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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (5): 1000-1008.doi: 10.16420/j.issn.0513-353x.2022-0300

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

The Characteristics and Chloroplast Ultrastructure of Yellow Leaf Mutant chl234 in Eggplant

LI Shupei,*, ZHANG Ying,*, SHU Jinshuai, CHEN Yuhui, YANG Jinkun, CHEN Lulu, LIU Fuzhong()   

  1. State Key Laboratory of Vegetable Biobreeding,Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China
  • Received:2022-06-02 Revised:2023-01-16 Online:2023-05-25 Published:2023-05-31
  • Contact: LIU Fuzhong E-mail:lfzcaas@126.com

Abstract:

Yellow leaf eggplant mutant chl234 and its wild type were used as materials. chl234 exhibited a yellow-leaf phenotype from cotyledon stage and the true leaves exhibited yellow existed throughout the life cycle. Compared with wild type,chl234 had smaller cotyledon and delayed flowering,and there was no significant difference in the first flower node,plant growth trend,fruit size and seed size between chl234 and wild type. The chlorophyll content in chl234 leaves was significantly lower than that in wild type at the seeding stage,first flowering stage and fourth flowering stage. The net photosynthetic rate,stomatal conductance and transpiration rate of chl234 were significantly lower than that of wild type at the seedling stage,while the intercellular CO2 concentration was significantly higher than wild type. The net photosynthetic rate,transpiration rate and intercellular CO2 concentration was no significant difference between chl234 and wild type,while stomatal conductance was significantly lower than that of wild type at fourth flowering stage. chl234 had less grana lamellae stacked pile and irregular arrangement of base grains. The inheritance of the leaf color yellowing trait of chl234 using six genetic analysis populations showed that the leaf color yellowing trait was controlled by a recessive nuclear single gene.

Key words: eggplant, yellow leaf mutant, chlorophyll content, photosynthetic properties, chloroplast ultrastructure, genetic analysis

CLC Number: