A quantitative trait locus for reduced culm internode length in barley segregates as a Mendelian gene
A quantitative trait locus for reduced culm internode length in barley segregates as a Mendelian gene
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DOI：
10.1007/s00122-008-0926-9
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发表时间：
2009-02-01
影响因子：
5.4
通讯作者：
Komatsuda, Takao
中科院分区：
文献类型：
--
作者：
Sameri, M.;Nakamura, S.;Komatsuda, Takao
通过降低株高可以部分控制谷物倒伏造成的产量损失。以两个日本大麦品种杂交的重组自交系后代为材料，研究了大麦茎秆和茎秆节间长度的遗传特性。“Kanto Nakate Gold”提供了一个意想不到的缩短茎长（qCUL），主要影响第3和第4茎节间的长度。在两个实验中，该QTL也与减少倒伏有关。“Azumamugi”背景的近等基因系（茎长62.9-73.4 cm）携带含有关东中门金qCUL等位基因的染色体片段，明显短于其循环亲本（82.9-89.4 cm）。下一代回交的F-2代按孟德尔单基因比例进行株高分离。qCUL位点与共显性STS标记ABG608紧密相连（1.2 cM）。
Yield losses caused by lodging in cereals can be partially controlled by reducing plant height. A progeny of recombinant inbred lines from a cross of two Japanese barley varieties was used to study the inheritance of culm and culm internode lengths. An unexpected QTL for reduced culm length (qCUL), which affected mainly the length of the third and fourth culm internodes, was contributed by 'Kanto Nakate Gold'. This QTL was also associated with reduced lodging in two experiments. A near-isogenic line (culm length 62.9-73.4 cm) in an 'Azumamugi' background, carrying a chromosome segment containing the qCUL allele from Kanto Nakate Gold, was significantly shorter than its recurrent parent (82.9-89.4 cm). The F-2 generation from the next backcross segregated for plant height in a Mendelian monogenic ratio. The qCUL locus was shown to be tightly linked (1.2 cM) with the codominant STS marker ABG608.