NDLI: A quantitative trait locus for long photoperiod response mapped on chromosome 4H in barley

Content Provider	Springer Nature Link
Author	Ren, Xifeng Li, Chengdao Cakir, Mehmet Zhang, Wenying Grime, Christy Zhang, Xiao Qi Broughton, Sue Sun, Dongfa Lance, Reg
Copyright Year	2012
Abstract	Photoperiod response is a key determinant for barley adaptation to diverse environments. A major quantitative trait locus (QTL) for response to long photoperiod was identified in Australia (Perth, 31°56′S) and China (Wuhan, 30°33′N) using 178 doubled haploid lines derived from a cross of an Australian barley, Baudin, and a Canadian barley, AC Metcalfe. The QTL was detected as a major QTL in the 18-h photoperiod glasshouse experiments and mapped to the Xp12m50B199–Xp13m47B399 interval on chromosome 4H with a LOD score of 57 in Australia and confirmed in China. The single QTL accounted for 77.48 and 37.81% of phenotypic variation for long photoperiod response in Australia and China, respectively. The same QTL also controlled heading date in Australia, under normal and extended photoperiod conditions, and in China, under extended photoperiod and late-sown conditions. The QTL advanced heading date by 27.8 days in Australia and 42.5 days in China under a 18-h photoperiod. In addition, QTL for heading date were identified on chromosomes 2H and 3H. The chromosome 3H QTL was associated with the denso gene and detected in all conditions, but the chromosome 2H QTL was only detected in Australia. The new photoperiod response QTL, Qhea.BM.4-13/Qpho.BM.4-13, on chromosome 4H and its associated markers will provide an alternative for plant breeders developing new varieties for different environments using marker-assisted selection.
Starting Page	1121
Ending Page	1130
Page Count	10
File Format	PDF
ISSN	13803743
Journal	Molecular Breeding
Volume Number	30
Issue Number	2
e-ISSN	15729788
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-01-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Photoperiod response Quantitative trait loci Marker-assisted selection Hordeum vulgare Plant Physiology Biotechnology Plant Genetics & Genomics Plant Pathology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Molecular Biology Biotechnology Agronomy and Crop Science

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