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Commodity risk assessment of Prunus cerasus × Prunus canescens hybrid plants from Ukraine
Abstract:
The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as 'High-risk plants, plant products and other objects'. This Scientific Opinion covers plant health risks posed by plants of hybrids of Prunus cerasus x Prunus canescens imported from Ukraine, taking into account the available scientific information, including the technical information provided by Ukraine. All pests that may be associated with the hybrids of P. cerasus x P. canescens were evaluated against specific criteria for their relevance for this opinion. None of the pests fulfilled all relevant criteria due to the production method and risk mitigation measures carried out by the nursery; therefore, none were selected for further evaluation.
Related Concept Videos
02:27Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
01:18Dihybrid Crosses