Diversity in Drought Traits among Commercial Southeastern US Peanut Cultivars
Commercial peanut cultivars in the USA are often grown under soil and environmental conditions resulting in intermittent periods of water deficit. Two plant traits have been identified that result in conservative use of water and allow sustained growth during drought: (1) restricted transpiration ra...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | International Journal of Agronomy |
| Online Access: | http://dx.doi.org/10.1155/2011/754658 |
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| _version_ | 1832553368853151744 |
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| author | Mura Jyostna Devi Thomas R. Sinclair |
| author_facet | Mura Jyostna Devi Thomas R. Sinclair |
| author_sort | Mura Jyostna Devi |
| collection | DOAJ |
| description | Commercial peanut cultivars in the USA are often grown under soil and environmental conditions resulting in intermittent periods of water deficit. Two plant traits have been identified that result in conservative use of water and allow sustained growth during drought: (1) restricted transpiration rate under high atmospheric vapor pressure deficit (VPD) and (2) earlier closure of stomata in the soil-drying cycle resulting in decreased daily transpiration rate. The objective of this study was to investigate whether there was diversity in these two putative traits for drought resistance among nine US commercial peanut cultivars. When the response to VPD was measured at an average temperature of 32∘C, eight of the nine cultivars expressed a restricted transpiration rate at high VPD. However, at 24∘C none of the cultivars exhibited a restriction of transpiration rate at high VPD. No differences were found among the nine cultivars in their response to soil drying. |
| format | Article |
| id | doaj-art-eec9d67371a24a19b405d2109e127ad1 |
| institution | Kabale University |
| issn | 1687-8159 1687-8167 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Agronomy |
| spelling | doaj-art-eec9d67371a24a19b405d2109e127ad12025-02-03T05:54:12ZengWileyInternational Journal of Agronomy1687-81591687-81672011-01-01201110.1155/2011/754658754658Diversity in Drought Traits among Commercial Southeastern US Peanut CultivarsMura Jyostna Devi0Thomas R. Sinclair1Crop Science Department, North Carolina State University, Raleigh, NC 27695, USACrop Science Department, North Carolina State University, Raleigh, NC 27695, USACommercial peanut cultivars in the USA are often grown under soil and environmental conditions resulting in intermittent periods of water deficit. Two plant traits have been identified that result in conservative use of water and allow sustained growth during drought: (1) restricted transpiration rate under high atmospheric vapor pressure deficit (VPD) and (2) earlier closure of stomata in the soil-drying cycle resulting in decreased daily transpiration rate. The objective of this study was to investigate whether there was diversity in these two putative traits for drought resistance among nine US commercial peanut cultivars. When the response to VPD was measured at an average temperature of 32∘C, eight of the nine cultivars expressed a restricted transpiration rate at high VPD. However, at 24∘C none of the cultivars exhibited a restriction of transpiration rate at high VPD. No differences were found among the nine cultivars in their response to soil drying.http://dx.doi.org/10.1155/2011/754658 |
| spellingShingle | Mura Jyostna Devi Thomas R. Sinclair Diversity in Drought Traits among Commercial Southeastern US Peanut Cultivars International Journal of Agronomy |
| title | Diversity in Drought Traits among Commercial Southeastern US Peanut Cultivars |
| title_full | Diversity in Drought Traits among Commercial Southeastern US Peanut Cultivars |
| title_fullStr | Diversity in Drought Traits among Commercial Southeastern US Peanut Cultivars |
| title_full_unstemmed | Diversity in Drought Traits among Commercial Southeastern US Peanut Cultivars |
| title_short | Diversity in Drought Traits among Commercial Southeastern US Peanut Cultivars |
| title_sort | diversity in drought traits among commercial southeastern us peanut cultivars |
| url | http://dx.doi.org/10.1155/2011/754658 |
| work_keys_str_mv | AT murajyostnadevi diversityindroughttraitsamongcommercialsoutheasternuspeanutcultivars AT thomasrsinclair diversityindroughttraitsamongcommercialsoutheasternuspeanutcultivars |