›› 2019, Vol. 31 ›› Issue (12): 2025-2035.DOI: 10.3969/j.issn.1004-1524.2019.12.11

• Horticultural Science • Previous Articles     Next Articles

Analysis of combining ability and heredity for quantitative traits of 33 tomato inbred lines

WANG Xiaomin1,2,3,4, ZHAO Yufei1, YUAN Dongsheng1, LIU Peijun1, ZHENG Fushun1, HU Xinhua5, FU Jinjun5, GAO Yanming1,2,3,4, LI Jianshe1,2,3,4   

  1. 1. School of Agriculture, Ningxia University, Yinchuan 750021,China;
    2. Ningxia Modern Facility Horticulture Engineering Technology Research Center, Yinchuan 750021,China;
    3. Ningxia Facility Horticulture(Ningxia University)Technology Innovation Center, Yinchuan 750021,China;
    4. Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia, Yinchuan 750021,China;
    5. Ningxia Jufeng Seedlings Limited Liability Company, Yinchuan 750021,China
  • Received:2019-04-26 Online:2019-12-25 Published:2019-12-25

Abstract: In order to evaluate the combining ability and heredity of tomato inbred lines, 116 combinations of 33 tomato inbred lines were adopted by NC Ⅱ incomplete biserial hybridization, combining ability and heredity of 11 quantitative characters, such as the single inflorescence number, single fruit weight, fruit vertical diameter, fruit transverse diameter, fruit shape index, pedicel length, size of corky area around pedicel scar, size of pedicel suberification, hardness, soluble solids content and flesh thickness were analyzed in this study. The results showed that the size of corky area around pedicel scar, fruit vertical diameter, fruit transverse diameter, soluble solids content, single inflorescence number and single fruit weight were mainly controlled by additive effects of genes, which could be stably inherited to the offsprings. The flesh thickness, size of pedicel suberification, hardness, pedicel length and fruit shape index were mainly controlled by the non-additive effect of genes and should be utilized by heterosis breeding. The heritability of soluble solids content was high, and it could be stably inherited to the offsprings. The general heritabilities of single inflorescence fruit number, single fruit weight, fruit transverse diameter, pedicel length, size of pedicel scar, size of pedicel suberification, hardness and flesh thickness were higher, but the narrow heritabilities were lower, so they were suitable for hybrid advantage utilization; the heritabilities of fruit vertical diameter and fruit shape index were lower with poor selection effect. The relative effect value of the general combining abilities of the parents 60126, 60229, 60270, 60529, 60974 and 61227 were higher, the relative effect value of the special combining abilities of the following combinations, such as 60229×60478, 60480×60429, 60974×60478, 60977×60497, 60270×61011 and 60645×60478 were higher. These results would provide references for the parents selection and dominant hybrid combinations preparation of tomato in Ningxia.

Key words: tomato, quantitative trait, heredity, combining ability

CLC Number: