Effect of pinching treatment and foliar spray with paclobutrazol in growth and flowering of Dahlia as a flowering potted plant
DOI:
https://doi.org/10.58916/jhas.v9i5.539الكلمات المفتاحية:
Dahlia، Pinching، Paclobutrazol، flowering، potsالملخص
This research was carried out in pots in the plastic greenhouse of the Horticulture Department of Omar Al-Mukhtar University with the aim of studying the effect of the hybrid (Lady tweedsmuir L.) treatment, hybrid cultivar. Crossing and spraying with paclobutrazol on the growth of Dahlia plants. The plants were divided into four identical groups with three replicates (pots) (CRD). The experiment was subjected to a completely randomized design and the treatments were (plants that were not crossed or sprayed as control, treatment of plants that were not crossed with spraying at a concentration of 100/ppm with paclobutrazol, plants that were crossed and not sprayed with paclobutrazol, in addition to the interaction treatment between crossing and spraying with paclobutrazol). The results of the experiment indicated that the plants exposed to grafting showed a significant decrease in vegetative characteristics such as plant height, fresh or dry weight of branches, while this was reflected in an increase in the number of tuberous roots with a significant delay in flowering compared to the control treatment. In addition, the plants treated with paclobutrazol spray showed better results compared to the control. As for the interaction treatment between grafting and spraying with paclobutrazol, it led to an improvement in the vegetative growth of the plant with a clear decrease in plant height, noting that there was a significant increase in the number of branches and leaves. Compared to the rest of the treatments. From this, we conclude that the grafting treatment, spraying with 100 ppm of paclobutrazol, in addition to the interaction between the two treatments showed a positive effect in improving the characteristics of hybrid dahlia.
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المراجع
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