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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (15): 37-42.doi: 10.11924/j.issn.1000-6850.casb19030077

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Tropical Waxy Sorghum Germplasm: Breeding and Improvement

Meng Yan1, Meng Xianzheng1, Chen Minju1(), Yuan Haibo1, Zhang Fujuan1, Guo Guangyu2, Zhou Shuai1, Sun Xiyun1   

  1. 1 Shangqiu Academy of Agricultural and Forestry Sciences, Shangqiu Henan 476000
    2 Suiyang District Agricultural Science Institute, Shangqiu City, Shangqiu Henan 476100
  • Received:2019-03-19 Revised:2019-04-23 Online:2020-05-25 Published:2020-05-21
  • Contact: Chen Minju E-mail:86255603@qq.com

Abstract:

The aim is to analyze the use value of tropical waxy resources during sorghum breeding, and the resources’ effect on sorghum heterosis. Taking the germplasms from Shangqiu Academy of Agricultural and Forestry Sciences as the materials, tropical waxy resources were introduced, and the stable sterile lines were bred. The agronomic traits were analyzed with variance analysis and correlation analysis. The results showed that the yield, grain weight and weight per ear of ‘M17A’ combination were significantly different from those of other combinations. The combination 8 had the highest yield per plot, which was 15.17 kg. The correlation coefficient between ear traits and yield was: grain weight > weight per ear > ear length > 1000-grain weight > axis length > shelling rate > cutin rate; the correlation coefficient between grain weight and yield was 0.957, which showed an extremely significant positive correlation, indicating that the germplasm with large ear and high seed setting rate should be selected during the sorghum high yield breeding. The starch content of ‘M17A’ was significantly different from that of other combinations, which meant that the sorghum starch content was controlled by genetic genes. Therefore, the material with large panicle type and low cutin rate should be selected for the utilization of tropical germplasm.

Key words: tropical, sorghum, germplasm breeding, improvement and utilization, waxy resource

CLC Number: