scholarly journals Yield of Local Varieties of Paddy (Oryza sativa L.) with Different Plant Spacing in Rainy Season

2018 ◽  
Vol 17 (2) ◽  
pp. 118-122
Author(s):  
Didik Hariyono ◽  
Akbar Hidayatullah Zaini
Keyword(s):  
Oryza Sativa ◽  
Rainy Season ◽  
Oryza Sativa L ◽  
Plant Spacing ◽  
Local Varieties

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.

scholarly journals Tolerância de cultivares de arroz (Oryza sativa L.), ao complexo de coloração de grãos na estação chuvosa da costa equatoriana / Tolerance of rice cultivars (Oryza sativa L.), to the grain spotting complex in the rainy season on the Ecuadorian coast

2021 ◽  
Vol 4 (4) ◽  
pp. 6616-6628
Author(s):  
Víctor Goyes Cabezas ◽  
Miguel Goyes Cabezas ◽  
Oscar Mora Castro ◽  
Joffre León Paredes ◽  
Mario Quispe Sandoval ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Rainy Season ◽  
Oryza Sativa L ◽  
Rice Cultivars

O complexo de coloração de grãos é uma doença que afeta componentes de desempenho na cultura do arroz, por causar seu desaparecimento e diminuição de: germinação entre 26 e 41%; vigor e tamanho da muda; número de grãos por panícula; peso do grão até 40%; 30% de enchimento de grãos; Da mesma forma, prejudica a qualidade da semente, reduzindo o número de grãos inteiros e aumentando os grãos quebradiços no processo de moagem, como grãos de giz e grãos com coloração anormal. O objetivo do presente trabalho foi avaliar a tolerância de cultivares de arroz (Oryza sativa L.) ao complexo de coloração de grãos na estação chuvosa na área de Babahoyo. Para tanto, foram estabelecidos seis tratamentos e quatro repetições, utilizando sementes certificadas das variedades de arroz SFL 09, SFL 11, SFL 12, INIAP 14, INIAP 15 e INIAP Cristalino. Foi aplicado o delineamento experimental Blocos Completos ao acaso, onde as comparações das médias foram feitas com o teste de intervalo múltiplo de Tukey a 95% de probabilidade. As parcelas experimentais tiveram dimensões de 5,0 x 6,0 m, a separação entre as repetições foi de 1,0 m, dando uma área de teste de 810 m2. Todas as tarefas agrícolas necessárias foram realizadas no cultivo do arroz para o seu desenvolvimento normal, tais como preparo do terreno, semeadura, irrigação, fertilização, controle de ervas daninhas e fitossanitárias, e colheita. Para estimar corretamente os efeitos dos tratamentos, foram tomados os dados de incidência e severidade do complexo de coloração de grãos, determinação do agente causal, produtividade da cultura e análises econômicas. Através dos resultados obtidos, determinou-se que as variedades de arroz SFL 11, SFL 12, INIAP 14, INIAP 15 e INIAP Cristalino apresentam tolerância ao complexo de coloração de grãos no período chuvoso na região de Cedegé. A maior incidência (10,7%) e severidade (27,7%) do complexo de coloração de grãos ocorreu na variedade de arroz SFL 09; Curvularia sp. Foi determinado como o agente causal da coloração de grãos. e Helminthosporium sp. e a maior produtividade da cultura foi obtida com a variedade Iniap 15 com 5101,0 kg / ha.

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 Influence of crop geometry and cultivars on growth, yield and production efficiency of dry direct-seeded rice (Oryza sativa L.)

2017 ◽  
Vol 9 (4) ◽  
pp. 2469-2476
Author(s):  
Sandeep Kumar ◽  
Manoj Kumar Singh ◽  
Ram Swaroop Meena ◽  
Kiran Hingonia
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Production Efficiency ◽  
Oryza Sativa L ◽  
Treatment Plant ◽  
Growth Yield ◽  
Plant Spacing ◽  
Net Return ◽  
Direct Seeded ◽  
Crop Geometry

