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《Chinese Journal of Grassland》 2015-06
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Breeding of New Cultivar of Sorghum bicolor×Sorghum sudanense cv.Mengnong No.9 with Super-low HCN Content

YU Zhuo;SONG Chang-hai;YU Xiao-xia;SHI Yue;JIANG Chao;FANG Yong-yu;College of Agronomy,Inner Mongolia Agricultural University;  
In order to breed new cultivar of Sorghum-Sudanense with super-low hydrocyanic acid content,the hybrids F1 and self-cross F2 population were obtained from a wide cross between loose spike Sorghum and red shell Sudangrass.Using the method of ISSR molecular marker assisted selection and regular hybrids selection to select good single plant,a new cultivar with super-low hydrocyanic acid content,Mengnong No.9Sorghum-sudanense,was bred after 9successive generations,by four individual selection and one mass selection,variety comparative tests,regional trials,and productive experiments.The cultivar had developed root system,small stem-to-leaf ratio,strong tillers and regeneration vigor,which could be cut for 3times each year.The average plant height was 409.2cm,the growing period was around 138 days,and the stems and leave were green after seed maturing.The fresh yield and seed yield were about148400kg/hm2 and 6000kg/hm2 respectively;the content of CNˉwas 3.11mg/kg,the crude protein content was 15.09% and the crude fiber was 24.8% at the jointing stage,which was rich in crude fat,crude ash,nitrogen-free lixivium and amino acids and it is a new cultivar of Sorghum-Sudanense with broad prospect in application.
【Fund】: 国家“973”计划项目(2014CB138703);; 国家自然科学基金面上项目(31472141)共同资助
【CateGory Index】: S544.9
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