QTL analysis of flag leaf in barley (Hordeum vulgare L.) for morphological traits and chlorophyll content |
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| Authors: | Da-wei XUE Ming-can CHEN Mei-xue ZHOU Song CHEN Ying MAO Guo-ping ZHANG |
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| Institution: | Da-wei XUE1,2,Ming-can CHEN3,Mei-xue ZHOU4,Song CHEN1,Ying MAO1,Guo-ping ZHANG1 (1Agronomy Department,Zhejiang University,Hangzhou 310029,China) (2College of Life , Environment Sciences,Hangzhou Normal University,Hangzhou 310036,China) (3College of Agronomy,Henan University of Science , Technology,Luoyang 471003,China) (4Tasmanian Institute of Agricultural Research , 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; fur 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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| Keywords: | Barley (Hordeum vulgate L ) Double haploid (DH) Flag leaf Quantitative trait loci (QTL) |
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