Annual ReportThe Board, 2007 - Lettuce |
Contents
INTRODUCTION 124569 | 1 |
SUMMARY OF THE 20072008 FISCAL YEAR | 7 |
LETTUCE BREEDING USDAARS | 17 |
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accessions accounting additional analysis aphids application assess bacteria beds block breeding lines CALIFORNIA LETTUCE RESEARCH coli coliform collected colonies Common vetch compared concentration conducted Contans continued Cooperative corky root crop crosses cultivars dahliae Davis detection determine developed disease downy mildew effective Endura evaluated experiment families feet field Figure fl oz/A four funds genes genetic Green greenhouse iceberg identified included increase indicate initial inoculated inoculum irrigation isolates leaf lettuce drop Lettuce Research Board levels mapping March markers material Mean membrane method minor negative numbers Objective observed operations parents pathogen plants plates plots populations positive potential present production Project race recovered recovery replicated represent resistance romaine Salinas samples screening seed selected significantly Silwet L77 soil sources species standard strains Table tested treatments trial University Verticillium wilt