Introgression of chromosome 1P from Agropyron cristatum reduces leaf size and plant height to improve the plant architecture of common wheat
Introgression of chromosome 1P from Agropyron cristatum reduces leaf size and plant height to improve the plant architecture of common wheat
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DOI：
10.1007/s00122-022-04086-z
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发表时间：
2022-04
影响因子：
5.4
通讯作者：
Xiao Wang;Bohui Han;Yangyang Sun;Xilu Kang;Meng Zhang;Hai-ming Han;Shenghui Zhou;Weihua Liu;Yuqing Lu;Xin-ming Yang;Xiuquan Li;Jinpeng Zhang;Xu Liu;Lihui Li
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文献类型：
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作者：
Xiao Wang;Bohui Han;Yangyang Sun;Xilu Kang;Meng Zhang;Hai-ming Han;Shenghui Zhou;Weihua Liu;Yuqing Lu;Xin-ming Yang;Xiuquan Li;Jinpeng Zhang;Xu Liu;Lihui Li
关键信息将冰草1P染色体导入普通小麦可以显著降低株高和叶片大小，从而改善普通小麦的株型结构。摘要密植条件下改良株型结构是作物育种的新方向。野生近缘植物携带着丰富的遗传变异，可以增加作物遗传改良的基因多样性。在这项研究中，西娅。通过将附加/替换系II-3-1(2n= 20‘’W + 1P“ + 2P”)与商业轮回亲本cv回交，获得1P附加系、1PS和1PL端体附加系。冀麦22岁。连续4年对遗传群体进行农艺性状调查，结果表明，引种是一种可行的方法。冠状染色体1P导入小麦能显著改善小麦的株型，降低株高、叶长和叶宽。冠状染色体臂1P降低了小麦的株高和叶长，而A。冠状染色体臂1PL降低了株高、叶长和叶宽。总而言之，我们的结果证明了这一点。冠状染色体1P携带小麦小叶的显性基因和增强植株构型的矮秆习性。本研究突出了野生近缘供体作为改良密植小麦株型的新基因资源。
Key messageIntroducingAgropyron cristatumchromosome 1P into common wheat can significantly reduce the plant height and leaf size, which can improve the plant architecture of common wheat.AbstractA new direction in crop breeding is the improvement of plant architecture for dense plantings to obtain higher yields. Wild relatives carry an abundant genetic variation that can increase the diversity of genes for crop genetic improvement. In this study, theA. cristatum1P addition line, 1PS and 1PL telosomic addition lines were obtained by backcrossing the addition/substitution line II-3-1 (2n= 20'' W + 1P" + 2P") with the commercial recurrent parent cv. Jimai 22. Four continuous years of agronomic trait investigation in the genetic populations suggested that the introduction ofA. cristatumchromosome 1P into wheat can significantly improve wheat plant architecture by reducing the plant height, leaf length and leaf width.A. cristatumchromosome arm 1PS reduced the plant height and leaf length of wheat, whereas introducingA. cristatumchromosome arm 1PL reduced the plant height, leaf length and leaf width. Altogether, our results demonstrated thatA. cristatumchromosome 1P carries the dominant genes for small leaves and a dwarf habit for the enhancement of plant architecture in wheat. This study highlights wild relative donors as new gene resources for improving wheat plant architecture for dense planting.