Delley Seeds and Plants Ltd. (DSP) is a company active in breeding and development within the Swiss seed branch. It is owned by the Swiss seed industry and the Swiss seed growers’ association Swisssem. DSP has a contractual framework with the Federal Office for Agriculture (FOAG), defining co-ownership arrangements with Agroscope and responsibilities for the representation and development of crop varieties in Switzerland and internationally. DSP collaborates closely with Agroscope and maintains partnerships with breeders, variety representatives, branch organisations, and private companies within the seed market, both nationally and internationally.

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A core activity of DSP is the organisation and evaluation of multi-environment field trials for practical breeding. DSP is actively involved in collaborative initiatives such as the PhenoSoy project, supported by FOAG, (DSP × ETH Zurich × Agroscope × Hiphen), where phenotyping data are integrated with environmental and agronomic information to support breeding decisions and ideotype-oriented evaluations. DSP increasingly integrates field-based high-throughput phenotyping approaches, with a focus on UAV-based RGB and multispectral imaging. These methods are applied to quantify canopy cover, plant height, growth dynamics, spectral vegetation indices, and yield-related traits across locations and seasons.

Within the Swiss Plant Phenotyping Network (SPPN), DSP acts both as a user of phenotyping infrastructure and training resources and as a contributor by providing seeds, seed processing capacity, access to field trial sites, applied breeding expertise, and long-term phenotypic datasets.