生长基质和激素对麻楝嫩枝扦插生根的影响

doi:10.7525/j.issn.1673-5102.2019.03.008

摘要/Abstract

摘要： 以麻楝当年生嫩枝为试验材料，开展了扦插基质，激素种类、浓度和处理时间对麻楝嫩枝扦插生根影响的研究。基质试验采用泥炭土、黄心土、河沙、蛭石为扦插基质，完全随机区组试验设计；激素试验采用激素种类（NAA、IBA、ABT1）、浓度（500、1 000、1 500 mg·L^-1）及处理时间（10 s、1 min、30 min）3因素3水平正交（L₉（3³））试验设计。结果表明：（1）泥炭土+蛭石（1：1，体积比）为最佳组合基质，其生根率达81.81%，平均生根数量为20.33条，平均根长为4.80 cm，根系效果指数达3.05；（2）激素种类对麻楝嫩枝扦插生根效果影响最大，激素浓度次之，处理时间影响最小。扦插时，采用泥炭土+蛭石（1：1）混合基质、1 000 mg·L^-1浓度的ABT1号生根粉溶液、浸泡插穗10 s的生根效果最佳。

关键词: 麻楝, 嫩枝扦插, 基质, 激素, 正交设计

Abstract: We studiedthe effects of substrate, hormonetype, concentration and treating time on cutting rooting of Chukrasia tabularis with young shoots as test materials. The substrate treatments include peat soil, yellowsoil, river sand and vermiculite, adopting with a randomized complete block design. The hormone treatments adopted L₉(3³)orthogonal design with different hormone kinds(NAA, IBA and ABT), concentrations(500, 1 000 and 1 500 mg·L^-1), and treating time(10 s, 1 min and 30 min). The results showed that:(1)The mixed substrate of peat soil+vermiculite(1:1, volume ratio) was the best, with the rooting rate of 81.81%, mean rooting number of 20.33 per plant, the average root length of 4.80 cm, and the root effective index of 3.05; (2)The hormone kinds had the greatest influence on cutting effectiveness of C.tabularis young shoots among the three main factors, followed by hormone concentrations, and the treating time had the least influence. In cutting, under the mixed substrate of peat soil+vermiculite(1:1), treated ewith ABT1 of 1 000 mg·L^-1 for 10 s, the rooting effective was the best.

Key words: Chukrasia tabularis, young shoot cutting, substrate, hormone, orthogonaldesign

中图分类号:

S792.33

张捷, 王青, 仲崇禄, 张勇, 魏永成, 孟景祥. 生长基质和激素对麻楝嫩枝扦插生根的影响[J]. 植物研究, 2019, 39(3): 380-386.

ZHANG Jie, WANG Qing, ZHONG Chong-Lu, ZHANG Yong, WEI Yong-Cheng, MENG Jing-Xiang. Effects of Growth Substrate and Hormones on Cutting Rooting of Chukrasia tabularis Young Shoots[J]. Bulletin of Botanical Research, 2019, 39(3): 380-386.

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