Developing tomato breeding lines resistant to tomato yellow leaf curl virus

被引：38

作者：

Picó, B ^{[1
]}

Ferriol, M ^{[1
]}

Díez, M ^{[1
]}

Nuez, F ^{[1
]}

机构：

[1] Univ Politecn Valencia, Dept Biotechnol Genet, E-46022 Valencia, Spain

来源：

PLANT BREEDING | 1999年 / 118卷 / 06期

关键词：

Bemisia tabaci; Lycopersicon chilense; Lycopersicon esculentum; resistance breeding;

D O I：

10.1046/j.1439-0523.1999.00427.x

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Using controlled whitefly-mediated inoculation techniques, seven Lycopersicon chilense accessions, highly resistant to isolates of tomato yellow leaf curl virus (TYLCV) from Southern Europe, TYLCV-Sr, were selected. All exhibited similar levels of partial resistance, bring symptomless and with low levels of viral DNA accumulation. However, a differential response to infection was found in interspecific hybrids with tomato and inbred lines derived from different L. chilense accessions, allowing a precise discrimination among them. This selection procedure which considers the expression of the resistance genes in the tomato genetic background led to the selection of two highly resistant F-1 hybrids derived from L. chilense LA 1932 and LA 1938. A backcrossing programme was initiated, selecting for horticultural characteristics and TYLCV resistance, in field and controlled inoculation conditions. As a result of this programme, six advanced breeding lines (UPV Ty 1, 3, 6, 9, 17 and 53), exhibiting a high level of resistance to TYLCV-Sr, were obtained. Under high inoculum pressure conditions these lines suffered only 30-40% yield loss relative to non-infected control plants, and compared with 90-95% yield loss in susceptible controls. These lines also have horticultural characteristics appropriate for the fresh market tomato cultivation system in this area, and are a good base material for obtaining commercial hybrids highly resistant to different isolates of TYLCV.

引用

页码：537 / 542

页数：6

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