Qualidade de sementes de pitombeira em função do período e da temperatura de secagem

Cardoso, Edson Almeida; Alves, Edna Ursulino; Alves, Arnaud Azevêdo

doi:10.5433/1679-0359.2015v36n1p7

Cited by 6 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, when the seeds were placed to dry at 50 °C, there is a reduction in root length of 7.5 cm to 12 cm within 24 h of drying. The results obtained can be seen that the seeds of this species are sensitive to desiccation, probably committed the seeds tissues, which is mainly reserve, resulting in lower transfer to the seedling growth (CARDOSO et al, 2015). The length of the seedlings aerial part derived from seeds of C. fairchildiana submitted to different periods of drying ( Figure 6) initially there was an increase in shoot length (8.67 cm), at 35 °C and decreased to (4.64 cm) after 14 h of drying, while in the temperature of 40 °C was achieved a length (6.68 cm) after 6 h of drying.…”

Section: Resultsmentioning

confidence: 74%

Potential physiological seed Clitoria fairchildiana howard in time function and drying temperature

Alves¹,

Alves²,

Silva³

et al. 2015

Biosci. J.

Self Cite

View full text Add to dashboard Cite

ABSTRACT:The species Clitoria fairchildiana Howard, native to the Amazon region, by a rustic species and be of rapid growth, has been useful in heterogeneous reforestation for the reclamation of degraded areas, used in the planting of streets, public squares, roads and parking lots, due to its wide, leafy canopy and its rapid growth. The work was developed in the Laboratory of Analyses of Seeds of Centro de Ciências Agrárias of Universidade Federal da Paraíba. Thus, this study aimed to evaluate the physiological potential of C. fairchildiana seeds submitted to different drying times. The experimental design completely randomized, with treatments distributed in a factorial 4 x 5 (temperatures and periods of drying). It was evaluated to determine the water content after the drying processing for each period (0, 6, 12, 18 and 24 hours). For the evaluation of the effect of temperatures (35, 40, 45 and 50 °C) were performed the following tests: water content, germination, germination speed index (IVG), as well as length and dry mass of roots and aerial portion of seedlings. Drying of seeds of C. fairchildiana is recommended at the temperature of 35 °C, within drying 6 hours without compromising the physiological quality of seeds.

show abstract

Section: Resultsmentioning

confidence: 74%

Potential physiological seed Clitoria fairchildiana howard in time function and drying temperature

Alves¹,

Alves²,

Silva³

et al. 2015

Biosci. J.

Self Cite

View full text Add to dashboard Cite

show abstract

“…18, 4.38, 0.80, 12.13, 38.36, 109, and 542, respectively. The main factors that affect seed germination and consequently the emergence of T. esculenta seedlings are the fermentation period for pulp removal, the drying period, and temperature (Alves, Silva, Gonçalves, Cardoso, & Alves, 2009;Cardoso, Alves, & Alves, 2015). The difference in the volume of the container for the production of seedlings did not affect the emergence of Hancornia speciosa Gomes (A.…”

Section: Effects Of Container Volumementioning

confidence: 97%

Physiology in Talisia esculenta seedlings under irrigation with saline water on substrate with hydrogel

Bezerra

Nascimento

et al. 2022

Semina: Ciênc. Agrár.

View full text Add to dashboard Cite

Salinity interferes in the physiology of seedlings from germination and seedling emergence, so it is necessary to adopt measures to mitigate its effects. The objectives of this research were to evaluate irrigation frequency, saline water, polymer, and container volume in the emergence and physiology of Talisia esculenta (A. St.-Hil.) Radlk. The treatments were obtained from the combination of polymer doses (0.0; 0.2; 0.6; 1.0; and 1.2 g dm-3), electrical conductivities of the irrigation water (0.3; 1, 1; 2.7; 4.3; and 5.0 dS m-1), and irrigation frequencies (daily and alternate), plus two additional treatments to assess the volume of the container. A randomized block design was used. Emergence and leaf indices of chlorophyll, fluorescence, and gas exchange were analyzed 100 days after sowing. The increase in electrical conductivity reduced and delayed seedling emergence. Decreasing irrigation frequency reduced the chlorophyll b index, stomatal conductance, transpiration, net CO2 assimilation, and carboxylation efficiency. The magnitude of the effects of electrical conductivity of water and polymer were associated with the frequency of irrigation. However, both salinity and polymer reduced practically all physiological variables. The reduction in container volume also affected the physiology of the seedlings, with more effects when irrigated on alternate days. The T. esculenta seedlings are considered sensitive to salinity, should be irrigated daily with water with less electrical conductivity than 1.0 dS m-1, as well as higher capacity containers used (0.75 vs 1.30 dm3).

show abstract

“…According to Alves et al (2015), the most durable drying process carried out with low temperatures, shakes the integrity of the grains less. This temperature is traditionally used for seed drying, as it preserves the quality and vigor of the product (CARDOSO et al, 2015).…”

Section: Development and Its Applications In Scientific Knowledgementioning

confidence: 99%

Variations in the physical properties of soybeans during the drying process and changes in the classification of soybeans stored with different temperatures and evaluation methodologies

Cãndido¹,

Taveira²,

Costa³

et al. 2023

Development and Its Applications in Scientific Knowledge

View full text Add to dashboard Cite

The objective of this study was to evaluate the effect of drying at different temperatures on the physical properties of the grains; water content, volumetric contraction, the weight of thousand grains, apparent specific mass, length, width, thickness, circularity, sphericity, and comparison of methodologies of soybeans. To evaluate the physical properties, the soybean grain samples with an initial water content of 19.06% b.u. were subjected to the effects of drying air temperatures heated to 40ºC, 55ºC, 70ºC, and 85ºC. The samples were dried in a conventional natural convection oven until reaching 19% water contents, 17%, 15%, 13%, and 11% b.u. Subsequently, the drying curve of soybeans dried under different temperatures was characterized and the physical properties of an apparent specific mass, the weight of one thousand grains, and volumetric contraction were analyzed. It was noted that the increase in temperature affected the three-dimensional axes of the grains, causing them to lose water to the drying air. However, when these grains are dried at high temperatures spending less time, their characteristics are modified. The weight of the grains and the apparent specific mass decreased with increasing temperature during drying. The circularity, sphericity, and unit volume decreased with the increase in temperature during drying, therefore, it is not possible to use the new proposal of digital methodology instead of manual measurement, since the correlation between the two methodologies is close to zero. For the conditions under which the experiment was carried out, it can be concluded that with the increase in the temperature of the drying air, the grains dry faster, and yet the physical dimensions are more preserved, not being intensely reduced throughout the process.

show abstract

Qualidade de sementes de pitombeira em função do período e da temperatura de secagem

Cited by 6 publications

References 13 publications

Potential physiological seed Clitoria fairchildiana howard in time function and drying temperature

Potential physiological seed Clitoria fairchildiana howard in time function and drying temperature

Physiology in Talisia esculenta seedlings under irrigation with saline water on substrate with hydrogel

Variations in the physical properties of soybeans during the drying process and changes in the classification of soybeans stored with different temperatures and evaluation methodologies

Contact Info

Product

Resources

About