Improving morpho-physiological characteristics and extending vase life of Lily (Lilium LA Hybrid) cv. Original Love using gibberellic acid and humic acid

Flower and Ornamental Plants Pub Date : 2021-12-01 DOI:10.52547/flowerjournal.6.1.49

Hengameh Jamali Moghadam, Moazzam Hassanpour Asil

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Abstract

Lily is one of the most important cut flowers, which is also widely used as a potted flower. In order to study the effects of gibberellic acid and humic acid on growth, flowering and vase life of Lilium LA Hybrid ‘Original Love’, an experiment was conducted as factorial in a completely randomized design with 2 factors, 16 treatments and 3 replications. The first factor was gibberellic acid at 0, 150, 300 and 450 mg L -1 which was carried out by immersing bulbs gibberellic acid for 24 hours. The second factor was humic acid, at 0, 200, 400 and 600 mg L -1 as foliar application at the beginning of sprouting every two weeks. The results showed that the effect of gibberellic acid treatment on bud number and flowering stem height was significantly different from control. The highest bud number (5.04) and flowering stem height (79.08 cm) were obtained by treating gibberellic acid at 450 and 300 mg L -1 , respectively. Gibberellic acid and humic acid treatments effects separately showed significant differences on fresh weight of cut flower, total soluble solids and percentage of cell membrane stability index. Also, the interaction effect of gibberellic acid and humic acid treatments caused a significant increase in chlorophyll index (67.70 spad value), vase life (13.66 day), total chlorophyll (0.370 mg g -1 FW), chlorophyll a (0.266 mg g -1 FW), chlorophyll b (0.103 mg g -1 FW) and petal carotenoids (0.026 mg g -1 FW). The highest relative fresh weight was related to the interaction of gibberellic acid at 450 mg L -1 and humic acid at 400 mg L -1 , with 113.47 and 103.75% increase on third, and fifth days, respectively. Also, the highest relative fresh weight at seventh day was observed in the treatment of gibberellic acid 450 mg L -1 and humic acid 600 mg L -1 with an average of 97.01%. Also, the highest water uptake was related to the interaction of gibberellic acid at 300 mg L -1 and humic acid at 600 mg L -1 , with 1.99, 1.81-, and 1.48-ml g -1 FW at third, fifth and seventh days, respectively. In general, gibberellic acid 450 mg L -1 and humic acid 400 mg L -1 were the best treatments to improve the growth, flowering and vase life features of lily.

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改善百合(Lilium LA Hybrid)形态生理特性及延长花瓶寿命。原来爱用赤霉素酸和腐植酸

百合是最重要的切花之一，也被广泛用作盆花。采用2因素、16个处理、3个重复的全随机试验设计，研究了赤霉素酸和腐植酸对LA百合杂交品种‘原爱’生长、开花和花瓶寿命的影响。第一个影响因素是0、150、300和450 mg L -1的赤霉素酸，通过浸泡球茎赤霉素酸24小时来进行。第二个因子是腐植酸，每两周在发芽初期叶面施用0、200、400和600 mg L -1。结果表明，赤霉素酸处理对芽数和花茎高的影响与对照有显著差异。450 mg L -1和300 mg L -1处理的芽数和花高分别为5.04和79.08 cm。赤霉素和腐植酸处理对切花鲜重、可溶性固形物总量和细胞膜稳定性指数的影响均有显著差异。赤霉素和腐殖酸处理的交互作用显著提高了叶片叶绿素指数(67.70 mg g -1 FW)、花瓶寿命(13.66 d)、总叶绿素(0.370 mg g -1 FW)、叶绿素a (0.266 mg g -1 FW)、叶绿素b (0.103 mg g -1 FW)和花瓣类胡萝卜素(0.026 mg g -1 FW)。相对鲜重与赤霉素酸450 mg L -1和腐植酸400 mg L -1的交互作用有关，第3天和第5天分别增加了113.47%和103.75%。赤霉素酸450 mg L -1和腐植酸600 mg L -1处理的第7天相对鲜重最高，平均为97.01%。赤霉素酸300 mg L -1和腐植酸600 mg L -1分别在第3、5和7 d与1.99、1.81和1.48 ml g -1 FW的相互作用有关。总的来说，赤霉素酸450 mg L -1和腐植酸400 mg L -1是改善百合生长、开花和花瓶期特性的最佳处理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Flower and Ornamental Plants

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