Identification of QTLs for red fruit firmness using the wild tomato species Solanum pennellii LA716 introgression lines

Shengbao Yang; Qinghui Yu; Baike Wang; Tao Yang; Ning Li; Yaping Tang; Patiguli Aisimutuola; Qiang Wang; Jian Xu; Jie Gao

doi:10.1111/pbr.12423

journal article Oct 28, 2016

Identification of QTLs for red fruit firmness using the wild tomato species Solanum pennellii LA716 introgression lines

Shengbao Yang Qinghui Yu

Baike Wang Tao Yang

Ning Li

Yaping Tang Patiguli Aisimutuola Qiang Wang

Jian Xu

Jie Gao

Plant Breeding Vol. 135 No. 6 pp. 728-734 · Wiley

View at Publisher Save 10.1111/pbr.12423

Abstract

AbstractThe introgression lines (ILs) of the wild tomato species Solanum pennellii have been widely used to identify genes related to yield, texture, disease resistance and stress tolerance. In addition to flavour, fruit firmness is an important evaluation index and essential trait indicating tomato fruit quality. Quantitative trait loci (QTL) for fruit firmness have been identified through hand squeezing and pericarp puncturing. However, these techniques hardly reveal the force value of the whole fruit suffering from rupture or deformation. In this study, S. pennellii ILs were used to identify QTLs related to fruit firmness through flat‐plate compression. Nine QTLs for enhancing and sixteen QTLs for decreasing fruit firmness were successfully identified. Compared with that of ‘M82’, the amount of QTLs that enhance fruit firmness increased by 8.76% to 21.00%, and the amount of QTLs that reduce fruit firmness decreased by −8.27% to −30.80%. The QTL Crf12a and Crf‐R‐7b is the strongest and weakest QTL, respectively, while they are very stable in all independent biological trials. Six QTLs should be further confirmed through open‐field trials.

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Details

Published: Oct 28, 2016
Vol/Issue: 135(6)
Pages: 728-734
License: View

Authors

S

Shengbao Yang

College of Forestry and Horticulture Xinjiang Agricultural University Urumqi 830052 China; Institute of Horticulture Crops Xinjiang Academy of Agricultural Sciences Urumqi 830091 China

Q

Qinghui Yu