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《Journal of Anhui Agricultural Sciences》 2013-16
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Agronomic Characteristics Analysis on Flue-cured Tobacco Germplasm Resources and 26 Kinds of Main Cultivars

XU Mei-ling et al (Yunnan Academy of Tobacco Agricultural Sciences,Southern China Tobacco Breeding Research Center,Yuxi,Yunnan 653100)  
[Objective] The aim was to provide a scientific basis for parents selection during flue-cured tobacco hybrid breeding and its offspring’s ideal plant type.[Method]The main agronomic characteristics of 506 kinds of flue-cured tobacco germplasm resources and 26 kinds of main cultivars were analyzed and compared.[Result]The results showed the difference among main cultivars was small in all kinds of agronomic traits,and the nature height is 130-150 cm,the topping height is 90-110 cm,the number of harvestable leaves is 18-22,the ratio of length to width of leaf is 1.8-2.5 cm,the internode distance is 4-5 cm,the longitude of stem is 9-11cm,the angle between leaf and stem is medium of 45°-60°;while there are big difference in plant height,the number of leaf,the ratio of length to width of leaf,the angle between leaf and stem and plant type among general flue-cured tobacco germplasm resources,and the nature height is 97-326 cm,the number of harvestable leaves is nonuniform,some cultivars are more than 30 while less than 12 for anothers,the internode distance is 2.6-10.5 cm,the angle between leaf and stem is a little big,there are distributions from 30° and 90°.[Conclusion]Main cultivars have high yield and good quality,strong resistance to disease because of more reasonable arrangement of their plants all morphological characteristics and all kinds of indices,so in the choice of parents and breeding lines,it is necessary to full consider the suitable morphological characteristics to obtain the ideal plant type with high yield,good quality and resistance to disease,and to breed high yield and good quality flue-cured tobacco cultivar.
【Fund】: 中国烟草总公司云南省公司资助项目(2010YN02)
【CateGory Index】: S572
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