Vegetative propagation of Platanus acerifolia Ait: (II) effect of zinc,boron, and indolbutiric acid on rooting of cuttings

Ciência Rural

Nicoloso, Fernando Teixeira²  Fortunato, Roni Paulo³  Lazzari, Marcondes¹ 

[1] Universidade Federal de Santa Maria, Santa Maria;Universidade Federal de Santa Maria

关键词: cuttings;    Platanus acerifolia;    type of cuttings;    boron;    zinc indolburic acid;    rooting;   

DOI  :  10.1590/S0103-84781999000300018

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The aim of this work was to evaluate the effects of zinc (Zn), boron (B), and indolbutiric acid (IBA) on rooting of Platanus acerifolia Ait. cuttings. The treatments of the cuttings, which were collected at four different times during the year and representing four physiological types of cuttings, were: zinc sulphate and chloride (0, 2,5, 5, 10, 20, and 40mg l-1 Zn), boric acid (0, 50, 100, 150, 200, and 250mg l-1 H3BO3), and indolbutiric acid (0, 20, and 40mg l-1 IBA). The treatments with B, Zn and IBA were done through submersion of 3cm of the cutting basis, during 24 hours, in an aqueous solution. The cuttings were rooted in pots containing as substrate a mixture of medium sand + carbonised rice husk, 1:1 v/v, both washed. The experiment was conducted during 110 days under intermittent artificial mist conditions. The evaluated parameters were: length and number of primary adventitious roots, dry weight of adventitious roots, and percentage of rooting. The results show that Zn and B have no influence on the rooting, and the addition of IBA on thin basal semi-herbaceous cuttings reduces the percentage of rooting and increase the number of roots.

【 授权许可】

CC BY-NC