https://www.alice.cnptia.embrapa.br/alice/handle/item/214 Artigo em periódico indexado (CNPMF) Sun, 12 Apr 2026 03:53:18 GMT 2026-04-12T03:53:18Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1185486 Título: Development of bemisia tabaci (Gennadius,1889) biotype B on Lycopersicon spp. genotypes. Autoria: FANCELLI, M.; VENDRAMIM, J. D. Conteúdo: Whiteflies are phytophagous insects, whose nymphs and adults suck the phloem sap, causing direct damage due to host plant weakness. In tomato (Lycopersicon spp.) crops, they are important vectors of limiting fitoviruses. The objective of this study was to determine the effects of Lycopersicon spp. genotypes on Bemisia tabaci (Gennadius, 1889) biotype B development under greenhouse conditions. The evaluated genotypes were LA462 (L. peruvianum), LA716 (L. pennellii), LA1584 (L. pimpinellifolium), LA1609 (L. peruvianum), LA1739 (L. hirsutum), P25 (L. esculentum), PI134417 (L. hirsutum f. glabratum) and Santa Clara (L. esculentum). LA716 was non-preferred for oviposition by the whitefly, which suggests an antixenotic effect. LA1584 showed an antibiotic resistance because nymphal survival was reduced and nymphal developmental time was increased. Antixenotic resistance was observed in LA1739 and PI134417, based on a reduction of oviposition. PI134417 also reduced nymphal survival, which suggests an antibiotic effect, but LA1739 was suitable for insect development. LA1609 was highly preferred for oviposition, however it reduced insect survival. P25 and Santa Clara (L. esculentum) were highly preferred for oviposition. Tue, 01 Jan 2002 00:00:00 GMT https://www.alice.cnptia.embrapa.br/alice/handle/doc/1185486 2002-01-01T00:00:00Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1185482 Título: Control of tomato bacterial wilt through the incorporation of aerial part of pigeon pea and crotalaria to soil. Autoria: CARDOSO, S. C.; SOARES, A. C. F.; BRITO, A. dos S.; BARBOSA, F. F. L.; LEDO, C. A. da S.; SANTOS, A. P. dos Conteúdo: The use of organic matter that improves the physical, chemical and biological soil properties has been studied as an inducer of suppressiveness to soilborne plant pathogens. The objective of this work was to evaluate the effect of different sources and concentrations of organic matter on tomato bacterial wilt control. Two commercially available organic composts and freshly cut aerial parts of pigeon pea (Cajanus cajan) and crotalaria (Crotalaria juncea) were incorporated, in concentrations of 10, 20 and 30 % (v/v), into soil infested with Ralstonia solanacearum. The soil with the fresh organic matter of pigeon pea and crotalaria was incubated for 30 and 60 days before planting. Tomato seedlings of cv. Santa Clara were transplanted into polyethylene bags with 3 kg of the planting substrate (infested soil + organic matter). The wilting symptoms and percentage of flowering plants were evaluated for 45 days. All evaluated concentrations with incorporation and incubation for 30 days of aerial parts of pigeon pea and crotalaria controlled 100% tomato bacterial wilt. With 60 days of incubation, only the 10 % concentration of pigeon pea and crotalaria did not control the disease. These results suggest that soil incorporation of fresh aerial parts of pigeon pea and crotalaria is an effective method for bacterial wilt control. Sun, 01 Jan 2006 00:00:00 GMT https://www.alice.cnptia.embrapa.br/alice/handle/doc/1185482 2006-01-01T00:00:00Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1185484 Título: Qualidade de frutos de tomateiro com e sem enxertia. Autoria: CARDOSO, S. C.; SOARES, A. C. F.; BRITO, A. dos S.; CARVALHO, L. A.; PEIXOTO, C. C.; PEREIRA, M. E. C.; SOUZA, E. G. Conteúdo: Este trabalho teve como objetivo a caracterização física e físico-química de frutos de tomateiro oriundos de plantas enxertadas em comparação com plantas pés-franco. A enxertia foi realizada utilizando-se o método de fenda cheia tendo o híbrido Hawaii 7996 como porta-enxerto, resistente à murcha bacteriana, e as cultivares Santa Clara e Santa Cruz Kada e o híbrido Débora Plus como enxerto. O delineamento experimental foi em blocos ao acaso, com seis tratamentos (três enxertados e três pés-franco) e cinco repetições de campo. Foram avaliadas as seguintes características: massa média dos frutos, diâmetros transversal e longitudinal, sólidos solúveis totais (SST), pH, acidez total titulável (ATT), e a relação SST/ATT. A enxertia não alterou as características acima descritas para os frutos de tomate, quando comparados aos frutos oriundos de plantas pés-franco, com exceção do pH para as duas cultivares utilizadas. O híbrido 'Hawaii 7996' pode ser utilizado como porta-enxerto com as cultivares comerciais Santa Clara e Santa Cruz Kada e o híbrido Débora Plus, sem prejuízo para a qualidade do fruto do tomateiro. Sun, 01 Jan 2006 00:00:00 GMT https://www.alice.cnptia.embrapa.br/alice/handle/doc/1185484 2006-01-01T00:00:00Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1185483 Título: Morphogenetic response of cotyledon and leaf explants of melon (Cucumis melo L.) cv. Amarillo Oro. Autoria: SOUZA, F. V. D.; GARCIA-SOGO, B.; SOUZA, A. da S.; SAN-JUÁN, A. P.; MORENO, V. Conteúdo: Callus cultures from cotyledon and leaf explants of a Spanish cultivar of melon (Amarillo Oro) were tested for growth and morphogenic capacity on several culture media with different concentrations of IAA (indole-3-acetic acid) in combination with 1.0 mg.L-1 BA (6-benzylaminopurine) or 6.0 mg.L-1 KIN (kinetin). The best results were achieved with cotyledon explants. The leaf explants presented low bud formation capacity. Variability of organogenic response on cotyledons of different age (7, 5, 3 and 1-day-old) was evaluated. The age of explant had a significant influence on bud induction. Cotyledon explants from 7-day-old seedlings showed higher organogenic index and development of shoots when cultured onto MS medium supplemented with 1.5 mg.L-1 of IAA and 1.0 mg.L-1 of BA. The effect of cut type of cotyledonary explants on organogenic response was also investigated. Explants cut transversally showed the best results. The addition of copper sulfate in the culture medium promoted a qualitative improvement of the regenerated shoots. Sun, 01 Jan 2006 00:00:00 GMT https://www.alice.cnptia.embrapa.br/alice/handle/doc/1185483 2006-01-01T00:00:00Z