Pulse production is decreased when grown on waterlogged soil in rice‐based cropping. This study evaluated four pulse crops—grass pea, field pea, cowpea and lentil—to find out their responses to waterlogging (WL) stress at emergence and vegetative stages. The treatment levels at emergence were drained control, 4‐, 7‐ and 10‐day WL, while in the vegetative stage they were drained control, 6‐, 10‐ and 14‐day WL. In the emergence stage, %emergence was significantly reduced as WL duration increased. After 10‐day WL, emergence was reduced to 65% for grass pea, 30% for field pea, 5% for lentil and 7% for cowpea. At the vegetative stage, in both the WL and recovery phases, the WL treatment reduced plant height, tap root length, shoot and root dry mass compared to those in drained control with a significant difference in crops. In recovery as compared to the WL phase at 14‐day WL, the chlorophyll content was increased 15% in cowpea and 14% in grass pea but decreased in field pea (26%) and lentil (35%). Similarly, in the recovery phase at 14‐day WL, shoot relative growth rates (RGRs) of cowpea, grass pea, field pea and lentil were 20, 66, 10 and 5 mg plant−1 d−1; which were 66%, 70%, 8% and 14% of drained control, respectively. The RGR of root at 14‐day WL was also higher in cowpea and grass pea with the rate of 13.8 and 16 mg−1 plant−1 d−1, respectively; in sharp contrast to a reduction of −4.3 mg−1 plant−1 d−1 in field pea and −3.9 mg−1 plant−1 d−1 for lentil than drained control. Furthermore, the higher number of adventitious roots was found in cowpea (14) and grass (9) pea than in field pea (6) and lentil (4). Comparison between growth stages, grass pea was tolerant to WL in both stages. Cowpea was WL sensitive at emergence, but tolerant to vegetative stage. Field pea was moderately tolerant to emergence but was sensitive at vegetative stage. Lentil was sensitive at WL at both stages. These novel insights will allow the fitting of winter pulses to various cropping systems according to the perceived risk of WL at various growth stages.

中文翻译：

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冬季豆类作物出苗期和生长期耐涝性的差异

在水稻种植中，在涝渍土壤上种植时，豆类产量会下降。这项研究评估了四种豆类作物——草豌豆、豌豆、豇豆和扁豆——以了解它们在出苗和营养阶段对涝害（WL）胁迫的反应。出苗时的处理水平为排水对照、周龄 4、7 和 10 天，而在营养阶段则为排水对照、周龄 6、10 和 14 天。在出苗阶段，随着 WL 持续时间的增加，出苗百分比显着降低。 10 天 WL 后，草豌豆的出苗率降低至 65%，豌豆为 30%，扁豆为 5%，豇豆为 7%。在营养阶段，在 WL 和恢复阶段，与排水对照相比，WL 处理降低了株高、主根长度、芽和根干质量，且作物差异显着。在恢复过程中，与 WL 14 天的 WL 阶段相比，豇豆的叶绿素含量增加了 15%，草豌豆的叶绿素含量增加了 14%，但豌豆 (26%) 和扁豆 (35%) 的叶绿素含量下降。同样，在 14 天 WL 的恢复阶段，豇豆、草豌豆、豌豆和扁豆的芽相对生长率 (RGR) 分别为 20、66、10 和 5 mg 植物−1d−1;分别为排水对照的 66%、70%、8% 和 14%。豇豆和草豌豆在第 14 天的根部 RGR 也较高，分别为 13.8 和 16 mg−1植物−1d−1， 分别;与-4.3 mg 的减少形成鲜明对比−1植物−1d−1豌豆和−3.9 mg−1植物−1d−1对于扁豆来说，比沥干的对照要好。此外，豇豆 (14) 和草豌豆 (9) 的不定根数量多于豌豆 (6) 和扁豆 (4)。比较各生长阶段，草豌豆在两个阶段均对WL具有耐受性。豇豆在出苗时对WL敏感，但对营养阶段具有耐受性。豌豆对出苗具有中等耐受性，但在生长期敏感。 Lentil 在两个阶段的 WL 都很敏感。这些新颖的见解将允许根据不同生长阶段的 WL 感知风险，将冬季豆类适应不同的种植系统。