亚热带地区人工诱导难开花重要甘蔗亲本开花研究

Studies on Inducting Flowering of Some Shy-Flowering and Important Sugarcane Parents Under Controlled EnvironmentalConditions in Subtropical Region

纬度和品种是影响甘蔗开花中比较重要的因素，拔地拉、黑车里本、闽糖７０－６１１、粤糖５７－４２３等难开花的重要亲本人工诱导开花的研究，已列入国家“九五”科技攻关内容。本研究采用固定日长加蓝光与远红光作辅助光照；处署盆栽，次年清明开始诱导；小阳秋杂交温室加遮阳网和午间喷雾等措施，使上述亲本在亚热带的福建省漳州（北纬２４°３０′、东经１１７°３９′）诱导孕穗开花成功，其中拔地拉和黑车里本是首次诱导开花。本研究还利用上述亲本配制了１５个杂交组合。

Latitude and varieties are the important factors of affecting florescence in sugarcane. The induced flowering of some shy-flowering and important sugarcane parents,Badila,Black Cheribon, Mintang 70-611 and Yuetang 57-423 etc,have been listed in the content of tackling key scientific and technical problems in the Ninth state Five-Year Plan. By means of giving regular-hours Photoperiod supplemented with blue and far-red lights daily,breeding seedlings in the limit of Heat, begining to induce the florescence in the Pure Brightness next year,and adding sunshading net and keeping a suitable humidity in the greenhouse in Autumn ,parents mentioned above had been induced to flower successfully in Zhangzhou ,Fujian province(24°30′N,117°39′E).of the parents,Badila and Black cheribon were induced to bloom for 1st time. Also, 15 crosses were made using above mentioned parents.