不同浓度NAA 溶液对嫁接黄瓜苗期形态及生理指标的影响

以黄瓜断根嫁接苗为材料，对接穗蘸取5 种浓度的萘乙酸（NAA）溶液进行处理，通过测定
嫁接成活率、苗期形态指标、壮苗指标及根系活力等生理指标，研究了5 种浓度NAA 对断根嫁接苗苗期
质量的影响。试验结果表明：NAA 的使用提高了嫁接成活率，NAA 浓度为40 mg·L^-1 时嫁接成活率最高，
为94%；在0～50 mg·L^-1 浓度范围内，随着NAA 使用浓度的增加，嫁接苗质量先上升后降低，当浓度
达到40 mg·L-1 时，其各项形态及生理指标表现突出；40 mg·L^-1 NAA 能有效促进黄瓜嫁接苗的生长，
提高嫁接苗质量。

Effects of Different Concentration Naphthalene Acetic Acid on Morphological and Physiological Indices of Grafting Cucumber Seedlings

Root-cut-grafting seedlings of cucumber（Cucumis sativus L.）were used as material，
the scions were treated with 5 concentrations of NAA solution. Through measuring seedlings indexes，
namelysurvival rate，morphological parameter，vigor indexes，root activities etc，the effects of 5
NAA concentrations on the quality of root-cut-grafting seedlings were studied．The results showed that
the survival rate of grafting had been raised by NAA treatment，it could reach up to 94% for 40 mg·L-1
NAA concentration．The quality of seedlings increased at first and then decreased with increasing
concentration of NAA solution during a certain range of 0-50 mg·L^-1 concentration．When the
concentration reached 40 mg·L^-1，all kinds of morphological and physiological indices had the best
performance．In conclusion，40 mg·L^-1 NAA treatment could effectively promote the growth of
cucumber root-cut-grafting seedlings and improve their quality.