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ARROZ vermelho: cultivar BRS 901. Infoteca-e
Origem; Melhoramento genético; Informações técnicas; Características agronômicas; Resistência às doenças; Recomendações técnicas; Manejo recomendado; Região indicada; Comparativo de produtividade; Um alimento especial.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Melhoramento genético vegetal; Características agronômicas; Prática cultural; Variedade resistente; Oryza sativa; Red rice.
Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/1047767
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Development of herbicide-tolerant irrigated rice cultivars. Repositório Alice
RANGEL, P. H. N.; MOURA NETO, F. P.; FAGUNDES, P. R. R.; MAGALHAES JÚNIOR, A. M. de; MORAIS, O. P. de; SCHMIDT, A. B.; MENDONÇA, J. A.; SANTIAGO, C. M.; RANGEL, P. N.; CUTRIM, V. dos A.; FERREIRA, M. E..
The objective of this work was to develop new irrigated rice lines tolerant to imidazolinone herbicides. The backcross breeding procedure was used to transfer the imidazolinone tolerance allele from mutant 93AS3510 to the recurrent parents 'BRS 7 Taim' and 'BRS Pelota'. Individual herbicide-tolerant plants were selected in each generation, for three backcrossings (RC1 to RC3), followed by three selfing generations (RC3F1 to RC3F3). The best four RC3F3 lines for agronomic traits were genotyped with 44 microsatellite markers. The observed conversion index of the new imidazolinone-tolerant lines varied from 91.86 to 97.67%. Pairwise genetic distance analysis between these lines and 22 accessions from the Embrapa?s Rice Germplasm Bank clustered the new lines...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Arroz Clearfield; Microssatélite; Arroz; Oryza sativa; Melhoramento genético vegetal; Retrocruzamento; Arroz vermelho; Rice; Red rice; Microsatellite repeats.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/861297
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Development of herbicide-tolerant irrigated rice cultivars. Repositório Alice
RANGEL, P. H. N.; MOURA NETO, F. P.; FAGUNDES, P. R. R.; MAGALHAES JUNIOR, A. M. de; MORAIS, O. P. de; SCHMIDT, A. B.; MENDONCA, J. A.; SANTIAGO, C. M.; RANGEL, P. N.; CUTRIM, V. dos A.; FERREIRA, M. E..
Abstract ? The objective of this work was to develop new irrigated rice lines tolerant to imidazolinone herbicides. The backcross breeding procedure was used to transfer the imidazolinone tolerance allele from mutant 93AS3510 to the recurrent parents 'BRS 7 Taim' and 'BRS Pelota'. Individual herbicide-tolerant plants were selected in each generation, for three backcrossings (RC1 to RC3), followed by three selfing generations (RC3F1 to RC3F3). The best four RC3F3 lines for agronomic traits were genotyped with 44 microsatellite markers. The observed conversion index of the new imidazolinone-tolerant lines varied from 91.86 to 97.67%. Pairwise genetic distance analysis between these lines and 22 accessions from the Embrapa's Rice Germplasm Bank clustered the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Clearfield rice; Oryza sativa; Backcrossing; Microsatellites; Red rice.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/864305
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Development of herbicide-tolerant irrigated rice cultivars PAB
Rangel,Paulo Hideo Nakano; Moura Neto,Francisco Pereira; Fagundes,Paulo Ricardo Reis; Magalhães Junior,Ariano Martins de; Morais,Orlando Peixoto de; Schmidt,Andréa Branco; Mendonça,João Antônio; Santiago,Carlos Martins; Rangel,Priscila Nascimento; Cutrim,Veridiano dos Anjos; Ferreira,Márcio Elias.
