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Identification of trait-specific germplasm and developing a mini core collection for efficient use of foxtail millet genetic resources in crop improvement

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Relation http://oar.icrisat.org/947/
http://dx.doi.org/10.1016/j.fcr.2011.08.004
 
Title Identification of trait-specific germplasm and developing a mini core collection for efficient use of foxtail millet genetic resources in crop improvement
 
Creator Upadhyaya, H D
Ravishankar, C R
Narasimhudu, Y
Sarma, N D R K
Singh, S K
Varshney, S K
Reddy, V G
Singh, Sube
Parzies, H K
Dwivedi, S L
Nadaf, H L
Sahrawat, K L
Gowda, C L L
 
Subject Millets
 
Description Foxtail millet is an important staple crop in some parts of China, India and Japan, and a potential bioenergy
source. The grains are rich source of protein, fiber, minerals and vitamins. We had earlier reported
the development of a core collection (155 accessions) of foxtail millet. This study was initiated to identify
trait-specific germplasm for agronomic and nutritional traits, and to develop a mini core through multilocational
evaluation of the foxtail millet core collection. One hundred and fifty-five accessions together
with five controls (four common and one location-specific control) were evaluated for 21 descriptors at
five agro-ecologically diverse locations in India during the 2008 rainy season. The experiment was conducted
in an alpha design with three replications at Patancheru, and in an augmented design with one of
the five controls repeated after every nine-test entries at other locations. A number of diverse germplasm
accessions with agronomically (earliness and high grain yield) and nutritionally (high seed protein, calcium,
iron and zinc) superior traits were identified for use in foxtail millet breeding. The hierarchical
cluster analysis of data using phenotypic distances resulted in 25 clusters, from each cluster, ∼10% or
a minimum of one accession was selected to form a mini core, which comprised of 35 accessions. The
comparison of mean, variance, frequency distribution, diversity (H’) and phenotypic correlations revealed
that the mini core indeed captured adequate variability from the core collection. This mini core collection
is an ideal pool of diverse germplasm for studying population structure and diversity, and identifying new
sources of variation for use in breeding and genomics studies in foxtail millet.
 
Publisher Elsevier
 
Date 2011
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/947/1/FCR_124_459-467__2011.pdf
Upadhyaya, H D and Ravishankar, C R and Narasimhudu, Y and Sarma, N D R K and Singh, S K and Varshney, S K and Reddy, V G and Singh, Sube and Parzies, H K and Dwivedi, S L and Nadaf, H L and Sahrawat, K L and Gowda, C L L (2011) Identification of trait-specific germplasm and developing a mini core collection for efficient use of foxtail millet genetic resources in crop improvement. Field Crops Research, 124 (3). pp. 459-467.