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| Título : | Some documented abnormalities of tissue culture-derived date palms and their economical impact on the growers revenue |
| Autor : | Aaouine, M., Institut Agronomique et Veterinaire Hassan II, Agadir (Maroc) |
| Fecha de publicación : | 2005 |
| Resumen : | The present needs for planting material in the Arab world, estimated at more than 45 million trees, can be satisfied only by the use of in vitro techniques using either somatic embryogenesis or organogenesis techniques. Callus regeneration followed by the induction of somatic embryogenesis, plant regeneration and acclimatization to ex vitro controlled environment was first achieved with the date palm. However, the use of callus in masspropagation often results in genetic variation in fruit quality, disease resistance and other morphological and horticultural characters with great economic impact on the growers. For this reason, an alternate system of regeneration has been developed via organogenesis. The author used such method at large scale to mass propagate date palm with hundreds of thousands of plants in the field and tens of thousands of them already bearing fruits with no genetic variation for all the genotypes produced. Thus, while no differences have been observed in the ease of field establishment of the plants obtained by the two techniques, great differences do exist in terms of multiplication rate, of the time required to produce salable plants, of true-to-typeness, and of production cost. Because of the high price of the date palm vitroplants, because it takes many years for such plants to come into production, because of the high investment required to establish a date palm orchard, because of the low planting density used for the date palm, and because of the economical impact the off-types can have on the revenue of the growers, true-to-typeness is of prime importance. In this presentation, the documented abnormalities of tissue culture-derived date palms that have been observed in many countries and the extremely severe economical impact they can have on the growers' revenue will be presented. |
| License: | http://andzoa.ma/fr |
| URI : | http://webagris.inra.org.ma/doc/ouvrages/truetype....
http://localhost:8080/dspace/handle/0/2844 |
| Aparece en las colecciones: | Fonds Documentaire
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