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首页> 外文期刊>Acta Horticulturae >Evaluation and application of the long-lasting flower trait (misome-sho) of azalea cultivars.
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Evaluation and application of the long-lasting flower trait (misome-sho) of azalea cultivars.

机译：杜鹃花品种的持久花性状（misome-sho）的评价与应用。

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摘要

The trait of long-lasting flower corolla with temporal change of colour exists in Japanese evergreen azalea. This trait called "misome-sho" has been found in several species and cultivar groups from Edo era. For the purpose of application of this trait for breeding, we investigated several characteristics of these cultivars. Wild species of Rhododendron kaempferi, R. indicum and R. macrosepalum and long-lasting flower cultivars were used in this study. All long-lasting flower cultivars have smaller corolla compared to wild types and have stomata in the corolla surface, while wild types do not have stomata in their surface. Pot planted long-lasting flower cultivars kept their corolla more than 100 days and corolla colour was changed from red or purple-red in anthesis to green later. In contrast, wild type plants in pot finished flowering in about 20 days. Microscopic observation of the longitudinal section of flowers revealed that the abscission layer in the basal portion from wild type corollas is not observed in long-lasting flower cultivars. These cultivars have high pollen fertility and stabilized seed set ability. Inheritance of this trait is investigated using cross progenies. The long-lasting trait of corolla would be derived from the sepaloid nature of petals caused by homeotic gene mutation.
机译：日本常绿杜鹃花具有随时间变化的颜色持久的花冠特征。这种名为“ misome-sho”的性状已经在江户时代的几个物种和品种组中发现。为了将该特性应用于育种，我们研究了这些品种的几个特性。 杜鹃花（Rhododendron kaempferi）， R的野生物种。标记和 R。本研究中使用了大花long和长生花。与野生型相比，所有长寿花品种的花冠都较小，并且在花冠表面具有气孔，而野生型则在其表面没有气孔。盆栽的长生花品种保持其花冠超过100天，花冠的颜色从花期的红色或紫红色变为后来的绿色。相反，盆栽的野生型植物在约20天后开花。花朵的纵切面的显微镜观察表明，在长寿花品种中未观察到野生型花冠基部的脱落层。这些品种具有高的花粉育性和稳定的结实能力。使用杂交后代研究此性状的遗传。花冠的持久性状将源于同源基因突变引起的花瓣的萼片性质。

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