Bài báo khoa học

The study was aimed at determining the most suitable techniques in the nursery for the propagation of Paris vietnamensis (Takht) H. Li by sprouts. The experiments were arranged in a randomized complete block design (RCBD) with three replicates in the nursery in Sa Pa town, Lao Cai province. The results showed that using 2 - 3 sprouts or tubers was the most suitable technique, which resulted in plant height ranging from 33.1 to 35.2 cm/plant, stem diameter ranging from 5.7 to 6.0 mm/plant, leaf length ranging from 11.7 to 12.5 cm/leaf, and leaf width ranging from 6.3 to 6.8 cm/leaf. Treatment with GA3 at 60 ppm and IBA at 60 ppm increased plant height to 45.6 cm, stem diameter to 6.4 mm and at least 5.0 roots per plant. The shading level of 70% is the most optimal; plant height, stem diameter, leaf length, leaf width and the number of roots reach 47.6 cm/plant, 2.3 mm/plant, 13.8 cm/leaf, 6.8 cm/leaf and 5.6 roots/plant, respectively.