再生植株根系发达，叶片具三叶特征。
The regenerated plants were trifoliate with well developed root systems.
其主要的生物学特性是：（1）根系发达。
The biological properties were as follows: (1) Well developed roots.
甜椒穴盘苗壮苗应具备干物质含量高，根系发达，株高适宜等特点。
Sweet pepper seedling should have such feature as high dry matter content, large root system and proper shoot height.
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