QTL identification for molecular breeding of fibre yield and fibre quality traits in jute

Das, Moumita ; Banerjee, Sumana ; Topdar, Niladri ; Kundu, Avijit ; Mir, Reyazul Rouf ; Sarkar, Debabrata ; Sinha, Mohit K. ; Balyan, Harindra S. ; Gupta, Pushpendra K. (2012) QTL identification for molecular breeding of fibre yield and fibre quality traits in jute Euphytica, 187 (2). pp. 175-189. ISSN 0014-2336

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Official URL: http://link.springer.com/article/10.1007%2Fs10681-...

Related URL: http://dx.doi.org/10.1007/s10681-011-0603-y


In jute (Corchorus olitorius), quantitative trait loci (QTL) analysis was conducted to study the genetics of eight fibre yield traits and two fibre quality traits. For this purpose, we used a mapping population consisting of 120 recombinant inbred lines (RILs) and also used a linkage map consisting of 36 SSR markers that was developed by us earlier (Das et al. 2011). The RIL population was derived from the cross JRO 524 (coarse fibre) × PPO4 (fine fibre) following single seed descent. Using single-locus analysis involving composite interval mapping, a total of 21 QTLs were identified for eight fibre yield traits whereas for fibre quality (fibre fineness), only one QTL was detected. The QTL for fibre fineness explained 8.31–10.56% of the phenotypic variation and was detected in two out of three environments. Using two-locus analysis involving QTLNetwork, as many as 11 M-QTLs were identified for seven fibre yield traits (excluding top diameter) and one M-QTL was identified for fibre fineness which accounted for 4.57% of the phenotypic variation. For six fibre yield traits, we detected 16 E-QTLs involved in nine QQ epistatic interactions. For fibre fineness, four E-QTLs involved in two QQ epistatic interactions and for fibre strength, six E-QTLs involved in three QQ epistatic interactions were identified. Eight out of the 11 M-QTLs observed for the fibre yield traits were also involved in QE interactions; for fibre fineness and fibre strength, no QE interactions were observed.

Item Type:Article
Source:Copyright of this article belongs to Springer-Verlag.
Keywords:Corchorus Olitorius; Quantitative Trait Loci; Fibre Fineness; Main-effect QTL; Epistatic QTL
ID Code:98382
Deposited On:12 Jun 2014 06:18
Last Modified:12 Jun 2014 06:18

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