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首页> 外文期刊>Revista rvore >Avalia??o de bactérias extremófilas facultativas na produ??o de fitomassa do híbrido 'urograndis' de eucalipto, a partir de sementes
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Avalia??o de bactérias extremófilas facultativas na produ??o de fitomassa do híbrido 'urograndis' de eucalipto, a partir de sementes

机译：评价exprophilic细菌可选择桉树杂交植物植物的生产中，来自种子

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Currently, Eucalyptus spp. is the tree that is most widely planted in Brazil, occupying 81.6% of planted forests. In 2009 its productivity was 44.2 m3 of eucalyptus with bark/hectare, generating about 46,850 direct jobs. Studies of beneficial bacteria, such as plant growth-promoting rhizobacteria (PGPRs), have been carried out for more than a century. The objective of this work was to evaluated strains of facultative extremophile bacteria that show potential in promoting eucalyptus growth. Seeds from the hybrid "urograndis" were microbiolized with a suspension of 109 UFC/mL from 10 bacterial strains, by means of shaking at 150 rpm in a rotating incubator, at 28 oC for 24 h. Next, they were planted in seed-trays and kept in the greenhouse. After 60 days seed germination and dry weight of the aerial part and roots were evaluated.. The dry weight of the aerial part revealed that all the bacterial strains produced gains when compared to the control, varying from 11.3 to 78.0%. However, strains UnB 1366, UnB 1371, UnB 1375, UnB 1370 and UnB 1373 were the ones that differed significantly. In contrast, the UnB 1368 strain (Bacillus sp.) stood out individually in promoting an increase of 130.0% in root biomass. These strains should be more thoroughly studied with regard to vehicle, combinations, formulations and others, so that they may be used in optimizing seedling production.
机译：目前，Eucalyptus SPP。是在巴西种植的树是最广泛种植的，占地81.6％的种植森林。 2009年，其生产力为树皮/公顷的桉树44.2立方米，直接就业机会产生约46,850名。对植物生长促进的relizobacteria（PGPRS）等有益细菌的研究已经进行了多世纪。这项工作的目的是评估表现出促进桉树生长的潜力的突出鼻咽细菌的菌株。通过在旋转培养箱中在旋转培养箱中以150rpm摇动，在28℃下以150rpm振动，从109ufc / ml的悬浮液中使用109ufc / ml的悬浮液。接下来，它们种植在种子托盘中并保持在温室中。在60天后进行种子萌发和空中部位和根的干重。空中部分的干重显示，与对照相比，所有细菌菌株产生增益，从11.3〜78.0％变化。然而，菌株UNB 1366，UNB 1371，UNB 1375，UNB 1370和UNB 1373是显着不同的。相反，UNB 1368菌株（Bacillus SP。）单独突出，在根生物质中增加130.0％。这些菌株应更彻底地研究车辆，组合，制剂等，使得它们可用于优化幼苗生产。

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