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首页> 外文期刊>Forest Pathology >Survival and vitality of Gremmeniella abietina on Pinus sylvestris slash in northern Sweden.
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Survival and vitality of Gremmeniella abietina on Pinus sylvestris slash in northern Sweden.

机译：Gremmeniella abietina在瑞典北部的樟子松斜线上的生存和活力。

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摘要

Survival and vitality of Gremmeniella abietina on Pinus sylvestris slash was studied in northern Sweden during 2003 and 2004. Once a month between September 2003 and April 2004, two to three trees were cut down and debranched. Shoots with pycnidia were sampled at the felling date and then at every consecutive month. The percentage of germinated conidia from each shoot was calculated after 24, 48 and 72 h incubation. The vitality of G. abietina pycnidia in the slash remained high the whole period. Intact pycnidia were found on slash several months after the time of conidial sporulation, which indicates that new pycnidia may be produced on dead pine branches. Sampling of shoots from slash on 13- to 18-month-old clear-cuts showed conidial germination capacity as high as in pycnidia collected in fresh slash. Due to survival of G. abietina in slash it is recommended to postpone planting of P. sylvestris seedlings in northern boreal areas to the third vegetation period after sanitary clear-cuts..
机译：2003年至2004年期间，在瑞典北部研究了灰松柏在阔叶松柏上的存活和活力。从2003年9月至2004年4月，每月一次砍伐两到三棵树并进行分枝。在砍伐日期然后每隔一个月取样一次，以检测到带有伪孢子虫的芽。孵育24、48和72小时后，计算每个芽的分生孢子的百分比。在整个砍伐过程中，阿比蒂纳比格氏菌的活力仍然很高。在分生孢子孢子形成后的几个月内，在斜线处发现了完整的伪孢子虫，这表明在死去的松枝上可能会产生新的伪孢子虫。在13到18个月大的纯枝上对从枝条进行的枝条取样显示，分生孢子的萌发能力与在新鲜枝条中收集到的伪孢子一样高。由于山茱。（G。abietina）在砍伐中存活，建议将北部北方地区的樟子松幼苗推迟到卫生清理后的第三个植被期。

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