Molecular Marker Screening of Tomato Germplasm for Root-knot Nematodes Resistance
March 4, 2011| |
Tomato (Solanum lycopersicum L.), an economically important vegetable, has been frequently savaged by root-knot nematodes causing production losses in Ghana. The use of effective nematicides have been banned due to their environmental and health risks. Previous studies have shown that the gene Mi found in tomatoes confers genetic resistance to root-knot nematodes. Thus, Y. Danso of Crops Research Institute (CSIR), Kumasi, Ghana and other scientists, conducted molecular screening on some tomato germplasm to detect markers of Mi.
Based on the results, the tomato cultivars VFNT, FLA 505-BL 1172, 2641A, "Adwoa Deede" and Terminator FI showed the marker for the homozygous resistant genotypes (Mi/Mi). The cultivars, Tima and 2644A showed both markers, corresponding to heterozygous resistant genotypes (Mi/mi). Twenty one (21) out of the 26 cultivars did not show any of the markers probably because of non-specificity at the primer-binding sites. Five (5) heterozygous individuals of the 6 resistant cultivars were found to be following the Hardy-Weinberg equlibrium in population genetics.
Read the abstract of this study at http://www.academicjournals.org/AJB/abstracts/abs2011/28Feb/Danso%20et%20al.htm.
| |
Biotech Updates is a weekly newsletter of ISAAA, a not-for-profit organization. It is distributed for free to over 22,000 subscribers worldwide to inform them about the key developments in biosciences, especially in biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
-
See more articles:
-
News from Around the World
- Global Wheat Rust Project Gets US$40 M Support
- Genome Tools to Improve Crop Performance
- Kenya to Start Planting Biotech Crops
- Strict Biosafety Law Stalls GM Maize Trials in Tanzania
- Purdue Scientist Develop Less Toxic Plant Growth Inhibitors
- Flood-tolerant Rice Plants Can Also Survive Drought
- Use Facts to Make Glyphosate and Glyphosate Resistant Crop Decisions
- ‘Bean-Gene' Project Launched in Canada
- China Investing Billions to Manage Drought
- Australian OGTR- Notification of License to Controlled Release of GM Cotton
- Impact Assessment of GMO of Plant Origin on Rat Progeny Devt in Three Generations
- Two Long-Term Programs on Wheat and Maize Granted by the French Stimulus Initiative
- New Postgrad Degree in Sustainable Agric and Food Security
-
Research Highlights
- Transgenic Maize Express Totivirus Antifungal Protein for Corn Smut Resistance
- Uniform Accumulation of Recombinant Miraculin in GE tomato Using E8 promoter
- Molecular Marker Screening of Tomato Germplasm for Root-knot Nematodes Resistance
-
Beyond Crop Biotech
- Animal Reproduction Research to Transform Cattle and Aquaculture Industries
-
Announcements
- ICBBS 2011: International Conference on Biotechnology and Biological Sciences
- ICBB 2011: International Conference on Bioinformatics and Biotechnology
- Brazilian Biosafety Congress
- ISTA Workshop on Quality Assurance in Seed Testing
- International Conference on Agric Intensification in Sub-Saharan Africa
- New Grant Program Available for Planting Related Research
- Network of Indian Agri-Business Incubation Conference
-
Resources
- The Impact of the EU Regulatory Constraint of Transgenic Crops on Farm Income
-
Read the latest: - Biotech Updates (December 4, 2024)
- Gene Editing Supplement (November 27, 2024)
- Gene Drive Supplement (February 22, 2023)
-
Subscribe to BU: - Share
- Tweet