Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (27): 45-52.doi: 10.11924/j.issn.1000-6850.casb2021-0294

Special Issue: 资源与环境

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Excellent Beta vulgaris Germplasm Resources: Screening and Evaluation

Chen Li1,2,3(), Zhao Chunlei1,2,3, Li Yanli1,2,3, Wang Xi1,2,3(), Cui Ping1,2,3   

  1. 1College of Advanced Agriculture and Ecological Environment of Heilongjiang University/Sugar Beet Research Institute of Chinese Academy of Agricultural Sciences, Harbin 150080
    2The Key Laboratory of Sugar Beet Genetic Breeding, Colleges of Heilongjiang Province/Sugar beet Engineering Research Center of Heilongjiang Province, Harbin 150080
    3National Sugar Crops Improvement Center/Key Laboratory of North Sugar Crop Resource and Utilization, Chinese Academy of Agricultural Sciences, Harbin 150080
  • Received:2021-03-22 Revised:2021-05-13 Online:2021-09-25 Published:2021-10-28
  • Contact: Wang Xi E-mail:caaschenli@163.com;lagow@163.com

Abstract:

This study aims at screening and evaluating excellent Beta vulgaris (sugar beet) germplasms, and providing reliable information for their scientific application in breeding. 277 sugar beet germplasms were divided based on eight main traits including root yield, sugar content, harmful non-sugar substances and main diseases’ resistance. The germplasms were screened and evaluated. 37 high yield type germplasms with beet yield over 52 t/hm2 were screened out, as well as 88 high sugar type germplasms with sugar content over 17% were selected, out of which there were 4 high-yield and high-sugar ones, 21 high-yield and medium-sugar ones and 72 medium-yield and high-sugar ones. Harmful non-sugar substances of these germplasms were analyzed, resulted in 25 germplasms of low potassium (K) content (less than 3.79 mmol/100g), 96 of low sodium (Na) (less than 2.00 mmol/100g), and 49 of low α-nitrogen (α-N) (less than 4.76 mmol/100g). Among these germplasms, there were 4 with low content in both K and Na, 4 of low K and α-N content, 20 of low Na and α-N content, and 3 germplasms which were low in all the three harmful non-sugar substances. 10 germplasms were found to be highly resistant to Cercospora leaf spot (CLS) and moderately resistant to damping-off, 5 were highly resistant to CLS and resistant to root rot, 14 were resistant to CLS and moderately resistant to damping-off, 5 were resistant to both CLS and root rot, and 3 were resistant to CLS and moderately resistant to root rot. These results suggest that among current sugar beet germplasms, normal or high yield type ones are insufficient, while high sugar type ones are abundant; germplasms are sufficient in CLS resistance, while inadequate in damping-off and root rot resistance, and with flat resistant levels.

Key words: Beta vulgaris (sugar beet), excellent germplasm, screening, evaluation, root yield, sugar content, harmful non-sugar substances, disease resistance

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