EFFECT OF GIBBERELLIC ACID ON GROWTH, TUBER YIELD AND QUALITY IN POTATOES (Solanum tuberosum L.)

Authors : Sevgi ÇALIŞKAN, Mohammad Samım HASHEMI, Mustafa AKKAMIŞ, Ramazan İlhan AYTEKİN, Mehmet BEDİR

Pages : 136-146

Doi:10.17557/tjfc.1033429

View : 23 | Download : 11

Publication Date : 2021-12-27

Article Type : Research Paper

Abstract :The purpose of this study was to determine the effects of different doses of gibberellic acid insert ignore into journalissuearticles values(GA3); on growth, tuber yield and some tuber quality traits of potato. The experiment was arranged in a split-plot design with three replicates, cultivars Marabel, Alegria and Agria were arranged in the main plots, and GA3 doses insert ignore into journalissuearticles values(0, 25, 50 and 100 mg GA3 L-1); in the sub-plots. Gibberellic acid was applied to leaves by spraying on the 50th day after planting insert ignore into journalissuearticles values(during flowering);. The effects of GA3 applications on tuber yield of potato cultivars were varied. GA3 applications resulted in significant decrease on chlorophyll content insert ignore into journalissuearticles values(SPAD);, tuber dry matter and chips quality of potato. But it caused significant increase on number of tubers and tuber yield plant-1. In 2019 and 2020 years, the highest tuber yield was obtained from Alegria cultivar insert ignore into journalissuearticles values(62.78 and 50.55 t ha-1 respectively);. Total tuber yield values increased from 52.08 t/ha to 65.14 t ha-1 in 2019 and from 42.12 t ha-1 to 53.94 t ha-1 in 2020 with increasing to 100 mg GA3 L-1 from 0 mgL-1. Overall, increasing doses of GA3 resulted in a reduction in tuber dry matter and starch ratio. The GA3 applications caused deformations in tuber shape, the deformations increased with increasing GA3 doses.
Keywords : Dry matter content, gibberellic acid, Solanum tuberosum, tuber yield, SPAD