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Quantitative trait loci ( QTL ) mapping of silique length and petal colour in Brassica rapa
Author(s) -
Kebede Berisso,
Rahman Habibur
Publication year - 2014
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12193
Subject(s) - silique , quantitative trait locus , biology , petal , brassica rapa , inbred strain , epistasis , genetics , locus (genetics) , botany , gene , mutant , arabidopsis
Recombinant inbred lines ( RIL s) derived from a cross between Brassica rapa L. cv. ‘Sampad’, and an inbred line 3‐0026.027 was used to map the loci controlling silique length and petal colour. The RIL s were evaluated under four environments. Variation for silique length in the RIL s ranged from normal, such as ‘Sampad’, to short silique, such as 3‐0026.027. Three QTL , SLA 3, SLA 5 and SLA 7, were detected on the linkage groups A3, A5 and A7, respectively. These QTL explained 36.0 to 42.3% total phenotypic variance in the individual environments and collectively 32.5% phenotypic variance. No additive × additive epistatic interaction was detected between the three QTL . Moreover, no QTL × environment interaction was detected in any of the four environments. The number of loci for silique length detected based on QTL mapping agrees well with the results from segregation analysis of the RIL s. In case of petal colour, a single locus governing this trait was detected on the linkage group A2.