https://www.alice.cnptia.embrapa.br/alice/handle/item/214 Artigo em periódico indexado (CNPMF) Thu, 07 May 2026 04:48:34 GMT 2026-05-07T04:48:34Z https://www.alice.cnptia.embrapa.br/alice/handle/doc/1186619 Título: Sample size matters: optimizing fruit sampling for reliable quality assessment in sweet orange varieties Autoria: CALDAS, M. J. M.; SASAKI, F. F. C.; RODRIGUES, V. da S.; SANTANA, L. G. L.; LEDO, C. A. da S.; GESTEIRA, A. da S.; PASSOS, O. S.; SOARES FILHO, W. dos S. Conteúdo: ABSTRACT: This study aimed to determine the optimal sample size of fruits from sweet orange varieties for the evaluation of their physical and chemical quality attributes. Twenty ripe fruits from the following varieties, namely, Diva, Hamlin CNPMF-020, Pera CNPMF-D6, Uruburetama Blood, and Valência Tuxpan CNPMF were used. The variables assessed included fruit mass, longitudinal and transverse diameters, juice mass and yield, peel color and thickness, soluble solids content, titratable acidity, the soluble solids/titratable acidity ratio (SS/TA), and a technological index. The experimental design was completely randomized, with individual analysis of each fruit. Data were analyzed using the Modified Maximum Curvature Method with the aid of the R statistical software. The optimal minimum number of fruits varied according to variety and variable. The smallest required sample sizes were four fruits for Pera CNPMF-D6, six fruits for Diva and Uruburetama Blood, and seven fruits for Valência Tuxpan CNPMF and Hamlin CNPMF-020. Therefore, a standardized sample size of seven fruits is recommended for studies based on the physicochemical quality of sweet orange varieties, to ensure sufficient precision and statistical reliability under the conditions of this study. Thu, 01 Jan 2026 00:00:00 GMT https://www.alice.cnptia.embrapa.br/alice/handle/doc/1186619 2026-01-01T00:00:00Z 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