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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (4): 754-764.doi: 10.16420/j.issn.0513-353x.2022-0056

• Research Papers • Previous Articles     Next Articles

Location and Analysis of Quantitative Trait Loci in Chinese Jujube Fruit

TANG Haixia1, PEI Guangying2, ZHANG Qiong1, WANG Zhongtang1,*()   

  1. 1. Shandong Institute of Pomology,Tai’an,Shandong 271000,China
    2. Shandong Fei County Fruit Tea Service Center,Linyi,Shandong 273400,China
  • Received:2022-09-23 Revised:2023-01-12 Online:2023-04-25 Published:2023-04-27
  • Contact: *(E-mail:sdgss213@163.com

Abstract:

The separation of ten fruit characters(single fruit weight,fruit longitudinal diameter,fruit diameter,fruit shape index,soluble solids content,total sugar content,total acid content,sugar-acid ratio,vitamin C content,edible rate)in F1 population of 103‘Dongzao’בJinsi 4’and quantitative trait loci were analyzed by a high-density molecular genetic linkage map. Ten characters were distributed continuously on chromosomes,being typical quantitative characters. A total of 157 QTLs related to ten fruit traits were detected. Among these QTLs,44 were associated with the fruit weight,16 related to fruit diameter,36 associated with fruit longitudinal diameter and nine related to fruit shape index. The other QTLs were related to fruit quality,including 11 QTLs related to soluble solids,13 QTLs related to vitamin C,three QTLs related to total sugar,eight QTLs related to total acid and four QTLs related to sugar-acid ratio. Besides,there were 13 QTLs related to edible rate. The range of LOD for each QTL was 2.65-6.25,which can explain 15.60%-31.90% of phenotypic variation. One hundred and fifty-seven QTLs were distributed in ten linkage groups of linkage map,among which,27 loci in four linkage groups were linked with two to three phenotypes at the same time. The overlap of QTL mapping for different phenotypes suggested that some genes may be pleiotropic on the control of fruit traits.

Key words: Chinese jujube, fruit character, correlation, quantitative trait locus

CLC Number: