Effect of shade on production and grain yield in greenhouse wheat varieties
Climate change mitigation and adaptation
Published under CEST2021
Proceedings ISBN: 978-618-86292-1-9
Proceedings ISSN: 2944-9820
The effects of climate change threaten food security by affecting the production and quality of crops that are part of the world's food base, such as wheat. The crop-tree association can act as a tool to mitigate and adapt to climate change, and it is important to analyze the influence of the shade cast by the tree canopy on the yield of important global cereals. This study analyzes the effect of shade (IS: intermediate shade and HS: high shade) on grain yield (GY), straw yield (SY) and number of grains m2 (G m-2), in 17 varieties of winter wheat, with growth cycles of different lengths (early, medium, late). The wheat was sown on two late dates (December 2016 and January 2017), under controlled greenhouse conditions. Straw yield decreased in shady conditions in medium and later varieties, sown in January. Only a decrease of grain yield and number of grains was observed when late varieties were sown in January when HS was applied to plants. These results seem to indicate that the variation in light intensity has a lesser effect in those varieties that are sown in December.
Triticum aestivum L.; commercial varieties; shade, precocity, sowing date