Evaluation of cowpea for drought tolerance at seedling stage

Waltram Ravelombola; Ainong Shi; Senyu Chen; Haizheng Xiong; Yufeng Yang; Qirui Cui; Dotun Olaoye; Beiquan Mou

doi:10.1007/s10681-020-02660-4

Evaluation of cowpea for drought tolerance at seedling stage

Waltram Ravelombola, Ainong Shi, Senyu Chen, Haizheng Xiong, Yufeng Yang, Qirui Cui, Dotun Olaoye, Beiquan Mou

Southern Research and Outreach Center

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Cowpea is a health-promoting diploid legume species [Vigna unguiculata (L.) Walp., 2n = 2x = 22]. The annual cowpea production is 5.4 million tons of dry seed globally. Despite the fact that cowpea is one of the most drought-tolerant crops, some genotypes with excellent agronomic traits such as high yield under sufficient water supplies have been reported to be highly drought-susceptible, thus still requiring the need for breeding drought-tolerant cowpea genotypes. Therefore, the objectives of this study were to evaluate drought tolerance in cowpea at seedling stage and to identify drought-tolerant cowpea genotypes. In this study, a total of 331 cowpea genotypes were evaluated for drought tolerance at seedling stage. The experiment was conducted in a greenhouse and repeated 3 times. Drought tolerance phenotyping was conducted using a previously described methodology and a total of 11 traits were analyzed. The experiment was validated by the use of drought-tolerant and susceptible controls. Results showed that: (1) a large variation in the evaluated traits for drought tolerance was identified among the 331 cowpea genotypes, (2) a high correlation was found for traits such as plant greenness score and tolerance to trifoliate leaf chlorosis under drought stress (r = 0.8), whereas no linear correlation was found for traits such as tolerance to trifoliate leaf chlorosis and unifoliate leaf SPAD chlorophyll under non-drought stress (r = 0.0), (3) a total of 21 genotypes were found to be drought-tolerant across different traits, and (4) country of origins could impact drought tolerance in cowpea. The top performing genotypes were repeated using an independent experiment to further validate the data. The results from this study would be of interest in breeding programs aiming at improving drought tolerance in cowpea.

Original language	English (US)
Article number	123
Journal	Euphytica
Volume	216
Issue number	8
DOIs	https://doi.org/10.1007/s10681-020-02660-4
State	Published - Aug 1 2020

Bibliographical note

Funding Information:
This work is supported, in part, by the USDA National Institute of Food and Agriculture Hatch project accession number 1002423 and 1017337, and also by USDA Crop Germplasm Committees program for Vigna germplasm evaluation with Agreement Number/FAIN: 58-6046-9-004, Project Number: 6046-21000-012-13S, and Accession No.: 436920.

Publisher Copyright:
© 2020, Springer Nature B.V.

Keywords

Cowpea
Drought
Screening germplasm
Tolerance

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access

10.1007/s10681-020-02660-4

OpenUrl availability

Full text

Cite this

@article{6333274ddeb4441087a763dc750a2b4b,

title = "Evaluation of cowpea for drought tolerance at seedling stage",

abstract = "Cowpea is a health-promoting diploid legume species [Vigna unguiculata (L.) Walp., 2n = 2x = 22]. The annual cowpea production is 5.4 million tons of dry seed globally. Despite the fact that cowpea is one of the most drought-tolerant crops, some genotypes with excellent agronomic traits such as high yield under sufficient water supplies have been reported to be highly drought-susceptible, thus still requiring the need for breeding drought-tolerant cowpea genotypes. Therefore, the objectives of this study were to evaluate drought tolerance in cowpea at seedling stage and to identify drought-tolerant cowpea genotypes. In this study, a total of 331 cowpea genotypes were evaluated for drought tolerance at seedling stage. The experiment was conducted in a greenhouse and repeated 3 times. Drought tolerance phenotyping was conducted using a previously described methodology and a total of 11 traits were analyzed. The experiment was validated by the use of drought-tolerant and susceptible controls. Results showed that: (1) a large variation in the evaluated traits for drought tolerance was identified among the 331 cowpea genotypes, (2) a high correlation was found for traits such as plant greenness score and tolerance to trifoliate leaf chlorosis under drought stress (r = 0.8), whereas no linear correlation was found for traits such as tolerance to trifoliate leaf chlorosis and unifoliate leaf SPAD chlorophyll under non-drought stress (r = 0.0), (3) a total of 21 genotypes were found to be drought-tolerant across different traits, and (4) country of origins could impact drought tolerance in cowpea. The top performing genotypes were repeated using an independent experiment to further validate the data. The results from this study would be of interest in breeding programs aiming at improving drought tolerance in cowpea.",

keywords = "Cowpea, Drought, Screening germplasm, Tolerance",

author = "Waltram Ravelombola and Ainong Shi and Senyu Chen and Haizheng Xiong and Yufeng Yang and Qirui Cui and Dotun Olaoye and Beiquan Mou",

