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首页> 外文期刊>Indian Journal of Forestry >Regeneration status and identification of heart rot disease of Pasur (Xylocarpus mekongensis) tree in the sundarbans of Bangladesh.
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Regeneration status and identification of heart rot disease of Pasur (Xylocarpus mekongensis) tree in the sundarbans of Bangladesh.

机译：孟加拉国sundarbans中Pasur（Xylocarpus mekongensis）树的再生状况和心腐病鉴定。

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Regeneration status differs place to place and species to species in the Sandaracs. It depends on the different ecological conditions of the Sundarbans. The locations are Baniakhali, Chunkuri, Kalabogi, Kasiabad, Bojboja and Supati. Number of trees, seedlings up to 3 years and saplings above 3 years of all major species were recorded in each plot. The highest regeneration were recorded at Baniakhali 76997 per/ha, 37333 per/ha at Supati and lowest at Chunkuri 34666 per/ha. Pasur (Xylocarpus mekongensis) is a valuable timber yielding and highly useful tree species in the Sundarbans. It has great commercial value. It is found mainly in the saline areas on the North-Western part of the Sundarbans in association with other mangrove species. Pasur, a commercially valuable deciduous multipurpose tree species is affected by heart rot problem. As a result it is characterized by the gradual death of the crown starting first with small twigs and then gradually larger branches die and lignin portion of the stem becomes useless. Heart rot is generally regarded as a condition locally known as "dhor.". The fruit body, gall and cankers are developed on the different portion of the standing trees. It was observed and enumerated heart rot infestation status of different locations in the Sundarbans. It is affected (Less than 50% top dead and more than 50% top dead or heart rot (Dhor observed)) severely at Kalabogy, Baniakhali and Bozbosa are heavily affected in the moderately saline water zone. The result shows that the percentage is 64%, 62% and 60% respectively. Then followed by Kasiabad 54% and Chunkuri 48%. Very low amount of trees are affected at Supati covering 17% in the fresh water zone of the Sundarbans. The factors which causing the diseases are very difficult to identify. The International Mycological Institute, UK, confirmed two fungal pathogens. They identified two fungal pathogens for causal organism namely Phaenerochaete subglobosa and Schizophyllum commune and locally identidied Ganoderma applanatum. But some biotic and abiotic factors are responsible for the causes. The wood loss becomes a very high rate which shall impact the total loss of economy and the Sundarbans ecosystem. So, to overcome the disorder and disease special monitoring, care, multi disciplinary research and management system are to be required to formulate and eradicate the problem in the Sundarbans.
机译：桑达拉奇人的再生状态因地而异。这取决于Sundarbans的不同生态条件。这些地点是Baniakhali，Chunkuri，Kalabogi，Kasiabad，Bojboja和Supati。在每个样地中记录了所有主要树种的树木，不超过3年的幼苗和不超过3年的幼树的数量。记录的最高再生量为Baniakhali 76997 /公顷，Supati 37333 /公顷和Chunkuri 34666 /公顷。帕苏（Xylocarpus mekongensis）是一种有价值的木材，在苏达班人中非常有用。具有很大的商业价值。它主要与其他红树林物种一起发现在苏达班西北部的盐碱地区。 Pasur，一种具有商业价值的落叶多用途树种，受腐烂问题的影响。结果，它的特征是冠的逐渐死亡，首先从小树枝开始，然后逐渐逐渐变大，树枝枯死，茎的木质素部分变得无用。腐烂通常被认为是当地称为“ dhor”的病症。在立木的不同部分上形成了子实体，胆和can。观察到并枚举了桑达尔班地区不同地点的腐烂病状态。在卡拉博吉，Baniakhali和Bozbosa受到严重影响（上死率低于50％，上死率或心腐病超过50％（观察到Dhor））在中度咸水区受到严重影响。结果表明，该百分比分别为64％，62％和60％。然后是Kasiabad 54％和Chunkuri 48％。 Supati的极少量树木受到影响，在Sundarbans的淡水区中占17％。导致疾病的因素很难确定。英国国际真菌学研究所证实了两种真菌病原体。他们确定了两种致病生物的真菌病原体，即Phaenerochaete subglobosa和Schizophyllum commune，以及当地鉴定的灵芝。但是，某些生物和非生物因素是造成这种情况的原因。木材损失率很高，这将影响经济和Sundarbans生态系统的总损失。因此，为了克服疾病和疾病的特殊监测，护理，多学科研究和管理系统，需要制定和根除苏达班地区的问题。

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