Abstract:
BACKGROUND:Kernel length is an important target trait in barley (Hordeum vulgare L.) breeding programs. However, the number of known quantitative trait loci (QTLs) controlling kernel length is limited. In the present study, we aimed to identify major QTLs for kernel length, as well as putative candidate genes that might influence kernel length in wild barley. RESULTS:A recombinant inbred line (RIL) population derived from the barley cultivar Baudin (H. vulgare ssp. vulgare) and the long-kernel wild barley genotype Awcs276 (H.vulgare ssp. spontaneum) was evaluated at one location over three years. A high-density genetic linkage map was constructed using 1,832 genome-wide diversity array technology (DArT) markers, spanning a total of 927.07 cM with an average interval of approximately 0.49 cM. Two major QTLs for kernel length, LEN-3H and LEN-4H, were detected across environments and further validated in a second RIL population derived from Fleet (H. vulgare ssp. vulgare) and Awcs276. In addition, a systematic search of public databases identified four candidate genes and four categories of proteins related to LEN-3H and LEN-4H. CONCLUSIONS:This study establishes a fundamental research platform for genomic studies and marker-assisted selection, since LEN-3H and LEN-4H could be used for accelerating progress in barley breeding programs that aim to improve kernel length.
journal_name
BMC Genetjournal_title
BMC geneticsauthors
Zhou H,Liu S,Liu Y,Liu Y,You J,Deng M,Ma J,Chen G,Wei Y,Liu C,Zheng Ydoi
10.1186/s12863-016-0438-6subject
Has Abstractpub_date
2016-09-13 00:00:00pages
130issue
1issn
1471-2156pii
10.1186/s12863-016-0438-6journal_volume
17pub_type
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