Pot marigold is a valuable medicinal plant with great decorative value. Three combinations of light (white (W)—170 μmol m⁻² s⁻¹, white + blue (W+B)—230 μmol m⁻² s⁻¹, white + red (W+R)—230 μmol m⁻² s⁻¹) were used to analyse the influence of a diversified light spectrum on the morphological traits and flowering of Calendula officinalis L. “Radio”. The effect of foliar treatment of the plants with 6-benzyladenine (BA) at concentrations of 100, 150 and 200 mg dm⁻³ at all the light spectrum combinations was analysed. BA had negative influence on the earliness of florescence and delayed it even by more than 10 days. W+B light intensified the delay, whereas red light partly reduced it. The BA treatment had the greatest influence on the biometric traits of the plants at the initial period of their development. W+B light significantly inhibited the growth of the plants. A high share of red light in the spectrum positively affected the Fv/Fm value, the relative chlorophyll content and the percentage of dry matter in the plants. When the amount of blue or red light in the spectrum increased, it was possible to obtain specific biometric traits of Calendula without the BA treatment.

中文翻译：

---

金盏花“射电”对苯并亚麻素和不同光谱的叶面形态响应

万寿菊是一种有价值的药用植物，具有很高的装饰价值。光（白色（W）-170微摩尔米的三种组合^-2小号^-1，白+蓝（W + B）-230微摩尔米^-2小号^-1，白+红色（W + R）-230微摩尔米^{- 2} s ^-1）用于分析多样化光谱对金盏菊“射电”的形态特征和开花的影响。用浓度为100、150和200 mg dm ^-3的6-苄基腺嘌呤（BA）对植物进行叶面处理的效果分析了所有的光谱组合。BA对花期的早期产生负面影响，甚至延迟了10天以上。W + B灯加剧了延迟，而红灯则部分降低了延迟。在植物生长的初期，BA处理对植物的生物特征有最大的影响。W + B光显着抑制了植物的生长。光谱中大量的红光对Fv / Fm值，相对叶绿素含量和植物中干物质的百分比产生积极影响。当光谱中的蓝光或红光量增加时，无需进行BA处理即可获得金盏花的特定生物特征。