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Integrating principal component score strategy with power core method for development of core collection in Indian soybean germplasm

Published online by Cambridge University Press:  07 December 2015

C. Gireesh Open the ORCID record for C. Gireesh [Opens in a new window] ,
S. M. Husain ,
M. Shivakumar ,
G. K. Satpute ,
Giriraj Kumawat ,
Mamta Arya ,
D. K. Agarwal  and
V. S. Bhatia
C. Gireesh*
Affiliation:
ICAR-Directorate of Soybean Research, Indore, Madhya Pradesh, India
S. M. Husain
Affiliation:
ICAR-Directorate of Soybean Research, Indore, Madhya Pradesh, India
M. Shivakumar
Affiliation:
ICAR-Directorate of Soybean Research, Indore, Madhya Pradesh, India
G. K. Satpute
Affiliation:
ICAR-Directorate of Soybean Research, Indore, Madhya Pradesh, India
Giriraj Kumawat
Affiliation:
ICAR-Directorate of Soybean Research, Indore, Madhya Pradesh, India
Mamta Arya
Affiliation:
ICAR-Directorate of Soybean Research, Indore, Madhya Pradesh, India
D. K. Agarwal
Affiliation:
ICAR-Directorate of Soybean Research, Indore, Madhya Pradesh, India
V. S. Bhatia
Affiliation:
ICAR-Directorate of Soybean Research, Indore, Madhya Pradesh, India
*
*Corresponding author. E-mail: giri09@gmail.com
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Abstract

Soybean is a leading oilseed crop in India, which contains about 40% of protein and 20% of oil. Core collection will accelerate the management and utilization of soybean genetic resources in breeding programmes. In the present study, eight agromorphological traits of 3443 soybean germplasm were analysed for the development of core collection using the principal component score (PCS) strategy and the power core method. The PCS strategy yielded core collection (CC1) of 576 accessions, which accounted for 16.72% of the entire collection (EC). The analysis based on the power core programme resulted in CC2 of 402 accessions, which accounted for 11.67% of the EC. Statistical analysis showed similar trends for the mean and range estimated in both core collections and EC. In addition, the variance, standard deviation and coefficient of variance were in general higher in core collections than in the EC. The correlations observed in the EC in general were preserved in core collections. A total of 311 and 137 unique accessions were found in CC1 and CC2 in addition to 265 accessions that were found to be common in both core collections. These 265 common accessions were the most diverse core sets, which accounted for 7.64% of the EC. We proposed to constitute an integrated core collection (ICC) by integrating both common and unique accessions. The ICC comprised 713 accessions, which accounted for about 20.62% of the EC. Statistical analysis indicated that the ICC captured maximum variation than CC1 and CC2. Therefore, the ICC can be extensively evaluated for a large number of economically important traits for the identification of desirable genotypes and for the development of mini core collection in soybean.

Keywords

entire collectiongermplasmprincipal component analysisvariability
Type
Research Article
Information
Plant Genetic Resources , Volume 15 , Issue 3 , June 2017 , pp. 230 - 238
Copyright
Copyright © NIAB 2015 

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Footnotes

†

Present address: ICAR-Indian Institute of Rice Research, Hyderabad, India.

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