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THE EFFECT OF PHOTOPERIOD, PACLOBUTRAZOL AND PINCHING ON THE TUBER ROOTS AND DAHLIA'S FLOWERS WHICH GROWTH IN POTS . | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 15, Issue 1, 2015, Pages 47-57 | ||
| Authors | ||
| Mohammed Basim M. Al-janabi; Ali Farouq Al-Maathedi | ||
| Abstract | ||
| The study was conducted in the greenhouse of Horticulture & landscape Design Dept., College of Agriculture, University of Tikrit for the duration of 16/10/2012 to 01/03/2013 of Dahlia plants var Deco mix in order to study the effect of photoperiod and Paclobutrazol and Pinching in the roots and flowers dahlia planted in pots, the workers were carried out the study as an experiment and with three factors using these pots for experimental unit (R C B D) randomized complete block design with three replications and at the rate of three pots per unit experimental , And included the first factor: photoperiod The first factor in the main plot and includes four levels of lighting which is no fault of the day to 9 hours for two to four weeks and six weeks, and the second factor: Paclobutrazol add two levels and 3 mg. Liter-1 and placed in the secondary plot , and the third factor is: Pinching This factor in the development of a sub plot under two secondary and two levels without pinching and pinching, has indicated that the results shows plants growing without shortening daylight highest qualities of vegetative growth, such as high vegetative growth and plant height. Add Paclobutrazol concentration 3 mg. Liter-1 reduce the number of inflorescences gave 0.70 infloral. Pinching treatment not have a significant effect in root growth. | ||
| Keywords | ||
| Photoperiodism; Paclobutrazole; Pinching and Dahlia | ||
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