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Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/53268
Title: | Detection of Chromosome segment substitution lines and yield QTLs with additive, epistatic and QTL × environment interaction effects from Oryza sativa/ O. nivara IRGC81832 cross |
Other Titles: | Not Available |
Authors: | Divya Balakrishnan, Malathi S, AK Raju, YV Rao, S Mesapogu, Kavitha B and Sarla N |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Indian Institute of Rice Research |
Published/ Complete Date: | 2020-04-01 |
Project Code: | Not Available |
Keywords: | CSSLs, wild introgression lines, QTL mapping |
Publisher: | Not Available |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | Chromosome segment substitution lines (CSSLs) are useful tools for precise mapping of quantitative trait loci (QTLs) and the evaluation of gene action and interaction in inter-specifc crosses. In this study, a set of 90 back cross lines at BC2F8 generation derived from Swarna x Oryza nivara IRGC81832 was evaluated for yield traits under irrigated conditions in wet seasons of 3 consecutive years. We identifed a set of 70 chromosome segment substitution lines, using genotyping data from 140 SSR markers covering 94.4% of O. nivara genome. Among these, 23 CSSLs were signifcantly diferent for 7 traits. 22 QTLs were detected for 11 traits with 6.51 to 46.77% phenotypic variation in 90 BILs. Three pleiotropic genomic regions associated with yield traits were mapped on chromosomes 1, 8 and 11. The marker interval RM206-RM144 at chromosome 11 was recurrently detected for various yield traits. Ten QTLs were identifed consistently in the three consecutive years of testing. Seventeen pairs of signifcant epistatic QTLs (E-QTLs) were detected for days to fowering, days to maturity and plant height. Chromosome segments from O. nivara contributed trait enhancing alleles. The signifcantly improved lines and the stable QTLs identifed in this study are valuable resource for gene discovery and yield improvement. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Article |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Scientific Reports |
NAAS Rating: | 10 |
Volume No.: | Not Available |
Page Number: | Not Available |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | https://doi.org/10.1038/s41598-020-64300-0 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/53268 |
Appears in Collections: | CS-IIRR-Publication |
Files in This Item:
File | Description | Size | Format | |
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db 2020 Sci report db.pdf | 2.19 MB | Adobe PDF | View/Open |
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