缩短 Kalanchoe pinnata Pers. 的幼年期以促进开花

Shortening the juvenile phase for flowering in Kalanchoe pinnata Pers.

机构信息

Department of Botany, University of Delhi, Delhi 7, India.

出版信息

Planta. 1967 Mar;73(1):28-36. doi: 10.1007/BF00419838.

DOI:10.1007/BF00419838

Abstract

Plants of Kalanchoe pinnata flower normally at the end of 2 years. Flowering in the juvenile phase (3- and 9-month-old plants) has been induced by application of gibberellin (GA) either to the shoot tip and the youngest pair of leaves, or to the third leaf. Three-month-old plants required more exogenous GA (50 μg/plant) than 9-month-old plants (5 μg/plant). The simultaneous application of the growth retardant (2-chloroethyl)trimethylammonium chloride=CCC via the roots did not interfere with GA-induced flowering but overcame the inhibitory effects produced by a high concentration of GA (150 μg/plant) when applied alone.

摘要

Kalanchoe pinnata 植株通常在 2 年后开花。在幼年期（3 个月和 9 个月大的植株），通过向茎尖和最年轻的一对叶片，或者向第三片叶片施加赤霉素（GA），可以诱导开花。3 个月大的植株比 9 个月大的植株需要更多的外源 GA（50μg/株）。通过根部同时施加生长抑制剂（2-氯乙基）三甲基氯化铵=CCC，不会干扰 GA 诱导的开花，但可以克服单独施加高浓度 GA（150μg/株）时产生的抑制作用。