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Sorghum germplasm from West and Central Africa maintained in the ICRISAT genebank: Status, gaps, and diversity

OAR@ICRISAT

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Relation http://oar.icrisat.org/10367/
http://dx.doi.org/10.1016/j.cj.2017.07.002
10.1016/j.cj.2017.07.002
 
Title Sorghum germplasm from West and Central Africa maintained in the ICRISAT genebank: Status, gaps, and diversity
 
Creator Upadhyaya, H D
Narsimha Reddy, K
Vetriventhan, M
Irshad Ahmed, M
Gumma, M K
Thimma Reddy, M
Singh, S K
 
Subject Sorghum
Genetics and Genomics
African Agriculture
Germplasm Collection
West Africa
Central Africa
Gene Bank
 
Description The genebank at ICRISAT maintains 8020 accessions of sorghum from 16 West and Central African countries. Geographical gaps and diversity were assessed in the collection. Using the passport data of 3991 accessions for which georeferenced data were available, a total of 386 districts (gaps) located in 11 West and Central African countries were identified as geographical gaps. Burkina Faso with 140 and Nigeria with 118 districts were identified as countries with major geographical gaps. The collection of 43 accessions of wild species represented only three species belonging to Sorghum bicolor ssp. drummondii and ssp. verticilliflorum, S. hevisonii, and S. macrochaeta, highlighting the need for collection missions aimed exclusively at enriching the collection of wild relatives. Accessions having characterization data (7630) were used to assess diversity. The first three principal components contributed to > 60% of variation. Maximum diversity was observed in the collection from Nigeria for both qualitative and quantitative traits. Mean values indicated significant differences between basic and intermediate races for the traits studied. Among the races, accessions of guinea-caudatum for qualitative traits and those of caudatum for quantitative traits were highly diverse. The low intensity of the sorghum collection and the many geographical gaps in the collection underline the importance of launching collection missions to fill the gaps, particularly in regions of predominantly guinea sorghums. Genotyping of possible duplicate accessions is needed to identify duplicates in the collection. It is suggested that all passport information including georeferenced data of collection sites should be collected when samples are collected in gaps.
 
Publisher Crop Science Society of China and Institute of Crop Science, CAAS
 
Date 2017-12
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/10367/1/1-s2.0-S221451411730082X-main.pdf
Upadhyaya, H D and Narsimha Reddy, K and Vetriventhan, M and Irshad Ahmed, M and Gumma, M K and Thimma Reddy, M and Singh, S K (2017) Sorghum germplasm from West and Central Africa maintained in the ICRISAT genebank: Status, gaps, and diversity. The Crop Journal, 5 (6). pp. 518-532. ISSN 22145141