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| Effect of Seedling Age on Adventitious Root Formation at Stem Bases of Solanaceous Vegetables Cuttings |
| ZHANG Xiaorui，DONG Chunjuan，SHANG Qingmao* |
| Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Key Laboratory of Biology and Genetic Improvement of Horticultural Crops，Ministry of Agriculture and Rural Affairs，Beijing 100081，China |
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Abstract Taking tomato variety‘Zhongza 302’，pepper variety‘Zhongjiao No.6’ and eggplant variety‘Yuanza 471’as test material，this experiment cultured the seedlings to 2-leaf stage，3-leaf stage and 4-leaf stage，respectively；cutted the stems at base and inserted them into water．Then the indexes including number of adventitious roots，total root length and rooting area were measured，so as to study the effects of seedling age on adventitious root formation at stem bases of solanaceous vegetables cuttings．The results showed that there were obvious differences in adventitious root formation of tomato，pepper and eggplant cuttings．The formation time，quantity and total length of adventitious roots at stem bases of tomato cutting are better than those of pepper and eggplant．The occurrence time of adventitious roots of tomato and pepper cuttings was not effected by seedling age，but the occurrence of adventitious roots of eggplant cuttings was delayed by seedling age increase．The number of adventitious roots was larger in tomato and eggplant with 3-leaf stage and pepper with 4-leaf stage．The total length of adventitious roots was the longest when tomato in 3-leaf stage，both eggplant and pepper in 2-leaf stage．
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Received: 10 June 2020
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Corresponding Authors:
尚庆茂，研究员，博士生导师，专业方向：蔬菜栽培生理及分子生物学，E-mail：shangqingmao@caas.cn
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