevaluation.
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