Year 2016, Volume 62, Issue 4

Year : 2016
Volume : 62
Issue : 4
   
Authors : Shamima NASRIN, Mahmood HOSSAIN, S. M. Rubaiot ABDULLAH, Rabiul ALAM, Mohammad RAQIBUL ,Hasan SIDDIQUE, Sanjoy SAHA
Title : SALINITY INFLUENCE ON SURVIVAL, GROWTH AND NUTRIENT DISTRIBUTION IN DIFFERENT PARTS OF MILLETTIA PINNATA SEEDLINGS
Abstract : Millettia pinnata is a mangrove associate tree species in the Sundarbans and commonly used for soil stabilization along the embankment and riverbank of coastal area. This study examined the effect of different salinity levels on seedling survival, growth, nutrients (Nitrogen, Phosphorus, Potassium) and Sodium distribution in different parts (leaf, stem and root) as well as total chlorophyll and proline concentration in the leaves of Millettia pinnata seedlings. Survival and growth study was carried out in different saline treatments from 0 to 35 ppt and from 0 ppt to 25 ppt respectively at 5 ppt interval for six months. Highest survival (100%) was observed at 0 to 10 ppt salinity and then gradually decreased to 10% at 25 ppt salinity. No survival was observed at 30 and 35 ppt salinity. Biomass increment showed significantly negative correlation (r=-0.84) with salinity levels. Oven dried biomass increment was the highest (6.97 g/month) at 0 ppt salinity and gradually decreased to 0.75 g/month at 15 ppt salinity. Nitrogen and potassium concentration in different seedling parts and phosphorus in leaves showed significant negative correlation with salinity levels. However, sodium concentration in different parts showed significant positive correlation with salinity levels. Total chlorophyll concentration was the highest (0.62 mg/g) in the leaves of seedlings grown at 0 ppt and decreased to 0.29 mg/g at 25 ppt salinity. Highest proline concentration (6.88 µmoles/g) was measured at 25 ppt salinity and lowest (1.52 µmoles/g) at 0 ppt salinity
For citation : Nasrin S.,Hossain M., Abdullah R., Alam R., Raqibulm., Siddique H.,Saha S. (2016): Salinity influence on survival, growth and nutrient distribution in different parts of Millettia Pinnata seedlings Agriculture and Forestry, 62 (4): 161-173. DOI: 10.17707/AgricultForest.62.4.19
Keywords : Salinity, Growth, Millettia pinnata, Nutrient, Chlorophyll, Proline
   
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ISSN 0554-5579 (Printed)
ISSN 1800-9492 (Online)
DOI : 10.17707/AgricultForest

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