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首页> 外文期刊>Biotechnologie, Agronomie Societe et Environnement >Prospects of the potato seed production from vitropropagation in Tunisia.
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Prospects of the potato seed production from vitropropagation in Tunisia.

机译：突尼斯通过体外繁殖生产马铃薯种子的前景。

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The profitability of seed potato production in Tunisia has been evaluated at five different stages, as following: stage 1: in-vitro-propagation of plants. Stage 2: minitubers production under insect-proof greenhouse. The three other steps, are done in the field by successive muni-tubers in creases to obtain super-elite "SE", class elite "E" and "A" class tubers. Stage 3: first field multiplication to get class "SE" seeds. Stage 4: second field multiplication to get class "E" seeds. Stage 5: third field multiplication to get class "A" seeds. The production cost for stages 1 and 2 was, respectively, 0,253 TND and 0,182 TND. For stages 3, 4 and 5 the profitability depended on the multiplication rate in the field; downgrading rate; production cost; selling price. On the other hand, it would appear that the intervention of Groupement Interprofessionnel des Legumes (GIL) was crucial to the production process of class "SE", "E" and "A" seeds. The free of charge supply of minitubers, by GIL, to seed producers would make the production of class "SE" seeds profitable. While for classe "E" and "A", however, the profitability was guaranteed only when the rate of multiplication was equal to or higher than six. Compared to imported class "E" or "A" seeds, local seeds was less competitive. Further more, the intervention of GIL made local "E" seed competitive for all producers while the local class "A" seeds was competitive in the case of producers who got a rate of multiplication higher than four.
机译：已在五个不同阶段评估了突尼斯种薯生产的获利能力，如下所示：阶段1：植物的体外繁殖。第二阶段：在防虫温室内生产微型薯。其他三个步骤是在田间依次进行折皱的微型块茎完成的，以获得超级精英“ SE”，精英“ E”和“ A”级别的块茎。阶段3：首先进行字段乘法，以获得“ SE”类种子。阶段4：第二场乘法以获取“ E”类种子。阶段5：第三场相乘得到“ A”类种子。第1阶段和第2阶段的生产成本分别为0,253 TND和0,182 TND。对于第3、4和5阶段，获利能力取决于现场的倍增率。降级率;生产成本;售价。另一方面，似乎对豆类专业联合组织（GIL）的干预对于“ SE”，“ E”和“ A”类种子的生产过程至关重要。由GIL向种子生产者免费提供微型块茎将使“ SE”类种子的生产有利可图。但是，对于“ E”级和“ A”级，只有在乘积率等于或大于六时，才能保证获利。与进口的“ E”或“ A”类种子相比，本地种子的竞争力较低。此外，GIL的干预使本地“ E”种子对所有生产者都具有竞争力，而本地“ A”类种子对繁殖率高于4的生产者而言则具有竞争力。

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