Do Soil Warming and Changes in Precipitation Patterns Affect Seed Yield and Seed Quality of Field-Grown Winter Oilseed Rape?

Autor: Leonie Hart, Jens Hartung, Christoph Böttcher, Torsten Meiners, Ireen Drebenstedt, Ellen Kandeler, Petra Högy, Sven Marhan, Christian Poll
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Agronomy
Volume 10
Issue 4
Agronomy, Vol 10, Iss 520, p 520 (2020)
ISSN: 2073-4395
DOI: 10.3390/agronomy10040520
Popis: Increasing air and soil temperatures and changes in precipitation patterns as consequences of climate change will affect crop production in agricultural ecosystems. The combined effects of soil warming and altered precipitation on the productivity and product quality of oil crops are not yet well studied. Winter oilseed rape (OSR) (Brassica napus L., cv. Mercedes) was field-grown under elevated soil temperature (+2.5 °
C), reduced precipitation amount (&minus
25%), reduced precipitation frequency (&minus
50%) both separately and in combination in order to investigate effects on crop development, seed yield, and seed quality. Soil warming accelerated crop development during early plant growth and during spring. At maturity, however, plants in all treatments were similar in quantitative (aboveground biomass, seed yield) and qualitative (protein and oil content, amino acids, fatty acids) parameters. We observed the long-term effects of the precipitation manipulation on leaf size, leaf senescence and biomass allocation. Seed yield was not affected by the altered climatic factors, perhaps due to adaptation of soil microorganisms to permanent soil warming and to relatively wet conditions during the seed-filling period. Overall, OSR performed well under moderate changes in soil temperature and precipitation patterns
thus, we observed stable seed yield without negative impacts on nutritive seed quality.
Databáze: OpenAIRE
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