Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (4): 655-660.DOI: 10.3969/j.issn.1000-2561.2020.04.004

• Crop Culture and Nutrition, Genetic Breeding • Previous Articles     Next Articles

Transplantation Effects of Different Nursery Substrates on the Growth of Tissue Culture Seedlings of Mytilaria laosensis

LIU Zhenxiang,LI Rongsheng,ZOU Wentao,QIU Zhenfei,YU Niu,YANG Jinchang()   

  1. Research Institute of Tropical Forestry, Chinese Academy of Forestry / Key Laboratory of State Forestry Administration on Tropical Forestry Research, Guangzhou, Guangdong 510520, China
  • Received:2019-07-08 Revised:2019-09-04 Online:2020-04-25 Published:2020-05-09
  • Contact: YANG Jinchang


The effect of different nursery substrates on the transplant survival rate, growth indicator and seedling quality index of M. laosensis tissue culture seedlings was investigated by setting five different nursery substrates according to the volume ratio of two nursery substrates (yellow soil and peat soil). T1 (100% yellow soil) and T3 (60% yellow soil+40% peat soil) were more conducive to the survival of M. laosensis seedlings after transplantation, and the survival rate of the seedlings transplanted for 1 month was the highest (83.33% for T1, and 81.11% for T3). Plant height, leaf number and ground diameter of M. laosensis seedlings increased first and then decreased with the increase of the proportion of peat soil, and reached the maximum at T3. The three indicators of the seedlings transplanted after 6 months for T3 were 30.93 cm, 8.1 and 5.04 mm, respectively, which were significantly higher than those of the other four treatments (P<0.01). The aboveground and underground dry weight of M. laosensis seedlings transplanted after 6 months were T3 > T4 > T5 > T2 > T1, and the aboveground and underground dry weight for T3 were 8.51 and 5.56 times of those of T1. Furthermore, the seedling quality index of T3 reached 1.13, which was significantly higher than that of T5, T2 and T1 (P<0.05). Therefore, the mixture nursery substrates with 60% yellow soil and 40% peat soil were the ideal nursery substrates for tissue culture seedlings of M. laosensis.

Key words: Mytilaria laosensis, tissue culture seedlings, nursery substrates, effect of transplantation, seedling quality index

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