Advanced backcross QTL analysis of a Lycopersicon esculentum x Lycopersicon parviflorum cross

被引:114
作者
Fulton, TM
Grandillo, S
Beck-Bunn, T
Fridman, E
Frampton, A
Lopez, J
Petiard, V
Uhlig, J
Zamir, D
Tanksley, SD
机构
[1] Cornell Univ, Dept Plant Breeding & Biometry, Ithaca, NY 14853 USA
[2] Res Inst Vegetable & Ornamental Plant Breeding, IMOF, CNR, I-80055 Naples, Italy
[3] Seminis Vegetable Seeds, Woodland, CA 95659 USA
[4] Nestle R&D Ctr SA, E-06080 Badajoz, Spain
[5] Francerco, F-37390 Tours, France
[6] Hebrew Univ Jerusalem, Fac Agr, Dept Field Crops, IL-76100 Rehovot, Israel
关键词
molecular breeding; germplasm utilization; L; parviflorum; quantitative trait loci; tomato; introgression;
D O I
10.1007/s001220051384
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Lycopersicon parviflorum is a sexually compatible, wild tomato species which has been largely unutilized in tomato breeding. The Advanced Backcross QTL (AB-QTL) strategy was used to explore this genome for QTLs affecting traits of agronomic importance in an interspecific cross between a tomato elite processing inbred, Lycopersicon esculentum E6203, and the wild species L. parviflorum (LA2133). A total of 170 BC2 plants were genotyped by means of 133 genetic markers (131 RFLPs; one PCR-based marker. 1-2, and one morphological marker, u, uniform ripening). Approximately 170 BC3 families were grown in replicated field trials, in California, Spain and Israel, and were scored for 30 horticultural traits. Significant putative QTLs were identified for all traits, for a total of 199 QTLs, ranging from 1 to 19 QTLs detected for each trait. For 19 (70%) traits (excluding traits for which effects of either direction are not necessarily favourable or unfavourable) at least one QTL was identified for which the L. parviflorum allele was associated with an agronomically favourable effect, despite the overall inferior phenotype of the wild species.
引用
收藏
页码:1025 / 1042
页数:18
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