A field experiment was conducted during kharif (summer) season of 2014, aim of the experiment was to investigate suitable crop geometry and cultivar and their influences on performance of dry direct-seeded rice (Oryza sativa L.), experimental treatments were consisting of 15 treatments, namely, main plots: five cultivars (MTU 7029, NDR 97, HUR 105, HUR 4-3 and PRH-10) and sub-plots: three crop geometry’s (20 x 10, 20 x 20 and 25 x 25 cm2). All the data recorded were statistically analyzed using the standard procedures of split-plot design. The results indicated that amongst cultivars, aromatic rice hybrid PRH-10 recorded significantly more grain yield (5582.32 kg/ha) than cultivar HUR 4-3 (4612.99 kg/ha) and NDR 97 (3397.82 kg/ha), whereas; it was statistically comparable with cultivar MTU 7029 (5489.24 kg/ha) and HUR 105 (5022.03 kg/ha). The cultivar PRH-10 also registered higher gross return (105771.9 `/ha), net return (66389.08 `/ha) and production efficiency (592.76 `/ha/day) than the remaining cultivars. The higher grain yield of PRH-10 over these cultivars was due to considerable improvement in most of its yield attributing characters like panicle length (27.92 cm), a number of grains/panicle (178.70) and test weight (26.35 g). In a case of crop geometry treatment, plant spacing of 25 x 25 cm2 recorded higher grain yield as compared to remaining plant spacing while the plant spacing of 20 x 10 cm2 recorded higher gross return, net return and production efficiency as compared to 20 x 20 and 25 x 25 cm2. Plant geometry plays an imperative role towards improving the grain yield of cultivars in direct seeded rice by optimal utilization of natural resources. Therefore, for getting higher net return and production efficiency, cultivar PRH-10 at plant spacing 20 x 10 cm2 can be raised in dry direct-seeded rice in Varanasi region of Eastern Uttar Pradesh.

Proteins and amino acids of some local varieties of rice seeds (Oryza Sativa L.)

1990 ◽  
Vol 40 (4) ◽  
pp. 309-315 ◽  
Author(s):  
Edward G. Hagop ◽  
Suhaila A. Younis ◽  
Hisham A. Shahatha
Keyword(s):  
Amino Acids ◽  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Local Varieties ◽  
Rice Seeds

Tissue Culture response of Local Varieties of Rice (Oryza sativa L.) of NWFP

2001 ◽  
Vol 1 (5) ◽  
pp. 387-390 ◽  
Author(s):  
Asad Jan ◽  
Qazi M. Hassan ◽  
Tahira Fatima ◽  
Tayyab Hasnain
Keyword(s):  
Tissue Culture ◽  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Local Varieties ◽  
Tissue Culture Response

scholarly journals Genetic Divergence Studies for Gall Midge Incidence, Earliness, Yield and Yield Components in Rice (Oryza sativa L.) Genotypes in Telangana State

2020 ◽  
pp. 111-122
Author(s):  
Sreedhar Siddi
Keyword(s):  
Oryza Sativa ◽  
Rainy Season ◽  
Yield Components ◽  
Oryza Sativa L ◽  
Gall Midge ◽  
Grain Weight ◽  
Research Station ◽  
Yield And Yield Components ◽  
Telangana State ◽  
1000 Grain Weight

The study was carried out with 32 genotypes of rice (Oryza sativa L.) under irrigated system in RBD design with three replications at Agricultural Research Station, Kunaram in Telangana State during the rainy season of 2017. In general, major problem is high incidence of gall midge (Biotype 3) in rainy season under early as well as late planting conditions in Northern Zone of Telangana State. Hence, all the 32 genotypes were evaluated with an aim to know the divergence among them for gall midge incidence, earliness, yield and yield components. Based on D2 analysis, 32 genotypes were distributed into twelve clusters with the cluster I (12) containing maximum number of genotypes followed by cluster II (9). Highest inter cluster distances were observed between the clusters X and XII (2469.5) followed by III and XII (2283.3), and VII and XII (2173.6) suggesting wide diversity between the traits. Cluster mean analysis revealed that genotype, WGL 1119 from the cluster V would be used in breeding programme to develop gall midge resistant, high yielding, early duration, non lodging, medium slender grain genotypes as it recorded very low incidence of galls (0.9%) with high yield (4869.7 kg/ha), early duration (84.7 days), short stature (93.7 cm) and less 1000-grain weight (14.8 g). The genotypes, KNM 2305 and MTU 1001 from the clusters viz., VIII and X, respectively were identified as potential lines for developing high yielding, early and medium duration, long bold or long slender grain varieties. Among the traits studied, days to 50% flowering (55.8%) and 1000-grain weight (31.9%) manifested highest contribution towards total divergence, thus, these traits could be given due importance by the breeders for development of superior rice genotypes under crop improvement programme.

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