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Unravelling genetic architecture and development of core set from elite rice lines using yield-related candidate gene markers

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Title Unravelling genetic architecture and development of core set from elite rice lines using yield-related candidate gene markers
Not Available
 
Creator Rameswar Prasad Sah
Sasmita Behera
Sushant Kumar Dash
T. P. Muhammed Azharudheen
Jitendriya Meher
Awadhesh Kumar
Bishnu Charan Marndi
Meera Kumari Kar
H. N. Subudhi
C. Anilkumar
 
Subject diversity
population structure
rice
grain yield
 
Description Not Available
Assessing genetic diversity and development of
a core set of elite breeding lines is a prerequisite for
selective hybridization programes intended to improve the
yield potential in rice. In the present study, the genetic
diversity of newly developed elite lines derived from
indicax tropical japonica and indicax indica crosses were
estimated by 38 reported molecular markers. The markers
used in the study consist of 24 gene-based and 14 random
markers related to grain yield-related QTLs distributed
across the rice genome. Genotypic characterization was
carried out to determine the genetic similarities between
the elite lines. In total, 75 alleles were found using 38
polymorphic markers, with polymorphism information
content ranging from 0.10 to 0.51 with an average of 0.35.
The genotypes were divided into three groups based on
cluster analysis, structure analysis and also dispersed
throughout the quadrangle of PCA, but nitrogen responsive
lines clustered in one quadrangle. Seven markers
(GS3_RGS1, GS3_RGS2, GS5_Indel1, Ghd 7_05SNP, RM
12289, RM 23065 and RM 25457) exhibited PIC values
C 0.50 indicating that they were effective in detecting
genetic relationships among elite rice. Additionally, a core
set of 11 elite lines was made from 96 lines in order to
downsize the diversity of the original population into a
small set for parental selection. In general, the genetic
information collected in this work will aid in the study of
grain yield traits at molecular level for other sets of rice
genotypes and for selecting diverse elite lines to develop a
strong crossing programme in rice.
ICAR
 
Date 2023-03-06T11:19:19Z
2023-03-06T11:19:19Z
2022-07-08
 
Type Research Paper
 
Identifier Sah, R. P., Behera, S., Dash, S. K., Azharudheen, T. M., Meher, J., Kumar, A., ... & Anilkumar, C. (2022). Unravelling genetic architecture and development of core set from elite rice lines using yield-related candidate gene markers. Physiology and Molecular Biology of Plants, 28(6), 1217-1232.
Not Available
https://doi.org/10.1007/s12298-022-01190-8
http://krishi.icar.gov.in/jspui/handle/123456789/76552
 
Language English
 
Relation Not Available;
 
Publisher 3