Open AccessMapping QTLs for 15 morpho-metric traits in Arabidopsis thaliana using Col-0 × Don-0 population
Author(s) -
Amitava Sen Gupta,
Vandana Jaiswal,
Samir V. Sawant,
Hemant Kumar Yadav
Publication year - 2020
Publication title -
physiology and molecular biology of plants/physiology and molecular biology of plants
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.754
H-Index - 35
eISSN - 0971-5894
pISSN - 0974-0430
DOI - 10.1007/s12298-020-00800-7
Subject(s) - quantitative trait locus , biology , population , genetics , epistasis , inclusive composite interval mapping , association mapping , single nucleotide polymorphism , gene mapping , gene , genotype , chromosome , demography , sociology
Genome wide quantitative trait loci (QTL) mapping was conducted in Arabidopsis thaliana using F 2 mapping population (Col-0 × Don-0) and SNPs markers. A total of five linkage groups were obtained with number of SNPs varying from 45 to 59 per linkage group. The composite interval mapping detected a total of 36 QTLs for 15 traits and the number of QTLs ranged from one (root length, root dry biomass, cauline leaf width, number of internodes and internode distance) to seven (for bolting days). The range of phenotypic variance explained (PVE) and logarithm of the odds ratio of these 36 QTLs was found be 0.19-38.17% and 3.0-6.26 respectively. Further, the epistatic interaction detected one main effect QTL and four epistatic QTLs. Five major QTLs viz. Qbd.nbri.4.3 , Qfd.nbri.4.2 , Qrdm.nbri.5.1 , Qncl.nbri.2.2 , Qtd.nbri.4.1 with PVE > 15.0% might be useful for fine mapping to identify genes associated with respective traits, and also for development of specialized population through marker assisted selection. The identification of additive and dominant effect QTLs and desirable alleles of each of above mentioned traits would also be important for future research.