Volume 7, Issue 3 (2016)
JMBS 2016, 7(3): 20-30 |
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Darvishzadeh R. Identification of quantitative trait loci for chemical characteristics in an oriental tobacco recombinant inbred line population. JMBS 2016; 7 (3) :20-30
URL: http://biot.modares.ac.ir/article-22-7931-en.html
URL: http://biot.modares.ac.ir/article-22-7931-en.html
Abstract: (10535 Views)
One of the newest methods in plant breeding programs is mapping quantitative trait loci (QTL) with molecular markers. In order to identify QTL associated with some chemical traits such as chlorine, nicotine, sugar concentrations and ash in oriental tobacco, a population of 55 recombinant inbred lines coming from the cross Basma seres 31 × SPT406 were evaluated for above mentioned traits. QTL mapping was performed using linkage map developed on 103 recombinant inbred lines by 64 molecular markers including 14 SSR, 24 ISSR and 26 retrotransposone. The linkage map is composed of 7 linkage groups (LGs). Composite interval mapping revealed 5 QTLs associated with studied traits. Phenotypic variation explained by identified QTLs varied between 0.34 and 0.70. Any QTL was not detected for sugar concentration in tobacco leaves. Common markers between some of studied traits can be due to linkage or pleiotropic effects. The common markers lead to increase the efficiency of marker-assisted selection in plant breeding programs via simultaneously selection for several traits.
Article Type: Research Paper |
Subject:
Genetics
Received: 2015/11/20 | Accepted: 2016/02/6 | Published: 2016/10/22
Received: 2015/11/20 | Accepted: 2016/02/6 | Published: 2016/10/22
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