Akademik Veri Yönetim Sistemi
KSU TARIM VE DOGA DERGISI-KSU JOURNAL OF AGRICULTURE AND NATURE, cilt.26, sa.4, ss.767-777, 2023 (ESCI)
Gibberellic acid (GA3) is a vital hormone synthesized endogenously in grapevines as in all plants, affects many physiological and biochemical events, and is also the most widely used plant growth regulator exogenous to regulate growth and development in viticulture. The germination and transformation of the seed into seedlings, which is used as a starting material in breeding studies, are among the most important criteria of breeding success, and losses are experienced at this stage due to various reasons. This study investigates the effects of GA3 applications at different concentrations on the germination characteristics of hybrid seeds of two different grapevine combinations of American origin obtained as a result of crossbreeding. To carry out the interspecies hybridization, three different grapevine species ("Ramsey", "5 BB" and "Rupestris du Lot") were used as parents, and GA3 applications at different concentrations testing in two different hybrid grapevine populations ("Ramsey x Rupestris du Lot" and "5 BB x Rupestris du Lot"), and investigations were carried out to determine the most effective GA3 concentration on seed germination. When both hybrid grapevine populations were evaluated together, the highest averages were obtained from 1000 ppm concentration as 59.63% and this value was in the same statistical group with 500 ppm (56.34%) and 2000 ppm (56.91%) GA3 applications. The results obtained from this study will facilitate other researches to be carried out to increase the germination level of hybrid grapevine seeds. At the same time, this study will provide an important reference for researchers in terms of more efficient use of grapevine germplasm resources and prevention of loss of genetic diversity.