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Mapping and validating quantitative trait loci (QTL) for anthocyanin-related genes, coupled with marker analysis for pericarp pigmentation and yield traits in a black and white rice cross

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Title Mapping and validating quantitative trait loci (QTL) for anthocyanin-related genes, coupled with marker analysis for pericarp pigmentation and yield traits in a black and white rice cross
 
Creator Savitha, P
Jeyaprakash, P
Akilan, M
Geethanjali, S
 
Subject Manipur black rice (Chakhao poireiton)
Kala4
QTL mapping
Yield traits
 
Description 919-940
This study explores the genetic mechanisms underpinning pigmentation traits in rice, with emphasis on the Kala4 gene
responsible for black pigmentation which offers several health benefits. The Kala4 trait was incorporated into the Improved
White Ponni variety to develop a black rice introgression line. Comprehensive genomic analysis identified specific
chromosomal regions related to black pigmentation and yield traits. The study evaluated 200 F2 plants derived from a cross
between Manipur Black rice and Improved White Ponni, using 81 distinct polymorphism markers. The results confirmed the
crucial role of the Kala4 loci in black pigmentation and identified key genes regulating anthocyanin synthesis and the
PURPLE PERICARP trait. This enhanced our understanding of rice pigmentation and its genetic intricacies. The study also
evaluated yield-associated traits in the F2 population, identifying eleven QTLs related to yield, most notably on chromosome 4.
These QTLs contribute significantly to phenotypic variance, suggesting their potential for marker-assisted selection in
breeding programs. Continued exploration of the Kala4 gene on chromosome 4 can provide further insights into QTLs for
hybrid rice, expediting future rice improvement strategies and allowing for targeted selection in breeding programs, thereby
enhancing future rice crop development strategies.
 
Date 2024-01-12T11:07:06Z
2024-01-12T11:07:06Z
2024-01
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/63187
https://doi.org/10.56042/ijbb.v60i12.6956
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJBB Vol.60(12) [December 2023]