Breeding soybean cultivars for improved silicon absorption/disease resistance

培育提高硅吸收/抗病性的大豆品种

• 批准号: 462397-2013
• 负责人: Bélanger, Richard
• 金额: $ 5.43万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=645023
• 关键词: Breeding; soybean; cultivars; improved; silicon

Silicon is known to alleviate both biotic and abiotic stresses when fed to plants. However, very little is known about the spectrum of efficacy of Si, how plants react to different sources of Si, and if there is inter and intra species variation in plants' receptivity to the element. In this project, we will test different sources of silicon (potassium silicate, sodium silicate, calcium silicate) on different cultivars of selected plant species against a number of biotic stresses (fungal diseases) and abiotic stresses (e.g. water stress). For each combination of parameters, a large number of variables will be measured (e.g. disease incidence, disease progression, fresh and dry weight and yield) in order to determine which combination offers the best results. These experiments will be repeated three times under greenhouse conditions. Based on those results, the best source of silicon, together with the best cultivars of the tested species will be retained for field evaluations. Field trials will be carried out over two growing seasons and plant's productivity under Si treament will be compared to that of control plants. The ultimate objective is to select the best source of silicon and the best cultivars to determine if this approach could be part of an integrated management program.

硅是已知的，以减轻生物和非生物胁迫时，喂给植物。然而，很少有人知道硅的功效谱，植物如何对不同来源的硅的反应，以及植物对元素的感受性是否存在种间和种内差异。 在这个项目中，我们将测试不同来源的硅（硅酸钾，硅酸钠，硅酸钙）在不同品种的选定植物物种对一些生物胁迫（真菌疾病）和非生物胁迫（如水分胁迫）。对于每种参数组合，将测量大量变量（例如疾病发生率、疾病进展、鲜重和干重以及产量），以确定哪种组合提供最佳结果。这些实验将在温室条件下重复三次。根据这些结果，将保留最佳硅源以及受试品种的最佳品种用于田间评价。田间试验将在两个生长季节进行，并将Si处理下的植物生产力与对照植物的生产力进行比较。最终的目标是选择最好的硅源和最好的品种，以确定这种方法是否可以成为综合管理计划的一部分。