Development and application of a set of breeder-friendly SNP markers for genetic analyses and molecular breeding of rice (Oryza sativa L.)

2011 ◽  
Vol 123 (6) ◽  
pp. 869-879 ◽  
Author(s):  
Haodong Chen ◽  
Hang He ◽  
Yanjiao Zou ◽  
Wei Chen ◽  
Renbo Yu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Molecular Breeding ◽  
Oryza Sativa L ◽  
Snp Markers ◽  
Genetic Analyses

scholarly journals Water uptake dynamics under progressive drought stress in diverse accessions of the OryzaSNP panel of rice (Oryza sativa)

2012 ◽  
Vol 39 (5) ◽  
pp. 402 ◽  
Author(s):  
Veeresh R. P. Gowda ◽  
Amelia Henry ◽  
Vincent Vadez ◽  
H. E. Shashidhar ◽  
Rachid Serraj
Keyword(s):  
Oryza Sativa ◽  
Drought Stress ◽  
Root Growth ◽  
Water Uptake ◽  
Root Length Density ◽  
Oryza Sativa L ◽  
Root Water Uptake ◽  
Snp Markers ◽  
Drought Response ◽  
Genotypic Differences

In addition to characterising root architecture, evaluating root water uptake ability is important for understanding drought response. A series of three lysimeter studies were conducted using the OryzaSNP panel, which consists of 20 diverse rice (Oryza sativa L.) genotypes. Large genotypic differences in drought response were observed in this genotype panel in terms of plant growth and water uptake. Total water uptake and daily water uptake rates in the drought-stress treatment were correlated with root length density, especially at depths below 30 cm. Patterns of water uptake among genotypes remained consistent throughout the stress treatments: genotypes that initially extracted more water were the same genotypes that extracted more water at the end of the study. These results suggest that response to drought by deep root growth, rather than a conservative soil water pattern, seems to be important for lowland rice. Genotypes in the O. sativa type aus group showed some of the greatest water uptake and root growth values. Since the OryzaSNP panel has been genotyped in detail with SNP markers, we expect that these results will be useful for understanding the genetics of rice root growth and function for water uptake in response to drought.

Identification of a Seed Phospholipase D Null Allele in Rice (Oryza sativa L.) and Development of SNP Markers for Phospholipase D Deficiency

Crop Science ◽  
2011 ◽  
Vol 51 (5) ◽  
pp. 2113-2118 ◽  
Author(s):  
Yasuhiro Suzuki ◽  
Yoshinobu Takeuchi ◽  
Kenta Shirasawa
Keyword(s):  
Oryza Sativa ◽  
Phospholipase D ◽  
Null Allele ◽  
Oryza Sativa L ◽  
Snp Markers

scholarly journals Dynamic Transcriptome Analysis of Anther Response to Heat Stress during Anthesis in Thermotolerant Rice (Oryza sativa L.)

2020 ◽  
Vol 21 (3) ◽  
pp. 1155 ◽  
Author(s):  
Gang Liu ◽  
Zhongping Zha ◽  
Haiya Cai ◽  
Dandan Qin ◽  
Haitao Jia ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Molecular Breeding ◽  
Grain Quality ◽  
Oryza Sativa L ◽  
Core Gene ◽  
Heat Treatments ◽  
Stress Factors ◽  
Yield Losses ◽  
Main Gene ◽  
Heat Response

High temperature at anthesis is one of the most serious stress factors for rice (Oryza sativa L.) production, causing irreversible yield losses and reduces grain quality. Illustration of thermotolerance mechanism is of great importance to accelerate rice breeding aimed at thermotolerance improvement. Here, we identified a new thermotolerant germplasm, SDWG005. Microscopical analysis found that stable anther structure of SDWG005 under stress may contribute to its thermotolerance. Dynamic transcriptomic analysis totally identified 3559 differentially expressed genes (DEGs) in SDWG005 anthers at anthesis under heat treatments, including 477, 869, 2335, and 2210 for 1, 2, 6, and 12 h, respectively; however, only 131 were regulated across all four-time-points. The DEGs were divided into nine clusters according to their expressions in these heat treatments. Further analysis indicated that some main gene categories involved in heat-response of SDWG005 anthers, such as transcription factors, nucleic acid and protein metabolisms related genes, etc. Comparison with previous studies indicates that a core gene-set may exist for thermotolerance mechanism. Expression and polymorphic analysis of agmatine-coumarin-acyltransferase gene OsACT in different accessions suggested that it may involve in SDWG005 thermotolerance. This study improves our understanding of thermotolerance mechanisms in rice anthers during anthesis, and also lays foundation for breeding thermotolerant varieties via molecular breeding.

