Molecular Characterization and Dose-Response to 2,4-D Herbicide in Convolvulus arvensis Populations in Türkiye

Abstract

Field bindweed (Convolvulus arvensis L.) is an important weed species in agricultural areas in Türkiye and worldwide. The study, conducted in 2018-2019, involved collecting seeds from 16 different provinces in Türkiye (Adana, Ankara, Çanakkale, Denizli, Diyarbakır, Erzurum, Hatay, İzmir, Karaman, Kayseri, Konya, Malatya, Samsun, Şanlıurfa, Tekirdağ and Uşak). These seeds were then germinated under greenhouse conditions (29/19°C day/night), and molecular characterization of the samples was performed. As a result of comparing the samples with a specific reference from NCBI GenBank, it was found that the similarity ratios were close to each other but formed different groups. The study revealed that samples from Adana, Konya and Samsun belonged to different groups in terms of similarity. Subsequently, the dose-response rates of these samples to 2,4-D, a herbicide licensed against field bindweed, were determined. In the dose-response analysis of the herbicides, ED50 values of 131.93, 115.42 and 141.89 g.a.i/ha were determined for Adana, Konya and Samsun, respectively. The study concluded that the dose-response of field bindweed in Adana, Konya and Samsun provinces, belonging to different molecular groups, to 2,4-D herbicide is close to each other but exhibits different values.

Keywords

• field bindweed
• weed
• molecular characterization
• herbicide