甘蔗开花诱导研究续报

本文研究了处理时间、株龄、日长递减率、光照和夜温对一些难开花和不开花亲本（Ｂａｄｉｌａ、粤糖５７／４２３、粤糖５９／６５、Ｃｏ４１９、华南５６／１２和华南５６／２１）的抽穗率和抽穗期的影响。结果表明：（１）提前处理对粤糖５９／６５有负作用；（２）较慢的日长递减率（１５秒／天）可提高粤糖５７／４２３、粤糖５９／６５和Ｂａｄｉｌａ的抽穗率；（３）充足的自然光照可提高所有参试６个品种的抽穗率；（４）在暗期初始阶段，过高的夜温可能会对整个暗期产生非常有害的影响。

Further Studies on Induction of Sugarcane Flowering

In this paper,the effect of treatment time, plant age, decline rate in daylength, natural light and night temperature on the percentage and dates of emergence, was studied.Six non-and shy-flowering varieties (Badila, Yuetang 57/423, Yuetang59/65, Huanan 56/12,Huanan56/21 and Co419)were used. The results indicated that earlier treatment (in winter and spring seasons)of older stalks of Yuetang 57/423 could increase emergence percentage and advance its flowering time; earner treatment of younger but vigorous stalks of Badila could advance its flowering time; earlier treatment had negative effect on Yuetang 59/65; slower decline rate in daylength (15 seconds/day ) could increase emergence percentage of Yueatang 59/423 and Badila; for all 6 tested varieties; stalks exposed to more natural light in daytime had higher emergence percentage; excessively high night temperature at the beginning of dark period might have very harmful influence on the whole dark period.