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中国农学通报 ›› 2025, Vol. 41 ›› Issue (16): 21-27.doi: 10.11924/j.issn.1000-6850.casb2024-0475

• 生物科学 • 上一篇    下一篇

小麦黄色素相关分子标记的有效性验证

张楠(), 张士昌, 彭义峰, 李亚青, 李孟军(), 史占良   

  1. 石家庄市农林科学研究院,石家庄 050041
  • 收稿日期:2024-07-27 修回日期:2025-03-25 出版日期:2025-06-05 发布日期:2025-06-05
  • 通讯作者:
    李孟军,男,1972年出生,河北玉田人,研究员,博士,主要从事小麦遗传育种研究。通信地址:050041 石家庄市正定县三里屯街道正定新区商务中心东门C区308室,Tel:0311-86839186,E-mail:
  • 作者简介:

    张楠,女,1989年出生,河北石家庄人,农艺师,学士,主要从事作物分子生物学研究。通信地址:050041 石家庄市正定县三里屯街道正定新区商务中心东门C区308室,Tel:0311-86839186,E-mail:

  • 基金资助:
    河北省小麦产业技术体系(HBCT 2023010206); 石家庄市财政专项项目“高黄色素小麦种质创新与新品种选育”(2024-45)

Validation of Molecular Markers Related to Yellow Pigment Content of Wheat Flour

ZHANG Nan(), ZHANG Shichang, PENG Yifeng, LI Yaqing, LI Mengjun(), SHI Zhanliang   

  1. Shijiazhuang Academy of Agriculture and Forestry Sciences, Shijiazhuang 050041
  • Received:2024-07-27 Revised:2025-03-25 Published:2025-06-05 Online:2025-06-05

摘要:

为推动高黄色素小麦分子标记辅助育种工作,测定46个小麦品种(系)的面粉黄色素含量,对黄色素生物合成途径的关键酶(PSY、PDS、ZDS、LCYE)基因,及对面粉具有漂白作用的氧化酶(LOX、POD)基因的相关分子标记进行有效性验证。研究结果显示,不同基因位点的分子标记呈现出不同的情况。Psy-A1Psy-B1位点的功能标记YP7A和YP7B2,Lox-B1位点的显性互补功能标记LOX16和LOX18,在46个小麦品种(系)中均检测到不同的等位变异,不同等位变异间面粉黄色素含量平均值的差异达极显著水平(P<0.01)。Pds-B1位点的共显性功能标记YP4B1和YP4B2,在46个小麦品种(系)中检测到的不同等位变异之间面粉黄色素含量相关性未达到显著水平(P=0.063)。Pod-A1位点的共显性功能标记POD3A1和POD3A2,在46个小麦品种(系)中检测到的不同等位变异之间面粉黄色素含量无显著差异,但Pod-A1a型材料(低POD活性)面粉黄色素含量均值略高于Pod-A1b型材料(高POD活性)。功能标记YP7A、YP7B2、LOX16和LOX18可用于高黄色素小麦分子标记辅助育种,而共显性功能标记YP4B1和YP4B2、POD3A1和POD3A2在高黄色素小麦分子标记辅助育种时应谨慎使用。

关键词: 小麦, 黄色素含量, 黄色素相关基因, 分子标记, 等位变异, 分子标记辅助育种

Abstract:

To advance molecular marker-assisted breeding of high yellow pigment (YP) wheat, this study validated the effectiveness of molecular markers associated with key enzymes (PSY, PDS, ZDS, and LCYE) in the YP biosynthesis pathway and oxidative enzymes (LOX, POD) responsible for flour bleaching. This was achieved by measuring flour YP content in 46 wheat varieties (lines). Functional markers YP7A and YP7B2 at the Psy-A1 and Psy-B1 loci, as well as dominant complementary functional markers LOX16 and LOX18 at the Lox-B1 locus, detected distinct allelic variations across the 46 wheat varieties (lines). The differences in mean flour YP content between these allelic variants reached highly significant levels (P<0.01). However, codominant functional markers YP4B1 and YP4B2 at the Pds-B1 locus showed no significant correlation (P=0.063) between allelic variations and flour YP content. Similarly, codominant functional markers POD3A1 and POD3A2 at the Pod-A1 locus revealed no significant differences in YP content between allelic variants, though Pod-A1a materials (low POD activity) exhibited slightly higher mean YP content compared to Pod-A1b materials (high POD activity). Functional markers YP7A, YP7B2, LOX16, and LOX18 are recommended for molecular marker-assisted breeding of high-yellow pigment wheat, whereas codominant markers YP4B1, YP4B2, POD3A1, and POD3A2 should be applied cautiously in such breeding programs.

Key words: wheat, yellow-pigment content, yellow-pigment related gene, molecular marker, allelic variation, marker-assisted breeding