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Home > Archive>Volume 25, Issue 4, 2024 >612-621. DOI:10.13430/j.cnki.jpgr.20230923001
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Identification of Nuclear Male Sterile Material GMS702AB in Pepper
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Affiliation:

1.College of Agriculture， Anhui Science and Technology University ， Fengyang 233100;2.Institute of Horticulture， Anhui Academy of Agricultural Sciences / Anhui Provincial Key Laboratory for Germplasm Resources Creation & High-Efficiency Cultivation of Horticultural Crops/Key Laboratory of Germplasm Creation and Utilization of Horticultural Crops， Ministry of Agriculture and Rural Affairs (Co-comstruction by Ministry and Province)， Hefei 230031;3.College of Horticulture， Anhui Agricultural University， Hefei 230036

Fund Project:

Foundation projects： China Agriculture Research System of MOF and MARA（CARS-23-G40，CARS-23-G49）；The National Key Research and Development Program （ 2023YFD1201500）； The Second Level Youth Development Fund from Anhui Academy of Agricultural Sciences （QNYC-202121）；Important Science & Technology Specific Projects of Anhui Province（202203a06020030）； The Anhui Province Vegetable Industry Technology System （Anhui Agricultural Science Letter ［2021］ No.711）； Anhui Province Improved Variety Joint Research Project

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    Abstract:

    This study identified a nuclear male sterile pepper line showing male sterility and parthenocarpy characteristics， and the agronomic traits and parthenocarpy fruit setting rate of the material were determined， and the parthenocarpy of the sterile line at different developmental stages and the parthenocarpy of the fertile line were determined for endogenous hormones. In addition， the genetic segregation of F2 population was analyzed by field identification and microscopic examination， and the fertility segregation ratio of the population was analyzed by using the molecular markers developed by pepper nuclear male sterile genes ms-3， msw， ms， msms and msc-1.The results showed the vertical and horizontal diameters of the parthenocarpy fruit of the sterile line were larger， and the fruit setting rate of the fertile line and the sterile line was significantly different. The fruit setting rate of the fertile line was 22 %， and the fruit setting rate of the sterile line was 43%. The GA4 （gibberellin） content in the parthenocarpic fruit of the sterile line in different periods was significantly higher than that of the fertile line. There are 97 fertile lines and 30 sterile lines in the F2 population，with a separation ratio of 3.23 ： 1，which is consistent with the Mendelian inheritance law. It showsd that its fertility was controlled by a recessive single gene. We named the nuclear male sterile line of pepper as GMS702AB. This study provides a new nuclear male sterile line valuable in pepper breeding and seed production.

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History
  • Received:September 23,2023
  • Revised:December 13,2023
  • Online: April 29,2024
  • Published: April 16,2024
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