Fitness studies on invasive weedy sunflower populations from Serbia
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Date
2017
Journal Title
Journal ISSN
Volume Title
Publisher
Ars Docendi
Access Rights
info:eu-repo/semantics/closedAccess
Abstract
Weedy sunflower has become a problem worldwide, giving significant yield losses in sunflower and soybean fields even at low densities, decreasing their oil quality and allowing gene flow among crops and weeds. Its evolution differs among countries due to availability of wild forms. The problem is not only weedeness but also herbicide resistance in the Republic of Serbia. Three weedy sunflower populations from Serbia were studied: RWS1 and RWS2, which were presumably ALS herbicide resistant and SWS which is susceptible. Plant height, fresh weight, leaf area, relative chlorophyll content, fecundity and percentage of germination, length and weight of seedlings with and without nicosulfuron application were recorded. The most frequently RWS1 and RWS2 populations were of better ecological fitness than the SWS population under the conditions with and without nicosulfuron application. The number of seed produced was higher in RWS1 without herbicide application and RWS2 with nicosulfuron application. It was concluded that the differences in the level of herbicide-resistance could result in different fitness level of weedy sunflower populations which could promote the invasiveness of these populations in landscape.
Description
WOS: 000403059300019
Keywords
fitness, Helianthus annuus, herbicide resistance, invasiveness, nicosulfuron, weedy sunflower
Journal or Series
Romanian Biotechnological Letters
WoS Q Value
Q4
Scopus Q Value
Volume
22
Issue
2
