Abstract:

In order to get the proper cuttage cultivation scheme of passion fruit, variety ‘Zhuangmi 05’ and ‘Tainong 1’ were used as the scion to observe the formation process of adventitious roots of cuttings from the morphology and anatomical structure, and study the effects of cutting time, air temperature and humidity, rooting agent concentration and branch node position on rooting. The results showed that passion fruit root was formed from latent root primodia. Callus was formed 6-9 days after cutting, white root spots were formed at the base of cuttings from 9-12 days, and adventitious roots grew from 12-15 days. Short time high temperature had little effect on cuttage rooting of passion fruit, and the lower the temperature in the appropriate range, the more conducive to cuttage rooting. The alternate dry and wet environment was conducive to the rooting. ‘Zhuangmi 05’ was suitable for cutting after soaking 300 mg/L rooting powder for 1 h on March 15, and the cuttage rooting effect of the 7^th node was the best. ‘Tainong 1’ was suitable for cutting on March 15 and December 15 without treatment or after soaking 100 mg/L rooting powder for 1 h. The rooting effects of the 5^th to 10^th nodes were better.

Key words: Passiflora edulis, cuttage, rooting, anatomical structure, latent root primodia, air temperature and humidity, rooting agent, branch node position