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首页> 外文期刊>Forest Ecology and Management >Effect of stock plant lighting on bulk vegetative propagation of hybrid larch (Larix X eurolepis Henry).
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Effect of stock plant lighting on bulk vegetative propagation of hybrid larch (Larix X eurolepis Henry).

机译：砧木光照对杂种落叶松（Larix X eurolepis Henry）的无性繁殖的影响。

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摘要

Bulk vegetative propagation through rooted cuttings is a way to enhance the number of plants produced by seeds of valuable batches of hybrid larch. Four experiments were conducted between 1992 and 1995 at research centres in central France (CEMAGREFat Nogent sur Vernisson, and INRA at Orleans) to investigate stock plant lighting management and its effects on the number of expected cuttings per plant and on rooting ability. A photosynthetic lighting complement (50 鎚ol s-1 m-2) was provided to stock plants between 05.00 and 23.00 when natural light intensity fell below 40 W m-2. It promoted the growth of stock plants and the number of cuttings collected, but it adversely affected the rooting percentage in the subsequent rooting of cuttings. The negative effect was stronger when light was applied at the end of the growing season. Experiments showed that photoperiodic lighting clearly reduced the rooting ability, both for stock plants raised in containers (in greenhouses or under white shaded tunnels) and for stock plants grown in a nursery soil under a white shading tunnel. A photosynthetic complement, such as photoperiodic stock plant lighting, is not, therefore, justified for larch bulk propagation in central France.
机译：通过生根的s插进行无性繁殖是增加有价值的杂种落叶松种子的种子所产生的植物数量的一种方法。在1992年至1995年之间，在法国中部的研究中心（CEMAGREFat Nogent sur Vernisson和INRA在奥尔良）进行了四个实验，以调查植物照明管理及其对单株预期插条数量和生根能力的影响。当自然光强度低于40 W m-2时，在05.00到23.00之间为植物提供光合光照补充剂（50锤酚s-1 m-2）。它促进了砧木的生长和收集的插条数量，但对随后插条生根的生根率产生了不利影响。在生长季节结束时应用光照会产生更大的负面影响。实验表明，光周期照明明显降低了生根能力，无论是在容器中（温室中或在白色阴影隧道下）饲养的砧木，还是在白色阴影隧道下的苗圃土壤中生长的砧木。因此，光合补充剂，例如光周期的植物照明，不适合在法国中部进行落叶松的大量繁殖。

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