scholarly journals Alleviation of arsenic accumulation in rice by applying silicon-rich rice husk residues in Bangladesh soil

2021 ◽  
Vol 56 (3) ◽  
pp. 195-206
Author(s):  
A Mamud ◽  
B Saha ◽  
SA Hossain ◽  
MTA Chowdhury
Keyword(s):  
Oryza Sativa ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
The Holocene ◽  
Arsenic Accumulation ◽  
Calcium Phosphorus ◽  
Boro Rice ◽  
Different Soils

While the accumulation of arsenic in rice (Oryza sativa L.) has been highlighted as a major concern in Bangladesh, sustainable measures are critically needed to reduce the uptake of arsenic by rice plants. In the present study, a pot-experiment was conducted using a Boro rice variety (BRRI dhan-29) in two geomorphologically different soils from Holocene floodplains and Pleistocene terraces, in which silicon-rich fresh rice husk (FRH) and rice husk ash (RHA) were applied, as silicon fertilisers, in the soils at the rate of 1% (w/w) of rice residue:soil.In the Holocene floodplain soils, the application of FRH was found to decrease arsenic in grain, husk and straw by 42, 56 and 51%, respectively, whereas the soil incorporation of RHA decreased arsenic in grain, husk and straw by 26, 37.5 and 36%, respectively. In the Pleistocene terrace soils, the application of FRH reduced the grain, husk and straw arsenic by 38, 38 and 44%, respectively, whereas the RHA decreased the grain, husk and straw arsenic by 26, 30 and 29%, respectively. Fresh rice husk was found to be more effective in alleviating arsenic accumulation in rice than RHA. In both the Holocene floodplain and Pleistocene terrace soils, the grain concentrations of calcium, phosphorus, silicon, and zinc were found to be increased with the decrease of arsenic in the grain due to the use of FRH and RHA. The present study suggests that silicon-rich rice husk residue scan be used as silicon fertilisers to reduce arsenic accumulation in rice in Bangladesh. Bangladesh J. Sci. Ind. Res.56(3), 195-206, 2021

scholarly journals Response of Medium and Long Duration Boro Rice Variety (Oryza sativa L.) to Nitrogen Fertilizer

2017 ◽  
Vol 14 (2) ◽  
pp. 48-60
Author(s):  
Amina Khatun ◽  
M K Quais ◽  
A A Begum ◽  
M A Saleque ◽  
M S U Bhuiya
Keyword(s):  
Oryza Sativa ◽  
Field Experiment ◽  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Grain Yields ◽  
Long Duration ◽  
N Rates ◽  
Boro Rice

A field experiment was conducted during November 2009-April 2010 in Bangladesh Rice Research Institute, Bangladesh to examine the response of two rice (Oryza sativa L.) varieties (BRRIdhan28 and BRRI dhan29) to six N rates of nitrogen fertilizer viz. 0, 50, 100, 150, 200 and 250 kg ha-1. The experiment was conducted in a RCB design with three replications. Grain yields of both BRRI dhan28 and BRRI dhan29 increased significantly in a quadratic fashion with N rates. The highest grain yields were obtained from 150 kg N ha-1 in both the varieties. More than 1 t ha-1 yield was obtained in BRRI dhan29 (6.34 t ha-1) at the same rate of N indicated BRRI dhan29 as a nitrogen efficient variety. However, the predicted economic optimum doses of N appeared to be 156 and 158 kg ha-1 for BRRI dhan28 and BRRI dhan29, respectively. The grain yield was mainly influenced by the number of panicles per hill, which was found to increase with the increase of N rates in both the varieties. The Agriculturists 2016; 14(2) 48-60

Nitrogen supply influences arsenic accumulation and stress responses of rice (Oryza sativa L.) seedlings

2019 ◽  
Vol 367 ◽  
pp. 599-606 ◽  
Author(s):  
Sudhakar Srivastava ◽  
V.S. Pathare ◽  
Suvarna Sounderajan ◽  
P. Suprasanna
Keyword(s):  
Oryza Sativa ◽  
Stress Responses ◽  
Oryza Sativa L ◽  
Nitrogen Supply ◽  
Arsenic Accumulation

A novel fungal arsenic methyltransferase, WaarsM reduces grain arsenic accumulation in transgenic rice (Oryza sativa L.)

2018 ◽  
Vol 344 ◽  
pp. 626-634 ◽  
Author(s):  
Shikha Verma ◽  
Pankaj Kumar Verma ◽  
Alok Kumar Meher ◽  
Amit Kumar Bansiwal ◽  
Rudra Deo Tripathi ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Transgenic Rice ◽  
Oryza Sativa L ◽  
Arsenic Accumulation

scholarly journals Arsenic accumulation in rice (Oryza sativa L.): Human exposure through food chain

2008 ◽  
Vol 69 (2) ◽  
pp. 317-324 ◽  
Author(s):  
M. Azizur Rahman ◽  
H. Hasegawa ◽  
M. Mahfuzur Rahman ◽  
M.A. Mazid Miah ◽  
A. Tasmin
Keyword(s):  
Oryza Sativa ◽  
Food Chain ◽  
Human Exposure ◽  
Oryza Sativa L ◽  
Arsenic Accumulation

scholarly journals Enhancement of Regeneration Efficiency through Callus Induction Media Using 2,4-Dicholorophenoxyacetic acid in Indica Rice (Oryza sativa L. var. Ciherang)

2017 ◽  
Vol 18 (2) ◽  
pp. 91
Author(s):  
Kunti Anis Azizah ◽  
Didik Pudji Restanto ◽  
Bambang Sugiharto
Keyword(s):  
Oryza Sativa ◽  
Callus Induction ◽  
Embryogenic Callus ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Rice Variety ◽  
Rice Cultivar ◽  
Medium Composition ◽  
Regeneration Frequency ◽  
Optimum Result

Indica rice variety Ciherang is the most planted variety in Indonesia, but the micropropagation technique is restricted because it is known has low regeneration frequency and included as recalcitrant cultivar for tissue culture and tranformation activities. One of solution to resolve that problem is developing a technique of somatic embryogenesis in callus of ciherang rice cultivar. The aims of study were to determine medium composition for inducting embryogenic callus in Ciherang rice and to know the effectivity of rice regeneration using callus as explant. The methods were included induction of embryogenic callus in callus induction media (CIM) containing MS basal, Proline 600 mg/l, Casein Hidrolisat 300 mg/l, phytagel 2,5 g/l, BAP 0.25 mg/l, sukrosa 30 %, and 2,4-D in different concentration, from 2,4-D 0 mg/l as control (CIM 1), 2,4-D 2 mg/l (CIM 2), 2,4-D 3 mg/l (CIM 3), and 2,4-D 4 mg/l (CIM 4). It then be continued to regenerate the calli in RM 1 medium containing MS basal, NAA 0,2 mg/l, Kinetin 2 mg/l, Agarose 10 g/l, and sukrosa 30 %, pH 5,8 for six days in dark and RM2 medium containing MS basal , NAA 0,2 mg/l, Kinetin 2 mg/l, Agarose 8 g/l, sukrosa 30 %, pH 5,8 in light room. Results showed CIM 4 medium using 2,4-D 4 mg/l gave optimum result in calli induction with procentage 57,63% and CIM 3 using 2,4-D 3 mg/l gave optimum result in embryonic calli induction with procentage 53,63%. Result of embryonic calli gave regeneration frequency procentage is 9,6%. The total planlet obtained after five weeks old in regeneration medum were 11 planlets ready for aclimatization. Keywords: Somatic embryo, Indica rice (Oryza sativa L. var. Ciherang), Callus

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