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Selection and Development of the Top Dying Tolerant Sundri (heritiera Fomes) Trees in the Sundarbans.

Dr. M. Masudur Rahman
Divisional Officer
Mangrove Silviculture Division, Bangladesh Forest Research Institute, Ministry of Environment and Forest, Mangrove Bhaban, Muzgunni, Khulna-9000

S.M.Hasnin
Senior Research Officer
Mangrove Silviculture Division, Bangladesh Forest Research Institute, Ministry of Environment and Forest, Mangrove Bhaban, Muzgunni, Khulna-9000

Dr.A.S.M.Helal Siddiqui
Senior Research Officer
Mangrove Silviculture Division, Bangladesh Forest Research Institute, Ministry of Environment and Forest, Mangrove Bhaban, Muzgunni, Khulna-9000

Abstract/ Executive Summary:

Sundri is the principal and dominant tree after which the forest is called Sundarbans. Actually the sundri trees are quiet fair, natural and economic which is tidally adapted. It is the major tree species constituting 64% of the growing stock followed by Gewa (16%). The sundri tree is affected by top dying disease tremendously. Forty numbers (10 nos. in each location) of healthy (disease free) sundari trees have been selected for development of pure line in the Sundarban. The average height, bole height and DBH of the selected healthy (disease free) sundari trees were 10.8m, 7.5m and 16.2cm respectively at Bholarpar (compt. No. 24) in the less saline zone. The average height, bole height and DBH of the selected healthy (disease free) sundari trees were 10.6m, 6.3m and 16.6cm respectively at Bojbaja (compt. No. 37) in the moderate saline zone. The average height, bole height and DBH of the selected healthy (disease free) sundari trees were 10.1m, 4.9m and 17.8cm respectively at Kalabogi (compt. No. 33) in the moderate saline zone. The average height, bole height and DBH of the selected healthy (disease free) sundari trees were 15.8m, 8.3m and 22.7cm respectively at Kalabogi Khal (compt. No. 32 in the moderate saline zone. The water salinity of Bholarpar (compt. No. 24), Bojbaja (compt. No. 37), Kalabogi (compt. No. 33) and Kalabogi Khal (compt. No. 32) were recorded 3ppt, 20ppt, 18ppt and 21ppt respectively in May, 2010. The soil pH of Bholarpar (compt. No. 24), Bojbaja (compt. No. 37), Kalabogi (compt. No. 33) and Kalabogi Khal (compt. No. 32) were 4.2, 5.4, 6.0 and 6.2 respectively. Inundation was regular in all the experimental sites. Siltation / erosion gauge have been placed in each location. Raised seedlings of selected sundari trees at three locations of the Sundarban have been planted. Flowering and fruiting behaviors of the selected trees have been observed and recorded. Nine thousand seedlings have been raised at Bogi and Dhangmari Research Stations for next year plantations. Germination of the seeds, survival and growth performance of the seedlings in the nursery have been recorded.

Keywords: Disease, Mangrove forest, Sundri, Sundarbans,Tree species,Topdying,

Location: Different locations of the Sundarbans.

Start Date: 01-07-2008

End Date: 30-06-2016

Program Area: Variety and Species

Commodity: Sundari

Objectives:

To develop a pure line of top dying tolerant sundri trees.

Methodology:

To overcome and gene conservation the following activities were done systematically since July 2008. Flowering and fruiting behaviors in the selected trees were observed. Data on soil pH, water salinity, light intensity, inundation and siltation in the selected sites were collected. Seeds from the selected trees were collected. also. Plantations were raised with selected sundri seedlings at three locations of the Sundarbans. It was raised seedlings at H/Q, Bogi and Dhangmari Research Stations for next year plantations. Observation on germination of the seeds, survival and growth performance of the seedlings in the nursery were maintained properly. Plantations were raised in the different locations in the Sundarbans, Data were collated.

Source of Information: Annual Research progress, BFRI, MSD,2013

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 15,00000.00

Total Budget (Tk.) : 15,00000.00

Achievement/Findings:

Forty numbers (10 nos. in each location) of healthy (disease free) sundri trees have been selected for development of pure line in the Sundarbans. The water salinity of Bholarpar (compt. No. 24), Bojbaja (compt. No. 37), Kalabogi (compt. No. 33) and Kalabogi Khal (compt. No. 32) were recorded 2ppt, 21ppt, 19ppt and 20ppt respectively in May, 2009. The soil pH of Bholarpar (compt. No. 24), Bojbaja (compt. No. 37), Kalabogi (compt. No. 33) and Kalabogi Khal (compt. No. 32) were 4.2, 5.4, 6.0 and 6.2 respectively. Inundation was regular in all the experimental sites. In the fresh water zone Surival % and growth performance is always better.

Knowledge Management: Report/Proceedings