scholarly journals Microclimate on rice cultivation of local varieties (Oryza sativa L.) by intermittent irrigation

2021 ◽  
Vol 824 (1) ◽  
pp. 012088
Author(s):  
B H Isnawan ◽  
Samanhudi ◽  
Supriyono ◽  
Supriyadi
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Rice Cultivation ◽  
Local Varieties ◽  
Intermittent Irrigation

scholarly journals Whole-genome sequencing of three local rice varieties (Oryza sativa L.) in Vietnam

2021 ◽  
Vol 8 (3) ◽  
Author(s):  
Ky Huynh ◽  
Giang Van Quoc ◽  
Tung Nguyen Chau Thanh ◽  
Hien Nguyen Loc ◽  
Vo Cong Thanh
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
New Technology ◽  
Quality Data ◽  
Whole Genome ◽  
Rice Varieties ◽  
Local Varieties ◽  
Wide Range ◽  
Indel Polymorphisms ◽  
Next Generation Sequencing Ngs

Recently, a new technology, Next-generation sequencing (NGS) has been launched and providing whole-genome sequences that helps identify molecular markers across the genome. DNA markers such as single nucleotides and insertion – deletion (InDel) polymorphisms were widely used for plant breeding particularly to distinguish important traits in rice. These PCR-based markers can be used for the precision detection of polymorphisms. Moreover, PCR-based approaches are simple and effective methods for dealing with the issue of fraudulent labeling and adulteration in the global rice industry. In this study, three local varieties of Oryza sativa L. in Vietnam were sequenced with up to ten times genome depth and at least four times coverage (~83%) using the Illumina HiSeq2000™ system, with an average of 6.5 GB clean data per sample, generated after filtering low-quality data. The data was approximately mapped up to 95% to the reference genome IRGSP 1.0. The results obtained from this study will contribute to a wide range of valuable information for further investigation into this germplasm.

Physiological and Biochemical Responses of Rice (Oryza Sativa L.) Varieties Against Drought Stress

2021 ◽  
Vol 50 (2) ◽  
pp. 335-342
Author(s):  
Ibrahim Selçuk Kuru ◽  
ÇIğdem Işikalan ◽  
Filiz Akbaş
Keyword(s):  
Oryza Sativa ◽  
Drought Stress ◽  
Stress Tolerance ◽  
Oryza Sativa L ◽  
Drought Treatment ◽  
Local Varieties ◽  
Drought Stress Tolerance ◽  
Biochemical Responses ◽  
Physiological And Biochemical

Physiological and biochemical responses of six different rice (Oryza sativa L.) varieties cultivated in Turkey and two local varieties, namely Karacadağ and Hazro to the drought were investigated. After 12 days of drought treatment, the highest and lowest OP values were observed in Osmancık-97 (-1.14 MPa) and Karacadağ (-1.55 MPa) varieties, respectively. In the same treatment, it was observed that the amount of proline increased 19.9-fold in Karacadağ and 3.6-fold in Osmancık-97. When the data obtained from all parameters were correlated with drought stress tolerance, Osmancık-97 and Beşer varieties were considered to be tolerant, while Gönen and Karacadağ varieties are considered to be more sensitive. Bangladesh J. Bot. 50(2): 335-342, 2021 (June)

scholarly journals Rice (Oryza sativa L) cultivation in the highest elevation of the world

2013 ◽  
Vol 2 ◽  
pp. 31-41 ◽  
Author(s):  
MN Paudel
Keyword(s):  
Oryza Sativa ◽  
Agricultural Research ◽  
Oryza Sativa L ◽  
Future Generation ◽  
Rice Cultivation ◽  
Temperate Region ◽  
Japonica Variety ◽  
Rice Varieties ◽  
The World ◽  
The Impact

Jumla is one of the 75 districts in the midwestern hills of Nepal. Rice (Oryza sativa L) cultivation in Jumla ranges from 2,400 to 3,050 m altitude, which is the highest elevation in the world. The highest elevation at 3,050 m is Chhumjul of Jumla, a record altitude, where rice is cultivated in Nepal. Jumli Marshi, a Japonica variety of indigenous rice, having cold tolerant gene, is probably cultivated since 1,300 years ago in Jumla in the bank of the Tila river. Improved rice varieties were tested in the Jumla valley by the Nepal Agricultural Research Council (NARC). In 2002, two improved rice varieties Chandannath-1 and Chandannath-3 were released for temperate region of Jumla and Karnali zone. Productivity of rice in Jumla is 1.7 mt/ha almost 40% lower than that of national average of 2.97 t/ha. Low productivity of rice is mainly due to the constraints of many biotic, abiotic and socio-economic factors. Food security in the food deficit region of the Karnali zone could be sustained by increasing rice productivity in the Jumla region where perennial irrigation is available round the year. Whole of the Jumla region is unique place with respect to rice cultivation in the highest altitude of the world. The practice of rice cultivation in Jumla could be a remarkable activity for boosting agro-tourism in the agrarian country like Nepal. Rice cultivation in Jumla is quite unique from the rice cultivation even in the same range of temperate region. Such a typical organic rice production system in the highest elevation of the world needs immediate attention of all institutions and authorities concerned to conserve it for the future generation as well. Jumla, the temperate region, is also affected by the impact of global warming thereby receding water level in the Tila river and its tributaries flowing in the Jumla valleys during rice growing season (March - October). Attempts have been made to document ethno-culture, socio-economic and cultural practices of rice cultivation in the highest elevation in the world. DOI: http://dx.doi.org/10.3126/ajn.v2i0.7519 Agronomy Journal of Nepal (Agron JN) Vol. 2: 2011 pp.31-41