The objective of this work was to develop new irrigated rice lines tolerant to imidazolinone herbicides. The backcross breeding procedure was used to transfer the imidazolinone tolerance allele from mutant 93AS3510 to the recurrent parents 'BRS 7 Taim' and 'BRS Pelota'. Individual herbicide-tolerant plants were selected in each generation, for three backcrossings (RC1 to RC3), followed by three selfing generations (RC3F1 to RC3F3). The best four RC3F3 lines for agronomic traits were genotyped with 44 microsatellite markers. The observed conversion index of the new imidazolinone-tolerant lines varied from 91.86 to 97.67%. Pairwise genetic distance analysis between these lines and 22 accessions from the Embrapa's Rice Germplasm Bank clustered the new lines...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Backcrossing; Clearfield rice; Microsatellites; Red rice.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000700010
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Evolutionary and social consequences of introgression of nontransgenic herbicide resistance from rice to weedy rice in Brazil. Repositório Alice
MEROTTO JUNIOR, A.; GOULART, I. C. G. dos R.; NUNES, A. L.; KALSING, A.; MARKUS, C.; MENEZES, V. G.; WANDER, A. E..
Several studies have expressed concerns about the effects of gene flow from transgenic herbicide-resistant crops to their wild relatives, but no major problems have been observed. This review describes a case study in which what has been feared in transgenics regarding gene flow has actually changed biodiversity and people?s lives. Nontransgenic imidazolinone-resistant rice (IMI-rice) cultivars increased the rice grain yield by 50% in southern Brazil. This increase was beneficial for life quality of the farmers and also improved the regional economy. However, weedy rice resistant to imidazolinone herbicides started to evolve three years after the first use of IMI-rice cultivars. Population genetic studies indicate that the herbicide- resistant weedy rice...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Fluxo de genes; Clearfield TM; Fitness; Arroz; Herbicida; Red rice; Herbicide resistance; Outcrossing; Imazethapyr; Gene flow; Acetolactate synthase.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1065797
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Genotypic performance, adaptability and stability in special types of irrigated rice using mixed models Rev. Ciênc. Agron.
Streck,Eduardo Anibele; Magalhães Júnior,Ariano Martins de; Aguiar,Gabriel Almeida; Facchinello,Paulo Henrique Karling; Fagundes,Paulo Ricardo Reis.
ABSTRACT There is an increasing demand for special types of rice that have black or red pericarp, low amylose (subspecie japonica) or aromatic. However, intense breeding process for obtaining and indicating genetically promising new cultivars and adapted to cultivation environments are demanded. In this sense, for evaluating the special types of irrigated rice genotypes, and determining the adaptability and stability of these using mixed models. First, a preliminary agronomic evaluation of genotypes for special types of irrigated rice was performed, and later, the agronomically promising genotypes were evaluated in multi-site trials, aiming at verifying the interactions with the environment. Statistical analyzes were performed considering mixed models,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Black rice; Red rice; Aromatic rice; Japanese rice.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100066
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Identification and validation of reference genes for the normalization in real-time RT-qPCR on rice and red rice in competition, under different nitrogen doses. Repositório Alice
BENEMANN, D. P.; NOHATO, A. M.; VARGAS, L.; AVILA, L. A.; AGOSTINETTO, D..
2017
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Oryza sativa; Arroz; Oryza sativa; Rice; Red rice; Gene expression.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1070085
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Market Impacts of Adopting Herbicide-Resistant Rice in the Southern United States AgEcon
Fuller, Frank H.; Annou, Mamane Malam; Wailes, Eric J..
Herbicide-resistant (HR) rice varieties offer U.S. rice producers a powerful tool for control of red rice infestations. However, improved weed control can shorten crop rotations and boost yields, resulting in expanded rice production and lower domestic market prices. Declining market returns diminish the benefits of HR rice adoption and substantially reduce net returns for nonadopters. More competitive prices increase U.S. rice exports, causing a slight decline in world rice prices. The dependence of the rice marketing loan program on world prices prevents loan deficiency payments from adequately offsetting producers’ market revenue losses. U.S. consumers gain from lower rice prices.
