Cross Compatibility Analysis to Identify Suitable Parents of Tagetes erecta and T. patula for Heterotic Hybrid Breeding

Authors

  • Huali ZHANG Beijing Institute of Landscape and Architecture, Beijing Key Lab of Green Plant Breeding, No.7 Huajiadi, Chaoyang District, Beijing (CN)
  • Haibo XIN Beijing Institute of Landscape and Architecture, Beijing Key Lab of Green Plant Breeding, No.7 Huajiadi, Chaoyang District, Beijing (CN)
  • Richen CONG Beijing Institute of Landscape and Architecture, Beijing Key Lab of Green Plant Breeding, No.7 Huajiadi, Chaoyang District, Beijing (CN)
  • Zijing LI Beijing Institute of Landscape and Architecture, Beijing Key Lab of Green Plant Breeding, No.7 Huajiadi, Chaoyang District, Beijing (CN)
  • Lina SONG Beijing Institute of Landscape and Architecture, Beijing Key Lab of Green Plant Breeding, No.7 Huajiadi, Chaoyang District, Beijing (CN)
  • Zunzheng WEI Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing Engineering Technology Research Center of Functional Floriculture, Zhanghua Road No. 50, Haidian District, Beijing (CN)

DOI:

https://doi.org/10.15835/nbha47311388

Keywords:

heterosis; interspecific hybridization; Tagetes erecta; T. patula

Abstract

Seven interspecific crosses of Tagetes erecta × T. patula were conducted in this study. The cross compatibility index, seed setting rate, germination rate, phenotype, ploidy level, heterosis over male parent and field performance were tested. The results showed that different cross compatibility indices of Tagetes vary greatly, from 10.44~114.41, which is far less than that of the intraspecific hybridization S-121 × I-506 index. The seed setting rate of each cross ranged from 15.67% to 49.0%, and the cross S-121 × TP-512 scored the highest seed setting rate, which was higher than that of the intraspecific cross S-121 × I-506 (35.85%). Compared with the male parent, F1 has higher plant height, wider crown width, larger flower diameter and more ray florets and earlier bloom with two exceptions. The S-121 of T. erecta was diploid. All of the male parents of T. patula were tetraploids, and the combinations were triploids. The traits of plant height, plant width, flower size and number of ray florets showed positive heterosis over the male parents, and the days leading to flowering showed both positive and negative ones. Finally, S-121 × TP-379 and S-121 × TP-512 were selected as the two best combinations. This study confirmed that the two species of marigold could be crossed for better F1 varieties with improved performance.

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Zhang et al., 2019. Identify Suitable Parents of Tagetes erecta and T. patula for Heterotic Hybrid Breeding

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Published

2019-04-17

How to Cite

ZHANG, H., XIN, H., CONG, R., LI, Z., SONG, L., & WEI, Z. (2019). Cross Compatibility Analysis to Identify Suitable Parents of Tagetes erecta and T. patula for Heterotic Hybrid Breeding. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 47(3), 676–682. https://doi.org/10.15835/nbha47311388

Issue

Vol. 47 No. 3 (2019)

Section

Research Articles
CITATION
DOI: 10.15835/nbha47311388

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Copyright (c) 2019 Huali ZHANG, Haibo XIN, Richen CONG, Zijing LI, Lina SONG, Zunzheng WEI

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