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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (3): 646-654.doi: 10.16420/j.issn.0513-353x.2024-0351

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

The Quantitative Classification of Flower Color Phenotype and Genetic Study for Population Flower Color in Marigold

LÜ Guifang1, ZANG Yunping2, TAO Zhengguo3, LIU Cuicui1, ZHANG Huali4, BAO Manzhu1, HE Yanhong1,**()   

  1. 1 National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops,College of Horticulture and Forestry Sciences,Huazhong Agricultural University,Wuhan 430070,China
    2 Yunnan Lidaer Biological Technology Co. LTD,Wen Shan,Yunnan 663100,China
    3 Guangzhou Lidaer Biotechnology Co. LTD,Guangzhou 510663,China
    4 Beijing Academy of Forestry and Landscape Architecture,Beijing 100102,China
  • Received:2024-06-03 Revised:2024-12-13 Online:2025-03-25 Published:2025-03-25
  • Contact: HE Yanhong

Abstract:

In order to classify the flower color of marigold and reveal the genetic principle,the 46 marigold resources and a 390-individual F2 population segregating for S5(orange)and MT(white)were used as experimental materials. The generating brightness value L*,redness value a*,and yellowness value b* were further clustered and submitted to genetic analyses. Based on the clustering results of the L*a* and b* values,46 marigold resources were categorized into five distinct color groups: white,light yellow,yellow,orange-yellow and orange. Each group exhibited concentrated and distinct parameter distribution. Moreover,the L*a* and b* values of the 390 individuals in the F2 population displayed continuous distribution and broad segregation. Flower color of the population adhered to the inheritance pattern of quantitative trait governed by a major gene and multiple secondary genes,and the orange color exhibited incomplete dominance over the white color.

Key words: marigold, flower color, colorimeter, quantitative classification, genetic analysis