Tipo: Journal Article Palavras-chave: Biotechnology; Crop rotation; Herbicide resistant; Red rice; Rice; Simulation models; Technology adaptation; Q11; Q16; Q18; O33; C53.
Ano: 2003 URL: http://purl.umn.edu/37859
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One-step, codominant detection of imidazolinone resistance mutations in weedy rice (Oryza sativa L.) Electron. J. Biotechnol.
Rosas,Juan E; Bonnecarrère,Victoria; Pérez de Vida,Fernando.
Background Weedy rice (Oryza sativa L.) is a noxious form of cultivated rice (O. sativa L.) associated with intensive rice production and dry seeding. A cost-efficient strategy to control this weed is the Clearfield rice production system, which combines imidazolinone herbicides with mutant imidazolinone-resistant rice varieties. However, imidazolinone resistance mutations can be introgressed in weedy rice populations by natural outcrossing, reducing the life span of the Clearfield technology. Timely and accurate detection of imidazolinone resistance mutations in weedy rice may contribute to avoiding the multiplication and dispersion of resistant weeds and to protect the Clearfield system. Thus, highly sensitive and specific methods with high throughput...
Tipo: Journal article Palavras-chave: Clearfield rice; DNA-based resistance diagnosis; Herbicide resistance; KASP; Red rice; SNP.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000200007
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Phenolic compounds and antioxidant activity of rice BABT
Walter,Melissa; Marchesan,Enio.
The aim of this work was to study the phenolic compounds identified in rice, their antioxidant activity and their potential beneficial effects on health. In vitro and in vivo studies evaluating the rice grains with different pericarp colour (light brown, red and black) showed potential beneficial effects on health related to the polyphenol content of the grain, such as reduction of oxidative stress, aid in the prevention of cancer, cardiovascular diseases and complications of diabetes, among others.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rice; Red rice; Black rice; Polyphenols; Antioxidant; Biological effect.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000200020
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Seed longevity of red rice ecotypes buried in soil Planta Daninha
Noldin,J.A.; Chandler,J.M.; McCauley,G.N..
Red rice is a troublesome weed in irrigated rice production and is spread through contaminated commercial rice seed and machinery. Seed dormancy is a major trait for red rice. Studies were carried out at two locations to determine red rice seed longevity in the soil of several ecotypes from four US states. Five months after burial near Beaumont, Texas only three ecotypes had viable seed (<1%) when buried at 5 cm, but 9 ecotypes had viable seed after two years when buried at 25 cm. At the thirty-sixth month after burial, ecotypes Arkansas 2, Louisiana 2 and 4, Mississippi 4 and Texas 1 had viable seeds, but at less than 1%. Freshly harvested red rice seeds buried at 12 cm near College Station, TX, survived longer than seeds placed on the soil surface....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Red rice; Oryza sativa; Rice; Seed survival; Seed dormancy; Strawhull ecotypes; Blackhull ecotypes.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582006000400001
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Selection of rice genotypes with greater seedling vigor under controlled conditions. Repositório Alice
RANGEL, P. H. N.; MORAIS, O. P. de; BRONDANI, C.; RANGEL, P. N.; BRONDANI, R. P. V..
This study aimed to identify allele sources for seedling vigour in 65 rice genotypes, using the slantboard test in a germination chamber, and to determine the best parameter for evaluating seedling vigour. The experiment was arranged in the randomized block design with three replicate blocks. Root and primary leaf length data were collected from seedlings grown in the dark at 18 degrees C, 15 days after sowing and at 25 degrees C, ten days after sowing. The best performing genotypes for seedling vigour were included in Group 2, which contained red rice accessions. The vigour was best evaluated under controlled conditions (grown at 18 degrees C, 15 days after sowing) through measurements of roots and primary leaves..
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Arroz; Oryza sativa; Oryza glumaepatula; Arroz vermelho; Parâmetros genéticos; Slantboard test; Red rice; Genetic parameters.
