Scientists at EMR will use DNA markers called microsatellites, to produce individual profiles for each tree. This will help curators to verify the uniqueness of material in these collections. It will also assist in the identification of trees previously unnamed after traditional morphological comparisons. Detection of duplicates and incorrectly named accessions will enable streamlining of the UK's National Fruit Collection, help to reduce costs and allow duplicated plants to be replaced by other accessions.
EMR has already fingerprinted the first half of the 545 pears and 200 cherries of the National Fruit Collection. Two previously unknown pairs of identical pear accessions were identified as Vermont Beauty and Southworth, and Jean de Witte and Blickling, and scientists confirmed that another accession identified as Achan was in fact Autumn Bergamot. An unexpected finding was the discovery of a high level of triploid pears at 20%, compared to the 5-10% expected. This has implications for conventional breeding, for which triploid plants have limited use. Interestingly, of the first batch of 100 cherries fingerprinted, only 50% were found to be unique.
The collection is being verified using a set of reference microsatellite markers approved in collaboration with other international groups. The UK’s national collection will therefore be directly comparable with those from other countries.
On completion, examination of the diversity of material within the collection could help to detect significant gaps in varieties or groupings. In addition, through the application of more involved analyses, scientists could determine how distinct e.g. the perry, Asian and European (Pyrus) pears in the collection are from each other, or the extent to which apple and pear cultivars have captured the range of variation in wild relatives.
Emma-Jane Allen, Imperial College’s scientific curator of the collections said “Genetic fingerprinting of the apple and pears will allow a substantial increase in the efficiency of curating these collections. We also hope that the fingerprints will reveal information about the relationships between apple and pear varieties conserved in the National Fruit Collections.”
Ursula Twomey | alfa
Cascading use is also beneficial for wood
11.12.2017 | Technische Universität München
The future of crop engineering
08.12.2017 | Max-Planck-Institut für Biochemie
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
15.12.2017 | Power and Electrical Engineering
15.12.2017 | Materials Sciences
15.12.2017 | Life Sciences