Secagem e armazenamento de sementes de Anadenanthera peregrina var. falcata (Benth.) Altschul e A. colubrina (Vell.) Brenan var. cebil (Griseb.) Altschul

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Bases fisiológicas para a conservação a longo prazo de sementes Cariniana legalis (Mart.) O. Kuntze

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Testes de vigor em sementes de quiabeiro

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Disponibilidade hídrica na germinação de sementes e no crescimento de plântulas da leguminosa forrageira Macrotyloma axillare (E. Mey) Verdc. cv. Java

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Revestimento de sementes de milho superdoce

Pós-graduação em Agronomia - FCAV

Critérios para o estabelecimento dos períodos de interferência das plantas daninhas em cultivares de feijão e uso de glyphosate na pré-colheita

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Coberturas vegetais e adubação fosfatada no desenvolvimento e produtividade do feijoeiro cultivado no período de inverno em sistema plantio direto

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Teste de alagamento, deterioração controlada e envelhecimento acelerado para avaliação do vigor de sementes de feijão

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Manejo do nitrogênio no feijoeiro de inverno em sucessão a milho e Brachiaria em sistema plantio direto

Pós-graduação em Agronomia - FEIS

Opções de plantas de cobertura, épocas e doses de aplicação de nitrogênio na implantação do feijoeiro em sistema plantio direto

Pós-graduação em Agronomia - FEIS

Teste de condutividade elétrica em sementes de Bowdichia virgilioides Kunth

The aim of this study was to adapt the methodology of electrical conductivity (EC) test and determine the physiological quality of seeds of B. virgilioides. Seeds were separated into three batches according to tegument color (1-yellow, 2-orange, and 3-red/black). The EC test analyzed three quantities of seeds (25, 50 and 100), three volumes of water (25, 50 and 100 mL), and six times of seed imbibition (12, 24, 36, 48, 60 and 72), at 25 °C with 6 replications. Germination test was employed to compare the results. The EC test allowed the differentiation of batches in three levels of vigor - the same was observed in germination test: batch 1 presented the best seed vigor, followed by batches 2 and 3. The use of 25, 50 or 100 seeds imbibed in 50 mL of water for 24 hours is recommended.

Seleção de progênies de nabo-forrageiro para germinação sob altas temperaturas

Due to the expansion of the wild crop to regions with higher temperatures is important to develop cultivars adapted to high heat. The aim was to select tests for evaluating seed physiological quality of wild radish to estimating genetic characters in order to select cultivars adapted to high temperature conditions. Hundred of half-brothers of wild radish were subjected to germination test and vigor (first count of germination, classification of seedling vigor, accelerated aging test, germination and testing of the first count at high temperature as well as seedling emergence in field. The germination test, first count test, accelerated aging and high germination test (20-35°C) can be used for the selection of wild radish crop populations adapted to germination and field emergence under high temperatures.

Testes para a seleção de populações de cenoura visando ao vigor e à longevidade das sementes

Populations of carrot seeds with superior physiological quality and storage potential are of interest to seed companies and growers. Thus, we verified the efficiency of some tests for the selection of carrot populations with greater vigor and longevity of seeds. Seeds of 50 carrots progenies of different half-brothers from Brasilia cultivar were evaluated for the mass of one hundred seeds, the first count, germination, dormancy, accelerated aging with water and saturated NaCl solution. The seeds were stored at moisture contents of 6.1±0.3% in hermetic packaging at temperatures of 15 and 25°C for 12 months and germination was evaluated quarterly. The experimental data were evaluated for variance and phenotypic, genotypic and environmental heritability, coefficient of variation and genetic gain from selection. Selection based on the mass should not be used because it would increase the occurrence of dormancy in seeds of the next generation. The test of the first count, germination and accelerated aging in water or saline solution saturated may be used to select populations of carrot seeds of higher vigor and longevity. The estimated gain genetic selection for germination after 12 months storage at 25°C was 14%.

Sequential sampling of soybean and beans seeds for Sclerotinia sclerotiorum detection (Lib.) DeBary

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Divergência genética entre árvores matrizes de Ceiba speciosa St. Hil. para características de frutos e sementes

Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV