Drought stress has transgenerational effects on soybean seed germination and seedling vigor

English version

Autoři: Chathurika Wijewardana ^aff001; K. Raja Reddy ^aff001; L. Jason Krutz ^aff002; Wei Gao ^aff003; Nacer Bellaloui ^aff004
Působiště autorů: Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS, United States of America ^aff001; Mississippi Water Resources Research Institute, Mississippi State University, Mississippi State, MS, United States of America ^aff002; USDA UVB Monitoring and Research Program, Natural Resource Ecology Laboratory, and Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, United States of America ^aff003; USDA, Agriculture Research Service, Crop Genetics Research Unit, Stoneville, MS, United States of America ^aff004
Vyšlo v časopise: PLoS ONE 14(9)
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pone.0214977

Souhrn

Effects of environmental stressors on the parent may be transmitted to the F1 generation of plants that support global food, oil, and energy production for humans and animals. This study was conducted to determine if the effects of drought stress on parental soybean plants are transmitted to the F1 generation. The germination and seedling vigor of F1 soybean whose maternal parents, Asgrow AG5332 and Progeny P5333RY, were exposed to soil moisture stress, that is, 100, 80, 60, 40, and 20% replacement of evapotranspiration (ET) during reproductive growth, were evaluated under controlled conditions. Pooled over cultivars, effects of soil moisture stress on the parents caused a reduction in the seed germination rate, maximum seed germination, and overall seedling performance in the F1 generation. The effect of soil moisture stress on the parent environment induced seed quality that carried on the F1 generation seed gemination and seedling traits under optimum conditions and further exasperated when exposed to increasing levels of drought stress. Results indicate that seed weight and storage reserve are key factors positively associated with germination traits and seedling growth. Our data confirm that the effects of soil moisture stress on soybean are transferable, causing reduced germination, seedling vigor, and seed quality in the F1 generation. Therefore, optimal water supply during soybean seed formation period may be beneficial for seed producers in terms of optimizing seed quality and vigor characteristics of commodity seed.

Klíčová slova:

Biology and life sciences – Cell biology – Plant science – Organisms – Eukaryota – Plants – Plant pathology – Agriculture – Ecology and environmental sciences – Plant ecology – Plant-environment interactions – Ecology – Soil science – Plant physiology – Plant defenses – Plant resistance to abiotic stress – Plant anatomy – Leaves – Crop science – Crops – Seeds – Plant reproduction – Seed germination – Seedlings – Soybean – Osmotic shock – Edaphology

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Drought stress has transgenerational effects on soybean seed germination and seedling vigor

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