note = "Funding Information: This work is supported, in part, by the USDA National Institute of Food and Agriculture Hatch project accession number 1002423 and 1017337, and also by USDA Crop Germplasm Committees program for Vigna germplasm evaluation with Agreement Number/FAIN: 58-6046-9-004, Project Number: 6046-21000-012-13S, and Accession No.: 436920. Publisher Copyright: {\textcopyright} 2020, Springer Nature B.V.",

year = "2020",

month = aug,

day = "1",

doi = "10.1007/s10681-020-02660-4",

language = "English (US)",

volume = "216",

journal = "Euphytica",

issn = "0014-2336",

publisher = "Springer Netherlands",

number = "8",

}

TY - JOUR

T1 - Evaluation of cowpea for drought tolerance at seedling stage

AU - Ravelombola, Waltram

AU - Shi, Ainong

AU - Chen, Senyu

AU - Xiong, Haizheng

AU - Yang, Yufeng

AU - Cui, Qirui

AU - Olaoye, Dotun

AU - Mou, Beiquan

N1 - Funding Information: This work is supported, in part, by the USDA National Institute of Food and Agriculture Hatch project accession number 1002423 and 1017337, and also by USDA Crop Germplasm Committees program for Vigna germplasm evaluation with Agreement Number/FAIN: 58-6046-9-004, Project Number: 6046-21000-012-13S, and Accession No.: 436920. Publisher Copyright: © 2020, Springer Nature B.V.

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Cowpea is a health-promoting diploid legume species [Vigna unguiculata (L.) Walp., 2n = 2x = 22]. The annual cowpea production is 5.4 million tons of dry seed globally. Despite the fact that cowpea is one of the most drought-tolerant crops, some genotypes with excellent agronomic traits such as high yield under sufficient water supplies have been reported to be highly drought-susceptible, thus still requiring the need for breeding drought-tolerant cowpea genotypes. Therefore, the objectives of this study were to evaluate drought tolerance in cowpea at seedling stage and to identify drought-tolerant cowpea genotypes. In this study, a total of 331 cowpea genotypes were evaluated for drought tolerance at seedling stage. The experiment was conducted in a greenhouse and repeated 3 times. Drought tolerance phenotyping was conducted using a previously described methodology and a total of 11 traits were analyzed. The experiment was validated by the use of drought-tolerant and susceptible controls. Results showed that: (1) a large variation in the evaluated traits for drought tolerance was identified among the 331 cowpea genotypes, (2) a high correlation was found for traits such as plant greenness score and tolerance to trifoliate leaf chlorosis under drought stress (r = 0.8), whereas no linear correlation was found for traits such as tolerance to trifoliate leaf chlorosis and unifoliate leaf SPAD chlorophyll under non-drought stress (r = 0.0), (3) a total of 21 genotypes were found to be drought-tolerant across different traits, and (4) country of origins could impact drought tolerance in cowpea. The top performing genotypes were repeated using an independent experiment to further validate the data. The results from this study would be of interest in breeding programs aiming at improving drought tolerance in cowpea.

AB - Cowpea is a health-promoting diploid legume species [Vigna unguiculata (L.) Walp., 2n = 2x = 22]. The annual cowpea production is 5.4 million tons of dry seed globally. Despite the fact that cowpea is one of the most drought-tolerant crops, some genotypes with excellent agronomic traits such as high yield under sufficient water supplies have been reported to be highly drought-susceptible, thus still requiring the need for breeding drought-tolerant cowpea genotypes. Therefore, the objectives of this study were to evaluate drought tolerance in cowpea at seedling stage and to identify drought-tolerant cowpea genotypes. In this study, a total of 331 cowpea genotypes were evaluated for drought tolerance at seedling stage. The experiment was conducted in a greenhouse and repeated 3 times. Drought tolerance phenotyping was conducted using a previously described methodology and a total of 11 traits were analyzed. The experiment was validated by the use of drought-tolerant and susceptible controls. Results showed that: (1) a large variation in the evaluated traits for drought tolerance was identified among the 331 cowpea genotypes, (2) a high correlation was found for traits such as plant greenness score and tolerance to trifoliate leaf chlorosis under drought stress (r = 0.8), whereas no linear correlation was found for traits such as tolerance to trifoliate leaf chlorosis and unifoliate leaf SPAD chlorophyll under non-drought stress (r = 0.0), (3) a total of 21 genotypes were found to be drought-tolerant across different traits, and (4) country of origins could impact drought tolerance in cowpea. The top performing genotypes were repeated using an independent experiment to further validate the data. The results from this study would be of interest in breeding programs aiming at improving drought tolerance in cowpea.

KW - Cowpea

KW - Drought

KW - Screening germplasm

KW - Tolerance

UR - http://www.scopus.com/inward/record.url?scp=85087700942&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85087700942&partnerID=8YFLogxK

U2 - 10.1007/s10681-020-02660-4

DO - 10.1007/s10681-020-02660-4

M3 - Article

AN - SCOPUS:85087700942

SN - 0014-2336

VL - 216

JO - Euphytica

JF - Euphytica

IS - 8

M1 - 123

ER -

Evaluation of cowpea for drought tolerance at seedling stage

Abstract

Bibliographical note

Keywords

UN SDGs

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this