Effects of Different Cultivation Substrates on the Growth of Cattleya Tissue Culture Seedlings
SHI Xiaofen
Abstract：The experiment employed a randomized block design with tissue-cultured seedlings derived from two Catalpa bignonioides clones as the research subjects,which aims to investigate the effects of different substrates on early transplanting growth of Catalpa tissue-cultured seedlings.The experiment set up four treatments,including ransplanting the Cattlan clonal FX53-2 with substrate A(fir wood chips:volcanic stone=5:1)(T1),transplanting the Cattlan clonal FX53-2 with substrate B(white Sphagnum moss)(T2),transplanting the Cattlan clonal FX46 with substrate A(fir wood chips:volcanic stone=5:1)(T3),transplanting the Cattlan clonal FX53-2 with substrate B(white Sphagnum moss)(T4),measurement of transplanting survival rate,plant height,root length,chlorophyll content and root activity.Results indicated that:(1)Treatment T3 achieved the highest survival rate,T4 exhibited the fastest shoot growth,and T1 developed the longest roots;(2)For FX53-2,substrate type significantly affected chlorophyll a(P<0.01),chlorophyll b(P<0.05),and total chlorophyll(P<0.01),but not root activity;(3)For FX46,only chlorophyll a was significantly influenced(P<0.05);(4)FX46 demonstrated superior performance in all chlorophyll parameters and root activity compared to FX53-2.In conclusion,under the experimental conditions,Catalpa clone FX46 performed better than FX53-2,and substrate B(white sphagnum moss)was superior to substrate A(fir wood chips:volcanic stone=5:1).
Keywords：Cattleyasubstrate cultivationeffects of growthchlorophyll contentroot activity
Publication Date：2025-12-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 41-45 )