Regional scale distribution of imidazolinone herbicide-resistant alleles in red rice (Oryza sativa L.) determined through SNP markers

2010 ◽  
Vol 119 (1) ◽  
pp. 175-182 ◽  
Author(s):  
A.C. Roso ◽  
A. Merotto Jr ◽  
C.A. Delatorre ◽  
V.G. Menezes
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Regional Scale ◽  
Snp Markers ◽  
Red Rice ◽  
Herbicide Resistant

Keragaan Morfologi dan Kandungan Antosianin Padi Beras Merah (Oryza sativa L.) di Kecamatan Munte dan Kecamatan Payung, Kabupaten Karo

1970 ◽  
Vol 5 (3) ◽  
pp. 391-403
Author(s):  
Wiwik Winarti ◽  
Eva Sartini Bayu ◽  
Revandy Iskandar Damanik
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
International Rice Research Institute ◽  
Research Institute

Keragaan morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.) pada Kecamatan Munte dan Kecamatan Payung di Kabupaten Karo. Penelitian ini bertujuan untuk mendapatkan informasi morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.). Penelitian ini dimulai dari Juni 2017dan selesai pada Januari 2018 di kecamatan Munte dan Kecamatan Payung Kabupaten Karo.Metode survei deskriptif menggunakan panduan International Rice Research Institute (IRRI). Teknik penentuan lokasi secara sengaja dan pengamblan sampel secara kebetulan.Uji kandungan antosianin menggunakan metode analitik dengan menghomogenkan sampel. Hasil eksplorasi didapatkan 72 genotipe yang dibagi menjadi tiga lokasi lahan. Berdasaran uji kandungan antosianin didapatkan lahan A memiliki kandungan tertinggi yaitu 0,5 mg/100 g dan terendah yaitu lahan B 0,08 mg/100 g.

Efficacy of some insecticide modules against major insect pests and spider population of rice, Oryza sativa L.

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 257-262
Author(s):  
Atanu Seni ◽  
Bhimasen Naik
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Untreated Control ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Gall Midge ◽  
Stem Borer ◽  
The Other ◽  
The Third ◽  
Treated Plot

Experiments were carried out to assess some insecticide modules against major insect pests of rice. Each module consists of a basal application of carbofuran 3G @ 1 kg a.i ha-1 at 20 DAT and Rynaxypyr 20 SC @ 30 g a.i ha-1 at 45 DAT except untreated control. All modules differ with each other only in third treatment which was applied in 65 DAT. The third treatment includes: Imidacloprid 17.8 SL @ 27 g a.i ha-1, Pymetrozine 50 WG @ 150 g a.i ha-1, Triflumezopyrim 106 SC @ 27 g a.i ha-1, Buprofezin 25 SC @ 250 g a.i ha-1; Glamore (Imidacloprid 40+Ethiprole 40% w/w) 80 WG @ 100 g a.i. ha-1, Thiacloprid 24 SC @ 60 g a.i ha-1, Azadirachtin 0.03 EC @ 8 g a.i ha-1, Dinotefuran 20 SG@ 40 g a.i ha-1 and untreated control. All the treated plots recorded significantly lower percent of dead heart, white ear- head caused by stem borer and silver shoot caused by gall midge. Module with Pymetrozine 50 WG @ 150 g a.i ha-1 treated plot recorded significantly higher per cent reduction of plant hoppers (>80% over untreated control) and produced higher grain yield (50.75 qha-1) than the other modules. Among the different treated modules the maximum number of spiders was found in Azadirachtin 0.03 EC @ 8 g a.i ha-1 treated module plot followed by other treatments.

Correlation Studies on Grain Yield and its Component Traits in Rice (Oryza sativa L.)

2012 ◽  
Vol 2 (11) ◽  
pp. 13-14
Author(s):  
R. ARULMOZHI R. ARULMOZHI ◽  
◽  
Dr. A. MUTHUSWAMY Dr. A. MUTHUSWAMY
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Correlation Studies ◽  
Component Traits
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