scholarly journals Dinamika Kalium Tanah dan Hasil Padi Sawah (Oryza sativa L.) akibat Pemberian NPK Majemuk dan Penggenangan pada Fluvaquentic Epiaquepts

SoilREns ◽  
2016 ◽  
Vol 14 (1) ◽  
Author(s):  
Muhammad Imam Al Mu'min ◽  
Benny Joy ◽  
Anni Yuniarti
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Block Design ◽  
Soil Science ◽  
Land Resources ◽  
Soil Potassium ◽  
Randomized Block Design ◽  
Intermittent Irrigation ◽  
Department Faculty ◽  
Total Potassium

This experiment aimed to find out the effect of application NPK compound and water regulation on soil potassium  and  yield  of  rice  (Oryza  sativa L.) on  Fluvaquentic  Epiaquepts.  This  experiment  was conducted  from  May to October 2015,  at  paddy field  of  Soil and  Water  Management,  Soil Science and Land Resources Department, Faculty of Agriculture, Padjadjaran University, Jatinangor, Sumedang. The experiment was arranged in Randomized Block Design consisted of ten treatments and three replications.The treatment consisted of : Control, Waterlogged 5 cm; 150 kg NPK ha-1, Waterlogged 5 cm; 300 kg NPK ha-1, Waterlogged 5 cm; 450 kg NPK ha-1, Waterlogged 5 cm; 600 kg NPK ha-1, Waterlogged 5 cm; 750 kg NPK ha-1, Waterlogged; local recommendation, Intermittent irrigation each 1 day until waterlogged; 450kg  NPK  ha-1, Intermittent  irrigation  each 3  days until waterlogged;  450 kg  NPK ha-1,  and  Intermittent irrigation each 5 days until waterlogged; 450 kg NPK ha-1. The results showed that there was effect of soil *potassium  and  yield  of  rice on  Fluvaquentic Epiaquepts.  The treatment  of  750  kg  NPK  ha-1 that waterlogged 5 cm give the highest result of Total Potassium, it was around 281,95 mg.kg-1, available of Potassium  was  around  0,45  cmol+.kg-1  and  the  highest  yield  was  7,02  kg.square-1  or  equal about  9,95 ton.ha-1. Keywords : Postassium, Inorganic Fertilizer Compound, Waterlogged, rice (Oryza sativa, L.)

scholarly journals Effect of dates and methods of winter rice (Oryza sativa L.) transplanting on relayed niger (Guizotia abyssinica) and soil health

2019 ◽  
Author(s):  
Anju Mala Deka ◽  
P. C. Bora ◽  
H. Kalita ◽  
A. S.N. Zaman ◽  
Pompi Saikia
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Conventional Method ◽  
Oryza Sativa L ◽  
Rice Cultivation ◽  
System Of Rice Intensification ◽  
Guizotia Abyssinica ◽  
Relay System ◽  
Yield Attributes ◽  
Available N

A field experiment was conducted to study the effect of dates of transplanting under different methods of cultivation on productivity of winter rice (Oryza sativa L.) and their effect on rice-niger (Guizotia abyssinica) relay system at Regional Agricultural Research Station, Shillongani Nagaon, Assam during kharif-rabi seasons in the year 2014-15 and 2015-16. Rice transplanted on 20 June recorded significantly higher yield attributes and grain yield of rice (59.19 q/ha) as compared to the later dates of transplanting, and it was followed by 5 July- transplanted rice. Transplanting on 20 June resulted in higher values in respect of yield attributes, yield of relayed niger, rice equivalent yield (REY) of rice- niger relay system (75.68 q/ha), NPK uptake by rice and niger as well as soil fungal and bacterial population after harvest of rice and niger. System of Rice Intensification (SRI) recorded significantly higher value of yield attributes and grain yield of rice (60.34q/ha) as compared to conventional method. In case of relayed niger, yield attributes, seed yield and REY were found higher under SRI method of rice cultivation. Under SRI method, higher uptake of NPK by rice and niger and higher soil fungal and bacterial populations after harvest of rice and niger were observed as compared to conventional method. However, conventional method of rice cultivation recorded significantly higher values of soil available N, P2O5 and K2O content at the end of two year-crop cycle over that of SRI.

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