Journal of Environmental Biology

Effect of chlormequat (cycocel) on the growth of ornamental

cabbage and kale (Brassica oleracea) cultivars 'Kamome White'

and 'Nagoya Red'

Abdollah Gholampour1, Davood Hashemabadi2*, Shahram Sedaghathoor2 and Behzad Kaviani2

1Department of Horticultural Science, Rasht Branch, Islamic Azad University, Rasht, 4147654919, Iran

2Department of Horticultural Science, Rasht Branch, Islamic Azad University, Rasht, 4147654919, Iran

*Corresponding Author E-mail: alicife@gmail.com

Publication Data

Paper received:

22 June 2013

Revised received:

19 December 2013

Accepted:

31 March 2014

Abstract

The effect of concentration and application method of chlormequat (cycocel), a plant growth retardant, on plant height and some other traits in Brassica oleracea cultivars 'Kamome White' and 'Nagoya Red' was assessed. Plant growth retardants are commonly applied to limit stem elongation and produce a more compact plant. The experiment was done as a factorial in randomized completely blocks design (RCBD) with four replications. Plants (40 days after transplanting) were sprayed and drenched with 500, 1000 and 1500 mg l^-1 cycocel. In each experiment, control untreated plants. Data were recorded the 60 and 90 days after transplanting. Based on analysis of variance (ANOVA), the effect of different treatments and their interaction on all traits was significant at 0.05 or 0.01 level of probability. Treatment of 1500 mg l^-1 cycocel resulted in about 50 and 20% shorter plants than control plants, 60 and 90 days after transplant. The growth of Brassica oleracea cultivar 'Kamome White' and 'Nagoya Red' decreased with increased cycocel concentration. Foliar sprays of cycocel controlled plant height of both cultivars. Results indicated that the shortest plants (9.94 and 11.59 cm) were those sprayed with 1500 mg l^-1 cycocel in cultivar 'Kamome White' after 60 and 90 days, respectively. The largest number of leaves (33.94) and highest leaf diameter (9.39 cm) occurred in cv. 'Nagoya Red', when drench was used. Maximum dry matter (14.31%) accumulated in cv. 'Nagoya Red', treated with spray. ??  

 Key words

Brassicaceae, Chlormequat, Drench, Ornamental cabbage and kale 

Copyright ? 2015 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).