Download or read book Evaluation of Methods for Assessing Resistance of Cacao Theobroma Cacao L Cultivars and Hybrids to Phytophthora Palmivora Butler Butler written by J. S. Lawrence and published by . This book was released on 1978 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of methods for assessing resistance of cacao Theobroma cacao L cultivars and hybrids to Phytophora palmivora Butler Butler written by J. S. Lawrence and published by . This book was released on 1978 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Methods for Assessing Resistance of Cacao Theobroma Cacao L Cultivars and Hybrids to Phytophthora Palmirova Butler Butler written by J.S. Lawrence and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Improvement of Cocoa Tree Resistance to Phytophthora Diseases written by Christian Cilas and published by Editions Quae. This book was released on 2004 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main purpose of the overview presented in this book is to provide the international community with knowledge and tools that can be used to breed cocoa trees with greater resistance to Phytophthora. It covers pathogen diversity, epidemiological knowledge, the genetic parameters of resistance observed in the field, and practical breeding aspects. The relevance of different screening tests involving artificial inoculations and the use of molecular markers for the selection of resistant material are widely covered.

Download or read book Evaluation of Methods for Assessing Resistance of Cacao Theobroma Cacao L Cultivars and Hybrids to Phytophthora written by J. S. Lawrence and published by . This book was released on 1978 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was conducted to select or develop a rapid and easy but reliable standardized inoculation method for preliminary screening of cacao for resistance to P. palmivora. Previously published methods and various modifications of some of them were examined using the same cacaocultivars and the same P. palmivora isolate throughout. Results from these methods were compared with each other and with data of natural infection in the field. Screening methods examined were: 1)Inoculation of attached pods using zoospore suspension without wounding or mixed mycelial-sporangial suspension with and without wounding, 2) Inoculationof detached pods using zoospore suspension with and without wounding, 3) Inoculation of blocks of pod pericarp tissue with zoosporesuspension, 4) Inoculation with mycelium-agar discs of seedling-stems and branches on the tree, 5) Inoculation of attached leaves with mycelium-agar disc or zoospore suspension, 6) Inoculation of seedling rootswith zoospore suspension, 7) Inoculation of germinated seeds with zoospore suspension or mycelial-sporangial suspension. Methods varied in the degree with they differentiated between resistant and susceptible cultivar reactions, and in consistency over replicated tests. However, the most resistant cultivars (Pound 7, Scavina 6, Scavina 12 and Catongo) were graded as resistant in most methods. The most reliable screening method for use with fruiting trees was point-inoculation of unwounded attached pods using zoospore suspension and recording percentage.

Download or read book Cacao Diseases written by Bryan A. Bailey and published by Springer. This book was released on 2016-02-22 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the current state of knowledge concerning cacao pathogens and methods for their management. Topics discussed include the history, biology and genetic diversity of Moniliophthora species (which cause witches’ broom and frosty pod rot) and Phytophthora species (which cause black pod rot) that cause diseases resulting in major losses to cacao production. Emerging pathogens such as Cacao swollen shoot virus and Ceratobasidium theobromae (which causes vascular streak dieback) are also discussed in detail, along with many pathogens of significant local concern. Most of these pathogens represent major risks to global cacao production should they expand into new areas, breaking out of their current limited distributions. By considering cacao diseases as a group, similarities in the available tools and techniques used in their management become apparent, as do their limitations. Gaps in our current knowledge of cacao pathogens and the management of the diseases they cause are detailed, and suggestions for future research directions are provided. This insight allows readers to consider cacao disease threats from a more comprehensive, global perspective and paves the way for an improved synergy of efforts between the various research programs, agencies, and industries, both private and public, with vested interests in cacao production, and cacao farmers.

Download or read book Cocoa Pest and Disease Management in Southeast Asia and Australasia written by Peter J. Keane and published by Food & Agriculture Org.. This book was released on 1992 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tropical Plant Breeding written by A. Charrier and published by Editions Quae. This book was released on 2001 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Important advances in tropical plant breeding achieved by French research teams of Cirad, Inra and Ird, in collaboration with counterpart staff in tropical countries, are reviewed in the present publication. All 24 chapters focus on different plants, and include: in-depth analysis of trait diversity in cultivated forms and links with related wild species; overviews of breeding techniques and biotechnological innovations utilized by breeders; assessment of genetic progress, based on examples from varietal improvement and extension programmes.

Download or read book Revista Theobroma written by and published by . This book was released on 1978 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Papua New Guinea Journal of Agriculture Forestry and Fisheries written by and published by . This book was released on 1984 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Global Approaches to Cocoa Germplasm Utilization and Conservation written by A. B. Eskes and published by Bioversity International. This book was released on 2006 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Indonesian Journal of Crop Science written by and published by . This book was released on 1986 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts on Tropical Agriculture written by and published by . This book was released on 1980 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Review of Plant Pathology written by and published by . This book was released on 1980 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book FAO Plant Production and Protection Papers written by and published by . This book was released on 1976 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Resistance in Cacao Theobroma Cacao L to Phytophthora Palmivora Butler Butler written by Edward Clenon Sitapai and published by . This book was released on 1989 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Papua and New Guinea Agricultural Gazette written by and published by . This book was released on 1980 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: