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Seed protein content and its relationships with agronomic traits in pigeonpea is controlled by both main and epistatic effects QTLs

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Relation http://oar.icrisat.org/11583/
https://doi.org/10.1038/s41598-019-56903-z
doi:10.1038/s41598-019-56903-z
 
Title Seed protein content and its relationships with agronomic traits in pigeonpea is controlled by both main and epistatic effects QTLs
 
Creator Obala, J
Saxena, R K
Singh, V K
Kale, S M
Garg, V
Kumar, C V S
Saxena, K B
Tongoona, P
Sibiya, J
Varshney, R K
 
Subject Pigeonpea
Genetics and Genomics
Food and Nutrition
 
Description The genetic architecture of seed protein content (SPC) and its relationships to agronomic traits
in pigeonpea is poorly understood. Accordingly, five F2 populations segregating for SPC and four
agronomic traits (seed weight (SW), seed yield (SY), growth habit (GH) and days to first flowering
(DFF)) were phenotyped and genotyped using genotyping-by-sequencing approach. Five high-density
population-specific genetic maps were constructed with an average inter-marker distance of 1.6 to
3.5 cM, and subsequently, integrated into a consensus map with average marker spacing of 1.6 cM.
Based on analysis of phenotyping data and genotyping data, 192 main effect QTLs (M-QTLs) with
phenotypic variation explained (PVE) of 0.7 to 91.3% were detected for the five traits across the five
populations. Major effect (PVE ≥ 10%) M-QTLs included 14 M-QTLs for SPC, 16 M-QTLs for SW, 17
M-QTLs for SY, 19 M-QTLs for GH and 24 M-QTLs for DFF. Also, 573 epistatic QTLs (E-QTLs) were
detected with PVE ranging from 6.3 to 99.4% across traits and populations. Colocalization of M-QTLs
and E-QTLs explained the genetic basis of the significant (P < 0.05) correlations of SPC with SW,
SY, DFF and GH. The nature of genetic architecture of SPC and its relationship with agronomic traits
suggest that genomics-assisted breeding targeting genome-wide variations would be effective for the
simultaneous improvement of SPC and other important traits.
 
Publisher Nature Research
 
Date 2020-01
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11583/1/s41598-019-56903-z.pdf
Obala, J and Saxena, R K and Singh, V K and Kale, S M and Garg, V and Kumar, C V S and Saxena, K B and Tongoona, P and Sibiya, J and Varshney, R K (2020) Seed protein content and its relationships with agronomic traits in pigeonpea is controlled by both main and epistatic effects QTLs. Scientific Reports (TSI), 10 (1). pp. 1-17. ISSN 2045-2322