Abstract:

Abstract: For providing technical director for large area demonstration and popularization of Mingtang92-505，we studied on character of Mingtang 92-505 during the contrasting test to prepare regional trial and regional trial of new sugarcane variety in Fujian province and national， The investigative results were as follows: The germination was 74.66%, increase by 2.07% in comparison with the variety of Mingtang70-611. The tilling rate was 109.06%, plant height was 296cm, stalk diameter was 2.560cm, millable stalks was 84055stalk/hm2,mean cane yield was 118.424 t/hm2, sucrose content was 15.05 during the period of Nov. to Feb, sugar yield was 17.887t/hm2, increased by 33.51%, decreased by 12cm, 0.013cm, increased by 18339 stalk/hm2, 24.30%, 0.87% and 32.20% in comparison with Mingtang 70-611, respectively. Mingtang 92-505 had characters of early maturity ,high and stable in cane yield, wide adaptability, middle resistance to mosaic and drought、resistance to smut. The analysis of hereditary compose in Mingtang92-505 showed that it was abundant in hereditary , which content 13 different basic germplasm.