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甜菜是二年生作物。在自然条件下于第二年生育期间完成生殖过程(开花、结实),这一特性是限制其通过育种过程加速改良的一个重要障碍。然而,在人工控制条件下,通过早成花诱导和种子成熟也许能加速育种进程,促使甜菜的改良。本文作者在特殊生长室内,控制植株苗令(苗令三十天后)或不控制,采用14/10小时、22/24℃的光暗——温度制,对甜菜不同品种进行了早成花诱导。结果表明所有供试试品种都表现出早生殖反应,但不同品种对诱导的反应是有差异的。“Fc701/5”品种在播后31和41天的诱导频率分别为55％和100％;一年生品种分别为36％和
Beets are biennial crops. Reproductive processes (flowering, fruiting) completed during the second year of reproduction under natural conditions are a major obstacle limiting their speedy improvement through the breeding process. However, under artificial conditions, induction of early maturity and seed maturation may accelerate the breeding process and promote the improvement of beet. The authors conducted early flower induction of different varieties of sugar beet in a special growth chamber by controlling the seedling number of plants (after thirty days of seedling application) or without control using a light-dark-temperature system of 14/10 hours at 22/24 ° C . The results showed that all the tested cultivars showed early reproductive responses, but different cultivars showed different responses to the induction. The induction frequencies of “Fc701 / 5” varieties were 55% and 100% respectively at 31 and 41 days after sowing; the annual varieties were 36% and