Abstract:

Ranunculus asiaticus L. has high ornamental and economic value, and its introduction and cultivation are of great significance to enrich the flower species in the Chongming District of Shanghai. In order to explore the planting performance of new cultivars of Ranunculus asiaticus L. in Venlo greenhouse in the Chongming District of Shanghai City, Ranunculus asiaticus L. was used as the material at the flower germplasm protection base in Chongming District, Shanghai City. Potted cultivation was adopted, and 6 cultivars in 3 series were screened: A, elegant series (BIANCO59-99); B, elegant series (CREAM43-99); C, elegant series (ROSA CHIARO 2P1O); D, success series (LAMBADA); E, success series (GRAND PASTEL); F, butterfly series (IGLOO). The results showed that there were significant differences in the growth indicators among the cultivars. Cultivar B had the highest germination rate and seedling rate, reaching 99.15% and 98.55%, respectively. In terms of plant height and stem diameter, cultivar C had the highest plant height, which was significantly different from other cultivars; cultivar A had the thickest stem, reaching 3.68 mm, which was significantly different from cultivars B, E, and F. In addition, there were certain differences in the number of flowers per plant and the number of harvested bulbs among the cultivars. At 150 days after planting, cultivar D had the highest average number of flowers per plant, reaching 1.08; cultivar C had the most harvested bulbs, and cultivar B had the highest proportion of large bulbs. In comprehensive comparison, cultivars B and C performed better, with stronger adaptability and higher yield, and are suitable for promotion in Chongming District. This experiment can provide theoretical guidance for the development of the cut flower and potted flower industries in Chongming District.

Key words: Ranunculus asiaticus L., screen, cultivation, plant height