Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6407079 | Scientia Horticulturae | 2015 | 8 Pages |
Abstract
Anthracnose (Colletotrichum spp.) is a serious disease worldwide in pepper (Capsicum) production. Inheritance of resistance to Colletotrichum acutatum from a Capsicum chinense accession (PBC932) was studied in a BC1 population derived from a hybrid with Capsicum annuum line 77013 (susceptible) using a QTL analysis method. Resistance test was performed on detached mature green and mature red fruit under laboratory 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), 1310.2Â cM in length, inclusive Composite Interval Mapping (ICIM) revealed main effect QTLs located in a close marker interval on P5 chromosome for all fruit stages and resistance criteria, and four minor-effect QTLs only at green mature stage. Identification of recombinant individuals suggested that resistance in green versus red fruit may be controlled by distinct genes within the QTL interval on P5.
Related Topics
Life Sciences
Agricultural and Biological Sciences
Horticulture
Authors
Sun ChunYing, Mao Sheng Li, Zhang Zheng Hai, Palloix Alain, Wang Li Hao, Zhang Bao Xi,