Resistances to anthracnose <em>(Colletotrichum acutatum</em>) of <em>Capsicum</em> mature green and ripe fruit are controlled by a major dominant cluster of QTLs on chromosome P5 - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Scientia Horticulturae Année : 2015

Resistances to anthracnose (Colletotrichum acutatum) of Capsicum mature green and ripe fruit are controlled by a major dominant cluster of QTLs on chromosome P5

Résumé

Anthracnose (Colletotrichum spp.) is a serious disease worldwide in pepper (Capsicum) production. Inher-itance of resistance to Colletotrichum acutatum from a Capsicum chinense accession (PBC932) was studiedin a BC1population derived from a hybrid with Capsicum annuum line 77013 (susceptible) using a QTLanalysis method. Resistance test was performed on detached mature green and mature red fruit underlaboratory conditions by evaluated in disease incidence, true lesion diameter and overall lesion diameter.Based on a linkage map with 14 linkage groups, 385 markers (SSR, InDel and CAPS), 1310.2 cM in length,inclusive Composite Interval Mapping (ICIM) revealed main effect QTLs located in a close marker intervalon P5 chromosome for all fruit stages and resistance criteria, and four minor-effect QTLs only at greenmature stage. Identification of recombinant individuals suggested that resistance in green versus red fruitmay be controlled by distinct genes within the QTL interval on P5

Dates et versions

hal-02640275 , version 1 (28-05-2020)

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Citer

Chunying Sun, Sheng Li Mao, Zheng Haia Zhang, Alain Palloix, Li Hao Wang, et al.. Resistances to anthracnose (Colletotrichum acutatum) of Capsicum mature green and ripe fruit are controlled by a major dominant cluster of QTLs on chromosome P5. Scientia Horticulturae, 2015, 181, pp.81-88. ⟨10.1016/j.scienta.2014.10.033⟩. ⟨hal-02640275⟩
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