A5087387580- Plant tissue culture and regeneration
- Banana Cultivation and Research
- Plant Genetic and Mutation Studies
- Growth and nutrition in plants
- Genetics and Plant Breeding
- Pineapple and bromelain studies
- Agricultural and Food Sciences
- Plant pathogens and resistance mechanisms
- Rice Cultivation and Yield Improvement
- Soybean genetics and cultivation
- Agricultural pest management studies
- Plant Pathogens and Fungal Diseases
- Plant Virus Research Studies
- Silicon Effects in Agriculture
- Plant Physiology and Cultivation Studies
- Plant Disease Resistance and Genetics
- Seed Germination and Physiology
- Crop Yield and Soil Fertility
- Plant Pathogenic Bacteria Studies
- Flowering Plant Growth and Cultivation
- Plant Reproductive Biology
- Aluminum toxicity and tolerance in plants and animals
- Chromosomal and Genetic Variations
- Wheat and Barley Genetics and Pathology
- Soil Management and Crop Yield
Universidade de São Paulo
2004-2024
Universidade Estadual Paulista (Unesp)
2006-2020
Centro Universitário de Araraquara
2020
Methodist University of Piracicaba
1993-2014
Hospital Universitário da Universidade de São Paulo
2002-2012
IAC (United States)
2006
Sakata (Brazil)
2004
Universidad San Pedro
1999-2003
Instituto Agronômico do Paraná
1978
Traditionally, mutagenesis has been used to introduce novel genetic variability in ornamental crops. More recently, it become a powerful tool gene discovery and functional analyses reverse genetics approaches. The present work aimed compare the efficiency of physical chemical agents generating mutant populations petunia. We have indirectly evaluated genomic damage by analyzing developmental characteristics plantlets derived from treated seeds employing gamma radiation at 0, 20, 40, 60, 80...
Abstract The aryloxyphenoxypropionate herbicides ( APP s) are graminicides with excellent control of many grass weeds species, including weedy rice Oryza sativa L.). These block the fatty acid biosynthesis by inhibiting enzyme acetyl‐CoA carboxylase ACC ase), resulting in death susceptible plants. Inducing mutation gamma rays to seeds, two lines resistant s were developed. Plant dose–response assays confirmed resistance APPS quizalofop‐p‐ethyl and haloxyfop‐p‐methyl. carboxyltransferase...
Tomato is a good example of successful use mutations affecting major genes for plant breeding, which are also valuable gene discovery and physiological studies. However, mutant alleles only currently known an insignificant fraction the about 35,000 in tomato genome. Large scale mutagenesis introgression natural genetic variation from wild Lycopersicon species into model system, such as ‘Micro-Tom’ (MT), can be useful to fill this gap. MT has advantages little space requirements rapid cycle....
One of the major difficulties in studies on selection heavy metal tolerant plants is proper methodology that must ensure an efficient evaluation a large number plants, but reducing environmental contamination. For this reason, we propose simple and effective method can be applied to metals or other chemicals by means case study, which selected two cadmium-tolerant mutants tomato (cv Micro-Tom) obtained mutagenesis with methyl ethanesulfonate (MES). Aside from these new mutants, 21 others...
ISHS II International Symposium on Banana: I Banana in the Subtropics INFLUENCE OF THE NUMBER SUBCULTURES ON SOMACLONAL VARIATION IN MICROPROPAGATED NANICÃO (MUSA SPP., AAA GROUP)
Fig breeding programs through conventional methods are rare in many countries, e.g. Brazil, since the wasp Blastophaga psenes, which is responsible for natural pollination, not present. For these cases a low cost alternative program induction of physical mutagenesis by radiation. The sensivity fig explant buds different sizes to gamma radiation were evaluated. plantlets "Roxo de Valinhos" already established vitro classified size 2.5 4.5 cm, 5 9 7 cm and 8 10 long, irradiated with: 10, 20,...
The new rice cultivar, SCS118 Marques, was obtained through gamma irradiation of SCSBRS Tio Taka cultivar. Marques presents modern architecture, lodging resistance, late maturity cycle, moderate resistance to blast, high yield potential, long grains and very cooking quality. Industrial tests performed with showed that are suitable for parboiling white rice, it is recommended all rice-producing regions Santa Catarina.
Garlic cultivars are sexually sterile under standard growth conditions, with direct implications for commercial production costs as well breeding programs. is propagated commercially via bulblets, which facilitates disease transmission and virus load accumulation over vegetative generations. Tissue culture produces virus-free clones that more productive, while keeping the desired traits of cultivar. Consequently, this technique allows studies garlic genetics guarantees genetic conservation...
Genetic variability for resistance to Alternarla leaf spot disease (Alternaria helianthi) can be induced by radiation or chemical mutagens. The objectives of this study were create genetic in cultivated sunflower and select lines resistant Alternaria spot. In the first experiment, seeds genotype HA BR 104 irradiated with 150 165 Gy gamma rays. Seeds sown field at Embrapa Soybean experimental station, Londrina, PR, Brazil M1 plants harvested bulk. M2,M3 M4 screened under natural infection...
A plant regeneration method with cell suspension cultures of banana, and the effect biobalistic on potential are described in this report. Somatic embryos banana were obtained from indirect embryogenesis male inflorescence cultivar Maçã (AAB group). Part calluses formed (40%) showed embryogenic characteristics (nonfriable, compact yellow color). The suspension, originated calluses, contained clusters small tightly packed cells dense cytoplasms, relatively large nuclei very nucleoli. After...
Compararam-se dezesseis linhagens mutantes tolerantes à toxicidade de alumínio em solução nutritiva, uma linhagem mutante sensível e os cultivares Anahuac, IAC-60 IAC-24, trigo. As foram originárias seleções realizadas populações do cultivar Anahuac (sensível ao Al3+) cujas sementes submetidas tratamento irradiação gama com as doses 260 310 Gy. comparações dois locais através seis experimentos épocas diferentes, analisando-se a produção grãos, características agronômicas tolerância solos...
A obtenção de cultivares citros com pequeno número sementes é importante quando o objetivo a produção frutas para consumo in natura. O deste trabalho foi avaliar, por três anos (1997, 1998 e 1999), médio 15 outras características agronômicas, 127 mutantes putativos laranja-'Pêra', selecionados após irradiação borbulhas raios-gama 8 plantas selecionadas do controle não irradiado. Os foram divididos em 16 grupos baseados nos tipos mutações observados cada grupo, como comum, incluídas...
O emprego da técnica de indução mutação associada à hibridação tem contribuído para a obtenção novos genótipos trigo com características agronômicas desejáveis. Avaliaram-se 18 linhagens trigo, sendo dez oriundas seleção plantas do híbrido Kauz "S"x IAC-24 que tiveram as sementes, em geração F2, irradiadas (I) raios gama e oito não (NI), além das cultivares IAC-289, seis experimentos instalados no período 1997-99. Foram analisadas produção grãos, resistência doenças outras agronômicas. Em...
Em programas de melhoramento citros por indução mutações já foi comprovada a sensibilidade diferencial às doses mutagênico em plantas diferentes variedades e propágulos uma mesma planta. O objetivo do presente estudo avaliar radiossensibilidade dois tipos (borbulhas segmentos epicótilo in vitro) tangor 'Murcott', tangerinas 'Thomas' 'Fremont' limão 'Cravo' (este apenas comparar entre variedades. Foram utilizadas as 0, 10, 20, 30, 40 50 Gy raios-gama, com avaliações aos 60 dias dos...