甘蔗新品种‘桂辐98-296’的丰产性、稳定性、适应性及抗性分析

The Yielding Ability,Stability,Compatibility and Resistance Analysis of ‘Guifu 98-296'

分析甘蔗新品种‘桂辐98-296’在不同生态条件蔗区表现情况,了解其生产利用和育种价值。以国家甘蔗品种第6轮区域试验的结果为依据,通过产量(蔗茎产量与蔗糖产量)、变异系数和回归系数对该品种和对照品种的丰产性、稳产性、适应性和抗逆进行分析比较。结果表明:‘桂辐98-296’产蔗量为115.56t/hm2、产糖量17.12t/hm2,分别位居所有参试品种的第二名和第一名,与对照差异达极显著水平;产量主效应值大,蔗茎产量、蔗糖产量效应值分别为8.95和1.34,在所参试品种中产蔗量产糖量分别位居第二位和第一位;蔗茎产量、蔗糖产量变异系数分别为12.03和11.53,在所参试品种中分别位居第八位和第九位;蔗茎产量、蔗糖产量回归系数分别为0.98和1.00;黑穗病人工接种株发病率为7.69%,属抗性2级;花叶病人工接种株发病率为0,属抗性1级;干旱胁迫条件下平均株高伤害率为17.91%。‘桂辐98-296’属于丰产型高糖品种,适应性强,稳产性一般;高抗甘蔗花叶病,抗甘蔗黑穗病,具有较强的抗旱能力。特别适于中等或以下肥力的旱坡地种植。

The performances of new sugarcane variety ‘ Guifu 98-296 ＇ were analyzed to understand the values in use and breeding.The variety＇s yielding ability,stability,compatibility and the resistance were compared by analyzing the output （sugar cane stem output and sucrose output）,the coefficient of variation and the regression coefficient;According to the sixth cultivate results of new sugarcane variety regional test in China.The stem yield and sucrose yield of ‘Guifu 98-296 ＇ were 115.56 t/hm 2 and 17.12 t/hm 2 respectively,is situated second and first separately in all tested varieties,reaches the remarkable level difference with the control,The effect value of stem yield and sucrose yield were 8.95 and 1.34 respectively,and also situated second and first separately in all tested varieties;the coefficient of variation of stem yield and sucrose yield were 12.03 and 11.53 respectively,and also situated eighth and ninth separately in all tested varieties;regression coefficient of stem yield and sucrose yield were 0.98 and 1.00 respectively;The artificial infection incidence rate of smut disease was 7.69%,was the 2 levels resistance;The artificial infection incidence rate of mosaic disease was 0,was the 1 levels resistance;the average injury to plant height rate was 17.91% under the drought condition;Conclusion： sugarcane variety ‘Guifu 98-296 ＇ belongs to higher yield and sucrose content variety,have good compatibility,the production stability is middle;Higher anti-sugarcane mosaic,anti-sugarcane smut,has stronger drought resisting ability.It ＇ s suitable for planting at dry and slopes land with less fertility.