Record Details

Developing a mini core collection of sorghum for diversified utilization of germplasm

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/371/
http://dx.doi.org/10.2135/cropsci2009.01.0014
 
Title Developing a mini core collection of sorghum for diversified utilization of germplasm
 
Creator Upadhyaya, H D
Pundir, R P S
Dwivedi, S L
Gowda, C L L
Reddy, V G
Singh, Sube
 
Subject Sorghum
 
Description The sorghum [Sorghum bicolor (L.) Moench]
germplasm collection at the ICRISAT gene bank
exceeds 37,000 accessions. A core collection
of 2247 accessions was developed in 2001 to
enable researchers to have access to a smaller
set of germplasm. However, this core collection
was found to be too large. To overcome this, a
sorghum mini core (10% accessions of the core
or 1% of the entire collection) was developed
from the existing core collection. The core collection
was evaluated for 11 qualitative and 10
quantitative traits in an augmented design using
three control cultivars in the 2004–2005 postrainy
season. The hierarchical cluster analysis
of data using phenotypic distances resulted in
21 clusters. From each cluster, about 10% or a
minimum of one accession was selected to form
a mini core that comprised 242 accessions. The
data in the mini core and core collections were
compared using statistical parameters such as
homogeneity of distribution for geographical origin,
biological races, qualitative traits, means,
variances, phenotypic diversity indices, and
phenotypic correlations. These tests revealed
that the mini core collection represented the core
collection, which can be evaluated extensively
for agronomic traits including resistance to biotic
and abiotic stresses to identify accessions with
desirable characteristics for use in crop improvement
research and genomic studies.
 
Publisher Crop Science Society of America
 
Date 2009
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/371/1/CropSci49_5_1769-1780_2009.pdf
Upadhyaya, H D and Pundir, R P S and Dwivedi, S L and Gowda, C L L and Reddy, V G and Singh, Sube (2009) Developing a mini core collection of sorghum for diversified utilization of germplasm. Crop Science, 49 (5). pp. 1769-1780.