ISHS Acta Horticulturae 623: XXVI International Horticultural Congress: Plant Genetic Resources, The Fabric of Horticulture's Future
MALUS GERMPLASM FROM ASIA AND ITS EVALUATION AT THE GERMAN FRUIT GENEBANK |
| Authors: | M. Geibel, B. Hohlfeld |
| Keywords: | Malus sieversii, Kazakhstan, China, diversity, plant resistance, apple wild species |
| Abstract:
The German Fruit Genebank at Dresden-Pillnitz has one of the largest ex-situ collections of Malus-wild species in the world hosting about 350 accessions of nearly all Malus species. In recent years the work was focused on new material from different collection trips. More than 1000 seedlings from 35 offspring of Malus sieversii collected by Forsline et al. during several trips to Kazakhstan in the last decade are broadly characterized by morphological (plant growth, leaves, fruits) and phenological characters as well as evaluated for resistance to Venturia inaequalis and Podosphaeria leucotricha. The material shows a broad diversity not only between different offsprings but also within several offsprings of open pollinated trees. The combination of resistance and interesting fruit characters offers new germplasm for the future fruit breeding. About 7000 seeds from 55 accessions as well as 163 scions from 28 accession of Malus hupehensis, Malus kansuensis, Malus prattii, Malus sieboldii, Malus transitoria and Malus toringoides were collected in 2001 during a German-Chinese Malus expedition (Geibel, Fritsch, Zhou, Cheng, Deng) to 6 sites of the Chinese provinces Sichuan and Chongqing. There is a high morphological diversity in the original populations as well as in the first seedlings. New resistances and attractive ornamental traits are expected. | |
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