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Soybean

Chapter
Part of the SpringerBriefs in Environmental Science book series (BRIEFSENVIRONMENTAL)

Abstract

Soybean (Glycine max (Merr.) L) is not often irrigated (<5% of the land area in the major producing countries), so the crop is vulnerable to variations in rainfall. Even short periods of soil water deficit can adversely affect soybean yields, especially because of the high sensitivity of its symbiotic nitrogen fixation to even minor decreases in soil moisture. Therefore, soil water conservation traits have the potential to result in yield increases. Curiously, little variation has been identified among soybean genotypes for early partial stomatal closure with soil drying. On the other hand, a few genotypes have been identified that express initiation of partial stomatal closure at vapor-pressure deficit as low as 2 kPa. Genotype PI 416937, in particular, has become an important genetic contributor in developing soybean cultivars for dry-land conditions. This genotype has been found to have unique properties in plant hydraulic conductivity and aquaporin expression.

Keywords

Recombinant Inbred Line Transpiration Rate Soybean Cultivar Soybean Genotype Lower Hydraulic Conductance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Author(s) 2017

Authors and Affiliations

  1. 1.Crop and Soil Sciences DepartmentNorth Carolina State UniversityRaleighUSA

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