Seawater Tolerance of the Beach Bean <i>Vigna marina</i> (Burm.) Merrill in Comparison with Mung Bean (<i>Vigna radiata</i>) and Adzuki Bean (<i>Vigna angularis</i>)

Seawater Tolerance of the Beach Bean <i>Vigna marina</i> (Burm.) Merrill in Comparison with Mung Bean (<i>Vigna radiata</i>) and Adzuki Bean (<i>Vigna angularis</i>)

Seawater intrusion into soils caused by global climate change and tsunami disasters is a significant factor contributing to soil salinization in coastal vegetation areas, posing a critical threat to agriculture and food security. This study aimed to evaluate the seawater tolerance of <i>Vigna...

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Bibliographic Details
Main Authors: Andi Septiana, Shiori P. Nakamura, Riko F. Naomasa, Hideo Yamasaki
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Agriculture
Subjects:
bean
climate change
crop
NaCl stress
food production
salt stress
Online Access:https://www.mdpi.com/2077-0472/15/3/228
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Summary:Seawater intrusion into soils caused by global climate change and tsunami disasters is a significant factor contributing to soil salinization in coastal vegetation areas, posing a critical threat to agriculture and food security. This study aimed to evaluate the seawater tolerance of <i>Vigna marina</i>, a wild <i>Vigna</i> species, through comparative laboratory experiments with <i>Vigna radiata</i> (mung bean) and <i>Vigna angularis</i> (adzuki bean). Unlike <i>V. radiata</i> and <i>V. angularis</i>, the seeds of <i>V. marina</i> exhibited significant buoyancy in seawater, remaining afloat for at least 30 days. After this prolonged seawater incubation, <i>V. marina</i> seeds maintained a 100% germination rate, whereas <i>V. radiata</i> and <i>V. angularis</i> failed to germinate under the same conditions. The photosynthetic activity of <i>V. marina</i> seedlings, evaluated via the Fv/Fm parameter, remained stable even after seven days of seawater irrigation. In contrast, <i>V. radiata</i> and <i>V. angularis</i> perished under seawater irrigation. Furthermore, <i>V. marina</i> seedlings exhibited sustained growth under seawater irrigation, showing consistent increases in both fresh and dry weight. These findings confirm that <i>V. marina</i> possesses remarkable tolerance to seawater, a critical characteristic for cultivation in areas affected by seawater intrusion.
ISSN:2077-0472

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