Breeding of a New Sugarcane Cultivar Yunzhe 102768 with High Yield and Stress Tolerance
[Objective]In view of the problems that need to be solved in the sugarcane production,new sugarcane varieties with high yield,high sugar,drought tolerance and disease resistance were selected to provide important support for the sustainable development of sugarcane industry.[Methods]Using'Xintaitang26'as the female parent and'Xintaitang11'as the male parent,sugarcane sexual hybridization was carried out.The sugarcane breeding program of'Five Stage Selection'was adopted,and after screening at all levels of nurseries and evaluation analysis in regional trials,an excellent new sugarcane variety'Yunzhe 102768'was developed.[Results]'Yunzhe 102768'is mid to late maturing,high yield,high sugar,medium-large stalk,good defoliation,strong drought tolerance,high resistance to smut,and medium resistance to streaks mosaic disease and resistance to sorghum mosaic disease.In the 15th regional trial of new sugarcane varieties in Yunnan Province,the average sugarcane yield was 122.17 t/hm2,that was 13.3%greater than the control'Xintaitang22'(the same below);The average sucrose content of the whole maturing period(November to the following March)was 14.70%,which was similar to the control;the average sugar yield was 16.26 t/hm2,increased by 12.4%as compared with the control.[Conclusion]This variety was registered by the Ministry of Agriculture and Rural Affairs of the People's Republic of China as a non-major crop variety in 2022[registration number:GPD sugarcane(2022)530004].It is suitable for planting in paddy fields,sloping fields and terraces with irrigation in the sugarcane areas with at least moderate soil fertility in Lincang,Dehong,Baoshan,Honghe and etc.in Yunnan Province.
new sugarcane cultivarYunzhe 102768stress tolerancebreeding
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