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ARS Home » Midwest Area » Columbus, Ohio » Soil Drainage Research » Research » Publications at this Location » Publication #219376
Title: Tolerance of Soybean Crops to Soil Waterlogging

Author
item HOA, TRAN THI CUC - CUU LONG DELTA RICE RES.
item Vantoai, Tara
item HUE, NGUYEN THI NGOC - NAT. CEN. SOYBEAN BIOTECH
item NGUYEN, HENRY - UNIVERSITY OF MISSOURI
item SHANNON, GROVER - UNIVERSITY OF MISSOURI
item BISHOP, BERT - THE OHIO STATE UNIVERSITY

Submitted to: Conference of the International Society for Plant Anaerobiosis
Publication Type: Abstract Only
Publication Acceptance Date: 5/1/2007
Publication Date: 11/22/2007
Citation: Hoa, T., Vantoai, T.T., Hue, N., Nguyen, H., Shannon, G., Bishop, B. 2007. Tolerance of Soybean Crops to Soil Waterlogging. Conference of the International Society for Plant Anaerobiosis [abstract]. p. 47.

Interpretive Summary:

Technical Abstract: Monoculture of irrigated paddy rice, common in the Mississippi delta of the United States and in Asia, diminishes soil nutrients, compacts soils, contaminates water supplies, and increases pest and diseases. While the addition of soybean crops to this cropping ecosystem can attenuate many of these problems, they must be tolerant to waterlogging. This study examined the responses of 22 soybean landraces from Southeast Asia, where cultivation in wet conditions is widespread, to waterlogging. Waterlogging for fourteen days at the early reproduction stage accelerated the average maturity of 22 soybean genotypes by eleven days. This early senescence ranged from eight days in tolerant genotypes, to 17 days in susceptible genotypes. The ultimate criterion of waterlogging-tolerance is the capability to produce high seed yields in waterlogged fields. Tolerant genotypes produce more pods per plant, and more seeds per pod, than susceptible genotypes. Plant height was only correlated with seed yield under non-stressed control conditions. Waterlogging tolerance can also be defined as minimal or no yield loss in waterlogged conditions. In this study, yield reduction due to waterlogging was negatively correlated to control yield, with the exception of the genotype "Nam Vang". This genotype produced high seed yields under both control and waterlogging conditions and could provide new genetic resources for improving the waterlogging tolerance of soybean cultivars.