【摘要】 运用 冬性有极 显著差异 的２ 个甘 蓝材料（７２２４９ 、旅１４１５４ ２４） ，对低温 诱导花 芽分化的温度、诱 导的起 始苗龄、诱 导持续 的时 间 及诱 导 后花 芽生 长 的温 度及 时 间进 行了 比 较试 验。 提出以７ ～８ 叶苗龄、５ ℃低温诱 导５０ ｄ ，光周 期１２ ｈ ，而 后转 入昼 温／ 夜 温＝ ２５ ～３０ ℃／１５ ～２０ ℃，１５ ｄ ，测定花 芽分化级 数，计算 花芽分化 指数，以 此对甘蓝 进行冬 性鉴 定。运 用此 方法 ，对 ２ 份 自交 系、８份春早 熟组合 进行了冬 性鉴定。更多还原

【Abstract】 In the trial of testing standards and methods for cabbage winterness characteristics,the temperature of flower bud differentiation,the age of seedling,duration,temperature and duration after induction were tested.The experiment demonstrated that it was a proper method,in which cabbage seedlings with 7 8 leaves were treated at 5℃for 50 days,with 12 hours lighting per day,before transferred the treatment at 25 30℃(day)and 15 20℃(night)for 15 days.The grades of flower bud differentiation were investigated,and calculated the flower bud differentiation index.The winterness for 2 inbred lines 8 spring early mature combinations were evaluated in this method.更多还原