The best plant growth regulator to increase seedling drought-resistance was PP333+6-BA, 6-BA was better for Acer mono Maxim, and Cotinus Coggyia (Royal purple).

 
  • 6-BA、PP333+6-BA、CCC+6-BA组合处理提高了植物叶片的IAA含量及IAA/ABA值,内源IAA含量的提高及IAA/ABA值的提高有助于保持叶片气孔的开度、维持较高的光合作用,在干旱症状较轻时利于抗旱;
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