Early blight resistance in tomato: screening and genetic study

Early blight resistance in tomato: screening and genetic study Promotor: prof. dr. ir. P. Stam Hoogleraar in de Plantenveredeling Wageningen Univers...
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Early blight resistance in tomato: screening and genetic study

Promotor: prof. dr. ir. P. Stam Hoogleraar in de Plantenveredeling Wageningen Universiteit Co-promotor: Dr. ir. R.E. Voorrips Onderzoeker Plant Research International Promotiecommisie: prof. dr. ir. P.J.G.M. de Wit, Wageningen Universiteit prof. dr. R.F. Hoekstra, Wageningen Universiteit Drs. J. J.M. Lambalk, ENZA ZADEN, Enkhuizen prof. dr. ir. A.H.C. van Bruggen, Wageningen Universiteit Dit onderzoek is uitgevoerd binnen de onderzoekschool Production Ecology and Resource Conservation

Early blight resistance in tomato: screening and genetic study

Reni Chaerani

Proefschrift ter verkrijging van de graad van doctor op gezag van de rector magnificus van Wageningen Universiteit, Prof. dr. M.J. Kropff, in het openbaar te verdedigen op woensdag 8 februari 2006 des namiddags te vier uur in de Aula

CIP-DATA Koninklijke Bibliotheek, Den Haag Chaerani R (2006) Early blight resistance in tomato: screening and genetic study Ph.D. thesis, Wageningen University, the Netherlands – with summaries in English, Dutch and Bahasa Indonesia ISBN: 90-8504-355-7

Contents 7

Preface Chapter 1

Tomato early blight (Alternaria solani): the pathogen, genetics and breeding for resistance

11

Chapter 2

Assessment of early blight (Alternaria solani) resistance in tomato using a droplet inoculation method in glasshouse

31

Chapter 3

QTL identification for early blight resistance (Alternaria solani) in a Solanum lycopersicum × S. arcanum cross

45

Chapter 4

General discussion

61

References

67

Summary

75

Samenvatting (summary in Dutch)

77

Ringkasan (summary in Bahasa Indonesia)

79

Acknowledgements

81

Curriculum vitae

83

PE&RC Ph.D. education statement

85

6

Preface Tomato cultivation in Indonesia Tomato (Solanum lycopersicum L. [syn. Lycopersicon esculentum Mill.]) was taken to South-East Asia in the 17th century from Europe (Opẽna and van der Vossen 1993). In Indonesia it is the fourth most important vegetable after hot pepper, onions and potato (Asandhi and Sastrosiswojo 1988). Tomato is mostly destined for the local market, used fresh as salad or processed in the ketchup industry. A minor proportion is exported to regional countries. Tomato is cultivated in the open field in both lowland (

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