Ano: 2006 URL: http://www.alice.cnptia.embrapa.br/handle/doc/214378
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Vegetative and reproductive development of Costa Rican weedy rice compared with commercial rice (Oryza sativa) Planta Daninha
Sánchez-Olquín,E.; Arrieta-Espinoza,G.; Espinoza Esquivel,A.M..
The variability in the chronology of the vegetative and reproductive development of weedy rice complex has been little studied. However, a field trial was established to study the timing of growth stages of sixteen weedy rice morphotypes and five rice varieties of Costa Rica. Weedy rice presented a wide range of variation for all descriptors among and within morphotypes. Weedy rice was taller than the rice varieties during vegetative phase and showed a growth increase of 14-23 cm every two weeks. Six morphotypes emerged earlier than commercial rice varieties, but no differences where found between samples for the time required for starting tillering. Early emergence of weedy rice morphotypes was not associated with early flowering, thus no correlation was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthesis overlapping; Growth stages; Red rice; Rice varieties.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000100002
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Weed phytosociological in irrigated rice under different cultivation systems and crop rotation intensity Ciência Rural
Ulguim,André da Rosa; Carlos,Filipe Selau; Santos,Rodrigo Areze da Silva; Zanon,Alencar Junior; Werle,Isabel Schlegel; Beck,Mattheus.
ABSTRACT: This research aimed to evaluate the phytosociology of weeds in irrigated rice in different soil management systems and crop rotation intensity. Therefore, two field studies were carried out. Study 1 was conducted in an area that has been cultivated since 1994 with three cultivation systems: direct, pre-germinated and conventional ones. Study 2 was carried out in an experimental area in five Integrated Farming Systems, with crop rotation. Phytosociological evaluations were conducted when rice was fully blooming, in the first study, and when grain filling was ending, in the second study. Pre-germinated system of rice cultivation has predominance of aquatic weeds. Conventional system when compared with direct sowing has lower weed densities....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Red rice; Sustainable intensification.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100150
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การศึกษาเปรียบเทียบกลุ่มสาร Acylated steryl glucosides ในข้าวกล้องและข้าวกล้อง และความสัมพันธ์กับสีของข้าว Thai Agricultural
Pakinee Akkaravessapong; Suganya Wongpornchai; Sunanta Wongpiyachon; Kitsada Pitija; Angsutorn Wasusun; Panawan Suttiarporn.
Acylated Steryl Glucosides (ASGs) are unsaponified matters that are ubiquitously distributed in edible plant sources, for example barley, maize and brown rice. ASGs in pre-germinated brown rice have reported to improve insulin activity and blood glucose control mechanisms in the diabetic condition through the activation of insulin like growth factor 1 (IGF-1) and increasing of IGF-1 production. Recently, the medical studies confirm that dietary intake of brown and pre-germinated brown rice is useful for alleviating symptoms of both diabetes and pre-diabetes. To improve the functional dietary intake of Thai rice, identification of ASGs in seven varieties, namely: Khao Dawk Mali 105, PTT1, RD31, Sang Yod, RD6, Niaw Dam Chum Pae and Niaw Dam Maw, brown and...
Tipo: PhysicalObject Palavras-chave: Acylated steryl glucosides; Rice varieties; Sterol; Free fatty acid; White rice; Red rice; Brown rice; Pre-germinated brown rice; ASGs; Blood glucose control; Nutritive value; Chemical composition; Color; ข้าวกล้อง; ข้าวกล้องงอก; ข้าวขาว; ข้าวต่างสี; สารต้านอนุมูลอิสระ; การควบคุมระดับน้ำตาล; กรดไขมันอิสระ; สเตอรอล; โครงสร้างทางเคมี; การวิเคราะห์องค์ประกอบทางเคมี; คุณค่าทางโภชนาการ; สารสี; พันธุ์ฺข้าว.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5712
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