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首页> 外文期刊>African Journal of Biotechnology >Quality and yield response of soybean (Glycine max L. Merrill) to drought stress in subhumid environment
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Quality and yield response of soybean (Glycine max L. Merrill) to drought stress in subhumid environment

机译：亚湿环境下大豆（Glycine max L. Merrill）对干旱胁迫的质量和产量响应

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The aim of the study was to determine the response of soybean [Glycine max?(L.) Merr.] to drought at various stages of development in a sub-humid environment of Turkey. Drought-stress treatments was applied to plants in 2005 and 2006 by withholding irrigation at six critical stages: completely vegetative (fifth trifoliate) (T2), flowering (T3), podding (T4), seed fill (T5), full bloom + podding (T6), and podding + seed fill (T7). Growth and production was compared in each treatment to full irrigated (T1) and non-irrigated (T8) controls. Each drought treatment reduced shoot biomass and seed yield compared to well-watered plants, but only non-irrigated plants or plants droughted at vegetative or flowering stages produced fewer seed pods and seeds. Seed protein and oil content was highest among treatments when plants were droughted during the seed filling stage. Yield increased exponentially with crop water use and ranged from 2.1 - 2.5 tons ha-1?in non-irrigated plants to 3.5 - 4.0 tons ha-1?in the well-watered controls. However, plants droughted during the vegetative stage of development produced the highest yield per unit of irrigation water applied (that is, irrigation water use efficiency). This research results will be useful for maximizing soybean production and/or seed quality when irrigation water is limited.
机译：该研究的目的是确定在土耳其半湿润环境中，大豆[Glycine max？（L。）Merr。]在发育的各个阶段对干旱的响应。通过在六个关键阶段停止灌溉，2005年和2006年对植物进行了干旱胁迫处理：完全营养（三叶草第五个）（T2），开花（T3），荚果（T4），种子填充（T5），盛开+荚果（T6），以及豆荚+种子填充（T7）。将每种处理的生长和产量与完全灌溉（T1）和非灌溉（T8）对照进行比较。与水分充足的植物相比，每种干旱处理都降低了枝条的生物量和种子产量，但只有非灌溉植物或在营养或开花期干旱的植物产生的豆荚和种子更少。在种子灌浆期对植物进行干旱处理时，种子蛋白和油含量最高。产量随作物用水的增加而呈指数增长，范围从非灌溉植物的2.1-2.5吨ha-1？到灌溉良好的对照的3.5-4.0吨ha-1?。但是，在营养生长阶段干旱的植物每单位灌溉用水的产量最高（即灌溉用水效率）。当灌溉水有限时，该研究结果对于最大化大豆产量和/或种子质量将是有用的。

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