Preharvest Sprouting Resistance Test and Functional Markers Assisted Genotyping in Wheat Germplasm Resources
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1.College of Agriculture,Henan Agricultural University/Co-construction State Key Laboratory of Wheat and Maize Crop Science/ Collaborative Innovation Center of Henan Grain Crops/The National Engineering Research Centre for Wheat,Zhengzhou 450001;2.Henan Fengdekang Seed Industry Co., Ltd, Zhengzhou 450001;3.Henan Jiaozuo Seed Station, Jiaozuo 454000

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Foundation projects: Major Science and Technology Project of Henan Province in 2022(221100110700); Henan Province Agricultural Improved Breeds Joint Research Project (2022010102); Modern Agricultural Industry Technology System Construction Project of Henan Province (HARS-22-01-G2); Henan Provincial Science and Technology R&D Plan Joint Fund (222103810002); Major Project of Henan Province Industrial Research and Development Joint Fund in 2022 (225101610048); Top Talent Project of Henan Agricultural University (30500678)

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    Abstract:

    This study aims to identify the pre-harvest sprouting resistance in wheat germplasm resources and molecular markers for marker-assisted selection, ultimately obtaining excellent white grain wheat germplasm resources applicable in wheat breeding. These spikes of 222 wheat germplasm resources were tested for pre-harvest sprouting resistance, and the functional markers of eight anti-pre-harvest sprouting genes, including myb10DDFR-BVp1B3PM19-A1MFT-3AMFT-A2MKK3-AQSD1, were used for genotyping. Phenotypic identification results showed that there were significant differences in the relative sprouting percentage of 222 wheat germplasm resources. The relative sprouting percentage ranged from 0 to 1.15, and the average relative sprouting percentage was 0.73. 38 wheat materials were identified to be resistant to pre-harvest sprouting, including 9 white wheat, 27 red wheat and 2 black wheat. Correlation analysis between allele types and relative sprouting percentage showed that the relative sprouting percentage was significantly correlated with functional markers myb10DDFR-BVp1B3MFT-3A and MFT-A2, but not with PM19-A1MKK3-A and QSD1. These results indicated that molecular markers myb10DDFR-BVp1B3MFT-3A and MFT-A2 could be used for detection of pre-harvest sprouting resistance and marker-assisted breeding. Based on the phenotype and genotype results, nine white wheat germplasm resources with pre-harvest sprouting resistance were selected, including Yunong 914, Yunong 946, Fengdecunmai 30, Fangmai 5, Xumai 029, Lianmai 1901, Baofeng 1903, Zhengmai 829 and 13wang27-8, which could be used for genetic breeding and layout of wheat varieties with pre-harvest sprouting resistance.

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History
  • Received:November 13,2023
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  • Online: September 02,2024
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