Improving phenotyping in winter barley cultivars towards waterlogging tolerance by combining field trials under natural conditions with controlled growth condition experiments
نویسندگان
چکیده
Additional rainfall in Northern Europe due to global climate change is increasing the incidences of field flooding. Flooding causes hypoxic stress that results a reduced capacity for photosynthesis, reduction nutrient availability and uptake, increased production toxic metabolites by anaerobic bacteria soil, ultimately yield losses crop death. To overcome environmental conditions, new cultivars need be bred tested waterlogging tolerance. We scored 403 winter barley from ‘Association Genetics UK Elite Barley’ (AGOUEB) population, taking advantage phenotypic changes associated with stress. This enabled us identify an initial set sensitive tolerant cultivars. Comparative analysis subset 65 exposed under growth cabinet environments showed variability scores varying sensitivity over multi-season trials. In trials, we observed damage resulting reductions biomass, grain height. However, effects varied between seasons severity differences topography amount rainfall. seasonal variations conditions developed parallel, enhanced phenotyping method complementing experiments controlled conditions. The scoring allows grouping tolerance waterlogging, limited variance Together, these two complementary approaches maximise data available breeders, allowing reliable selection more able grow flooding
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ژورنال
عنوان ژورنال: European Journal of Agronomy
سال: 2022
ISSN: ['1873-7331', '1161-0301']
DOI: https://doi.org/10.1016/j.eja.2021.126432