【2h】

Rooting of carnation cuttings

机译:康乃馨插条生根

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摘要

The rooting of stem cuttings is a common vegetative propagation practice in many ornamental species. Among other signals, auxin polarly transported through the stem plays a key role in the formation and growth of adventitious roots. Unlike in other plant species, auxin from mature leaves plays a decisive role in the rooting of carnation (Dianthus caryophyllus. L) cuttings. The gene DcAUX1, which codifies an auxin influx carrier involved in polar auxin transport, has now been cloned and characterized in carnation. The expression pattern of this gene was seen to depend on the organ, the cultivar and the time of cold storage. The variations observed in its expression could be related with the rooting ability of different carnation cultivars.
机译:在许多观赏物种中,cutting插的生根是一种常见的无性繁殖方法。在其他信号中,通过茎杆极性转运的生长素在不定根的形成和生长中起关键作用。与其他植物不同,成熟叶片中的生长素在香石竹(Dianthus caryophyllus.L)插穗生根中起决定性作用。 DcAUX1基因编码了涉及极性植物生长素运输的植物生长素流入载体,现已被克隆并在康乃馨中表征。可见该基因的表达模式取决于器官,品种和冷藏时间。其表达中观察到的变化可能与不同康乃馨品种的生根能力有关。

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