FOOD SCIENCE ›› 2021, Vol. 42 ›› Issue (23): 18-26.doi: 10.7506/spkx1002-6630-20201117-180

• Basic Research • Previous Articles     Next Articles

Changes of Fruit Quality in Five Different Genotypes of Pepper (Capsicum annuum L.) during Development

LIU Zhoubin, MAO Lianzhen, HUANG Yu, DAI Yunhua, LI Ziyu, OU Lijun   

  1. (Engineering Research Center for Horticultural Crop Germplasm Creation and New Variety Breeding, Ministry of Education, Key Laboratory for Vegetable Biology of Hunan Province, College of Horticulture, Hunan Agricultural University, Changsha 410128, China)
  • Online:2021-12-15 Published:2021-12-29

Abstract: Fruit development of hot pepper is a complex genetic process, and the change of fruit quality is a key problem. In this study, the pattern of fruit quality change in five genotypes of pepper including the hot pepper cultivars ‘SJ11-3’ (screw-shaped), ‘06g19-1-1-1’ (short caprine horn-shaped), ‘CJ14-11-2-5-1’ (Chaotian) and ‘L2016-61’ (linear) and the lantern-shaped sweet pepper cultivar ‘THNX143’ was investigated at four different stage of development. The results showed that the contents of soluble sugar, fructose, sucrose, glucose, soluble protein, free amino acids, vitamin C (VC) and vitamin E (VE), capsanthin, capsaicin and lignin but not cellulose and hemicellulose generally increased to different extents with fruit development. At the transition from the green-ripe to color-turning stage, the pepper cultivars showed the greatest changes in quality traits among all developmental stages, and the contents of fructose, sucrose, glucose, total soluble sugar, soluble protein, free amino acids and VC substantially increased. Correlation analysis illustrated that the contents of cellulose and hemicellulose were negatively correlated with other quality traits, which were positively correlated with each other. The quality of the five genotypes at the green-ripe and red-ripe stages was comprehensively evaluated by membership function values analysis, revealing that the scores were ranked as follows: ‘CJ14-11-2-5-1’ > ‘SJ11-3’ > ‘THNX143’ > ‘06g19-1-1-1’ > ‘L2016-61’ for the green-ripe stage, and ‘SJ11-3’ > ‘CJ14-11-2-5-1’ > ‘THNX143’ > ‘06g19-1-1-1’ > ‘L2016-61’ for the red-ripe stage. This study may provide a basis for future studies on the formation mechanism of pepper fruit quality and for breeding for improved quality.

Key words: pepper; genotype; fruit; development; quality

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