Temperatura de secagem e qualidade de sementes de arroz

Vergara, Rafael de Oliveira; Monteiro, Rita de Cassia Mota; Gadotti, Gizele Ingrid; Moreira, Isabella Brandão

doi:10.34117/bjdv6n4-424

Cited by 3 publications

(4 citation statements)

References 1 publication

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“…For a higher SL (1.38 cm), a period of 94.20 h at a temperature of 42.82 °C is required (Figure 4). The data obtained in the present study are similar to those reported by Vergara et al (2020), who studied the cultivar IRGA 424 RI and observed that the temperature of 40 °C became more promising to evaluate seedling length, germination percentage, and first count values.…”

Section: Resultssupporting

confidence: 90%

Pre-drying periods and temperatures to overcome dormancy of rice seeds of the cultivar IRGA 431 CL

Kleinpaul,

Nunes,

Ludwig

et al. 2024

J. Seed Sci.

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Rice seeds have a dormancy which is understood as resistance to pre- and post-harvest germination. Thus, the present study aims to evaluate periods and temperatures in the pre-drying of rice seeds (cultivar IRGA 431 CL) to overcome dormancy. An experiment was carried out in a completely randomized design at the Didactic and Seed Research Laboratory, at the Federal University of Santa Maria. Three lots of the cultivar IRGA 431 CL were used. For the present study, temperatures of 35, 40, 45, 50 and 55 °C in a forced-air circulation oven were used to overcome seed dormancy. At each temperature the seeds remained for periods of 24, 48, 72, 96, 120, 144 and 168 h. First count, germination, and seedling root and shoot lengths were evaluated in the experiment. The data obtained were subjected to analysis of variance and compared by response surface. Temperature between 41 and 44 °C for a period of 95 h is more indicated to overcome dormancy in seeds of the IRGA 431 CL cultivar in a forced-air circulation oven.

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Section: Resultssupporting

confidence: 90%

Pre-drying periods and temperatures to overcome dormancy of rice seeds of the cultivar IRGA 431 CL

Kleinpaul,

Nunes,

Ludwig

et al. 2024

J. Seed Sci.

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“…The initial quality of the orthodox seeds is essential for success in an ex situ conservation, as it is able to align production, processing, and seed removal, with subsequent conservation (Vergara et al, 2020). The aging of seeds is inexorable, resulting in a drop in vigor and subsequent death (Garcia et al, 2014;Rocha et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Seed Longevity of Enterolobium contortisiliquum (Vell.) Morong

et al. 2020

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Seed storage under controlled temperature and humidity maintains the viability and the vigor of seeds for a long time while preserving their longevity. Ex situ conservation in a seed storage chamber is perfect for simulating the cool dry conditions that are associated with long-term seed storage. This helps to preserve the availability of seeds for the recovery of degraded areas and to ensure a supply of propagating material for various purposes in silvicultural production, or as raw materials for biotechnological use. The present work evaluated the physical and physiological quality of Enterolobium contortisiliquum (Vell.) Morong seeds from an ex situ collection that was kept in a seed storage chamber at 6 °C ± 3 °C and with 60% ± 5% of RH in waterproof packaging. The water content, the physical quality by X-ray tests, germination, electrical conductivity, and the integrity and quality of RNA that was extracted from the embryonic axes were all determined. It was possible to identify full, damaged, malformed, translucent, and empty seeds. The seeds that had been stored for 1, 5, 9, and 10 years presented 78, 82, 42, and 38% of normal seedlings, respectively, while the lots of 6 and 7 years presented 0 and 6%. The seed storage conditions were the same for all of the lots. A water content higher than 6% influenced the quality of the seeds. The E. contortisiliquum seeds demonstrated high longevity. They could be stored for up to 10 years under controlled conditions.

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“…Therefore, good seeds may improve yield significantly. The use of high quality seeds significantly influences crops yield components, which can cause an increase of up to 15% in productivity when compared to low quality seeds (Bagateli et al, 2019;Vergara et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…In order to obtain high quality seeds, the different stages of production process must be observed, highlighting, initial quality of seed obtained in field, drying and processing and the storage environment. The association of these stages determines the production of seeds of superior quality (Vergara et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Pre-harvest glyphosate desiccation on barley seed quality

Pagliarini

Reboucas

Monaco-Mello

et al. 2021

RSD

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The experiment was conducted into two stages, the first being the barley seed production and application of glyphosate and the second the vigour tests in the laboratory. Both stages were performed at the Experimental Farm of Agrarian Sciences at Grand Dourados Federal University (UFGD). In field, four cultivars of barley was sowing being: BRS Cryst, BRS Kallibre, BRS Demeter, BRS Sampa. For desiccation, the glyphosate herbicide (480 g L-1 of active ingredient) was used, applied using a backpack sprayer at dose of 5 L ha-1. The experimental design used was randomized blocks, and each cultivar was divided into five replications, applying the herbicide in four of them leaving one without application for control. The application was made when seeds presented water content close to 50%. At second stage, eight evaluation were made being one at the day of glyphosate application, one, two, three, eight, ten and fourteen days after application and without application in natural physiological maturity. In each evaluation, sowing was performed according to Rules to Seed Analysis. The analyses were: First count, percentage of germination, germination speed index, mean germination time, mean germination speed, accelerated aging and synchronization index. Glyphosate has interfered negatively in the physiological maturation of barley seeds when the herbicide was applied in pre-harvest. The results obtained showed that there was an increase in seeds germination after 14 days of application, however, the means were significantly smaller in relation to seeds harvested at the point of physiological maturation without glyphosate application.

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Temperatura de secagem e qualidade de sementes de arroz

Abstract: Temperatura de secagem e qualidade de sementes de arroz drying temperature and rice seed quality

Cited by 3 publications

References 1 publication

Pre-drying periods and temperatures to overcome dormancy of rice seeds of the cultivar IRGA 431 CL

Pre-drying periods and temperatures to overcome dormancy of rice seeds of the cultivar IRGA 431 CL

Seed Longevity of Enterolobium contortisiliquum (Vell.) Morong

Pre-harvest glyphosate desiccation on barley seed quality

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