| Biotechnology |
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| QTL analysis of flag leaf in barley (Hordeum vulgare L.) for morphological traits and chlorophyll content |
| Da-wei XUE, Ming-can CHEN, Mei-xue ZHOU, Song CHEN, Ying MAO, Guo-ping ZHANG |
| Agronomy Department, Zhejiang University, Hangzhou 310029, China; College of Life and Environment Sciences, Hangzhou Normal University, Hangzhou 310036, China; College of Agronomy, Henan University of Science and Technology, Luoyang 471003, China; Tasmanian Institute of Agricultural Research and School of Agricultural Science, University of Tasmania, Kings Meadows, TAS 7249, Australia |
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Abstract To understand genetic patterns of the morphological and physiological traits in flag leaf of barley, a double haploid (DH) population derived from the parents Yerong and Franklin was used to determine quantitative trait loci (QTL) controlling length, width, length/width, and chlorophyll content of flag leaves. A total of 9 QTLs showing significantly additive effect were detected in 8 intervals on 5 chromosomes. The variation of individual QTL ranged from 1.9% to 20.2%. For chlorophyll content expressed as SPAD value, 4 QTLs were identified on chromosomes 2H, 3H and 6H; for leaf length and width, 2 QTLs located on chromosomes 5H and 7H, and 2 QTLs located on chromosome 5H were detected; and for length/width, 1 QTL was detected on chromosome 7H. The identification of these QTLs associated with the properties of flag leaf is useful for barley improvement in breeding programs.
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Received: 01 April 2008
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