Objective:To study the effects of different light quality on bolting characteristics of Gastro-dia elata f. glauca. Methods:Five different LED light qualities,including red,yellow,green,blue and purple,were used to treat G. elata f. glauca during the bolting phase. A dark treatment served as the control group (CK). The effects of these light treatments on flower stems,flowering,capsules,seeds and seed embryos were measured. The comprehensive evaluation was performed using a multi-objective decision-making method. Results:Yellow light significantly promoted the growth rate of flower stems in G. elata f. glauca,reaching 5.14 cm/d. It also facilitated capsules enlargement,measur-ing 18.38 mm × 7.98 mm. Red light extended the flower wilting period to 10.1 d and increased the num-ber of capsules to 52.50,as well as the weight of individual fruits to 339.07 mg. Green light caused the number of flowers to reach 42.0 and shortened the fruit splitting time to 18.8 d. Blue and purple light significantly enhanced seed length,measuring 875.13 μm and 878.68 μm. Additionally,blue light pro-moted embryos width to 89.46 μm. Yellow,blue,and purple light markedly improved seed viability,resulting in rates of 95.18％,94.88％,and 96.48％,respectively. These light treatments also effectively reduced seed abortion rates to 2.32％,2.18％,and 2.45％. The comprehensive evaluation results indi-cated that the influence of different light qualities on the bolting traits of G. elata f. glauca was ranked as follows:blue light>yellow light>red light>purple light>darkness>green light. Conclusion:Light quality significantly influenced the bolting characteristics of G. elata f. glauca. Blue light was identified as the optimal light quality during the bolting phase of G. elata f. glauca. These findings pro-vided essential theoretical guidance for optimizing the semi-wild cultivation management of G. elata f. glauca.
关键词
乌天麻/光质/抽薹/多目标决策法/种子
Key words
Gastrodia elata f. glauca/Light quality/Bolting/Multi-objective decision-making/Seeds
维普
万方数据