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Marrocos S.T.P.,UFERSA | de Medeiros M.A.,UFERSA | Grangeiro L.C.,UFERSA | Torres S.B.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | de Lucena R.R.M.,Engineering Agr
Revista Brasileira de Sementes | Year: 2011

The objective of this study was to determine the physiological maturity of buttennut squash seeds, cv. Menina Brasileira, in relation to fruit age. Seeds from fruits collected at 20, 30, 40, 50 and 60 days after anthesis (DAA) were used. The squash plants were grown on the central campus of the Universidade Federal Rural do Semiárido, Mossoró, RN - Brazil, from December 2007 to March 2008. The harvested fruits were rested prior to seed extraction and determination of the water content and dry weight. The physiological quality of the seeds was evaluated from tests of germination, germination first count, emergence speed index and accelerated aging. The seed water content decreased from 76% to 49% during the study period. The seed physiological quality increased with fruit age, reaching physiological maturity at about 60 DAA. The fruits may be harvested between 50 and 60 DAA.


Cruz A.F.,Federal Rural University of Pernambuco | Passos M.A.A.,Federal Rural University of Pernambuco | Da Silva Jose A.A.,Federal Rural University of Pernambuco | Torres S.B.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | De Oliveira I.S.,University of Pernambuco
Scientia Forestalis/Forest Sciences | Year: 2012

This study aimed at defining procedures for acceptable analytical methods for the germination of the Bowdichia virgilioides Kunth (sucupira) species, with seeds from selected trees in the Atlantic Forest biome. Substrates used were sand, blotting paper (BP), vermiculite, germitest paper and paper towels (PT). Germination was tested at the following temperatures: constant 25° C and 30° C and alternating temperatures of 20-30° C. The luminosity was analyzed by the influence of continuous light or lack of it. The statistical design was completely randomized 3 × 4 × 2 (3 temperatures, 4 substrates and 2 light environments). All treatments had four replicates containing 25 seeds each. The evaluated characteristics were: germination, first counting, germination speed index (GSI) of seedlings and number of normal seedlings. Germination was assessed daily by direct counting on two occasions: first the radicle emerging and then the formation of normal seedling, this last one in accordance with the provisions of the RAS. Vermiculite interacting with the constant temperatures of 25 and 30 °C plus the paper towel at the temperature of 30° C provided the best germination results with normal seedlings. Therefore, it was the most suitable treatment to analyze the germination and early growth of seedlings for this species.


da Silva J.G.M.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | Lima G.F.C.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuaria | de Aguiar E.M.,Federal University of Rio Grande do Norte | de Melo A.A.S.,Federal Rural University of Pernambuco | Rego M.M.T.,Federal University of Rio Grande do Norte
Revista Caatinga | Year: 2010

The objective of this study was to evaluate the utilization effects of two native cacti named mandacaru (Cereus jamacaru DC.) and xiquexique [Pilosocereus gounellei (A. Weber ex K. Schum.) Bly ex Rowl.] associated with sabiá (Mimosa caesalpiniifolia Benth.) and flor de seda (Calotropis procera (Ait.) R.Br.) about the nutrient intake, daily weight gain, and feed conversion in sheep feedlot. Twenty Morada Nova male hair sheep with an average weight of 15.40, were allocated in a randomized block design, with four treatments and five replicates. The experimental treatments consisted of four diets (30% native cacti + 30% shrub hay + 40% concentrate, on dry matter basis): T1- xiquexique + sabiá hay; T2- xiquexique + flor de seda hay; T3- mandacaru + sabiá hay e T4- mandacaru + flor-de-seda hay. The concentrate consisted of 100.0% algarroba (Prosopis juliflora (Sw) DC) pods. No significant difference was observed for daily weight gain which averaged 88.77 g, and also for voluntary intakes of dry matter, organic matter, ether extract, total carbohydrates, nonfiber carbohydrates, total digestible nutrients and digestible energy in relation to g/day, %BW and g/kg0.75. Significant differences were observed for intake of water in g/day.


de Oliveira F.N.,UFERSA | Torres S.B.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | Bebedito C.P.,UFERSA
Revista Caatinga | Year: 2011

The objective of this work was to assess the agronomic performance and plant morphological traits of eight lima-bean (Phaseolus lunatus L.) accessions in the edafoclimatic conditions of Mossoró, RN, Brazil. A randomized complete blocks design with eight treatments and four replications was used. The treatments consisted of the BSF 01, BSF 02, BSF 04, BSF 07, BSF 08, BSF 08A, BSF 12 and BSF 15 lima-bean accessions. The following traits were evaluated: growth habit, mean time of blooming, pod length and width, number of pods per plant, number of seeds per pod, weight of 100 seeds and seed yield. It was observed that all lima-bean accessions were of indeterminate growth habit, except for BSF 07B and BSF 12 that show determinate growth habit. BSF 12 and BSF 15 accessions were, respectively, the earliest and the largest seed size. They was not distinction between the lima-bean accessions for pod length, but significant differences were observed on pod width, with BSF 12 and BSF 02 accessions showing the highest and the less width. The accession BSF 01 can be the best alternative for Mossoró country growers because this material had higher number of pods per plant and higher seed yield. The accessions BSF 04, BSF 07B and BSF08 are potentially useful for lima-bean because these materials had higher number of pods per plant, higher seed yield and characteristics of pods satisfactory.


da Silva J.G.M.,Empresa de Pesquisa Agropecuaria do Rio Grande do Norte EMPARN | de Melo A.A.S.,Federal Rural University of Pernambuco | Rego M.M.T.,Federal University of Rio Grande do Norte | da Costa Lima G.F.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuaria | de Aguiar E.M.,Federal University of Rio Grande do Norte
Revista Caatinga | Year: 2011

The objective of this study was to evaluate the utilization effects of two native cacti named mandacaru (Cereus jamacaru DC.) and xiquexique [Pilosocereus gounellei (A. Weber ex K. Schum.) Bly ex Rowl.] associated with sabiá (Mimosa caesalpinifolia Benth.) and flor de seda (Calotropis procera (Ait.) R.Br.) shrub hays on nutrient intake, milk production and composition of Saanen dairy goats'. Eight goats averaging 43.4 kg were used in two 4x4 latin square experimental design. The experimental treatments consisted of four diets (30% native cacti + 30% shrub hay + 40% concentrate, on dry matter basis): Xiquexique + flor de seda hay; xiquexique + sabiá hay; mandacaru + flor de seda hay and mandacaru + sabiá hay. The ingredients proportion of the concentrate in the diet was 57.5% algaroba (Prosopis juliflora (Sw) DC); 37.5% soybean meal and 5% mineral mixture. Significant differences were observed for voluntary intakes of dry matter, organic matter, ether extract, neutral detergent fiber, acidy detergent fiber, total carbohydrates, nonfiber carbohydrates and total digestible nutrients in relation to g/day and g/kg0.75. No significant differences were observed for milk production (averaged 1,294.39 g/day), and milk composition.

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