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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste. |
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Data corrente: |
27/10/2005 |
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Data da última atualização: |
14/11/2008 |
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Autoria: |
VIEIRA, R. de M. |
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Título: |
Moisture exchange and seed quality relationships in blended soybean (Glycine max (L.) Merrill) seed. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
1977. |
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Páginas: |
65 f. |
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Idioma: |
Inglês |
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Notas: |
Thesis (Master of Science) - Faculty of Mississippi State University, Mississippi State. |
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Conteúdo: |
Moisture interchange was investigated in blends os soybean having different moisture content. The blends were sealed in polythylene bags and held at 10 C and in open storage (+- 30 C). In a second experiments, the blends were held in open storage (+- 15 C) but kept in multiwall-paper and sealed polyethylene bags. Responses of the blends to these variables were evaluated in terms of moisture content of each of the blend after various intervals of storage as well standard germination and tetrazolium germination potential for seed quality. To facility separation of the seeds, one portion was dyed and the other left undyed. Separation was accomplished by hand and during this process the seeds were exposed to ambient conditions no more than five minutes. Each blendwas composed of different proportions of "dry" and "wet" seed, however, the average moisture content was 12%. Two kilograms of blended seed were used in each bag. The higher tempearture prevalent in the warehouse during the summer was responsible for more rapid equilibration of moisture content. In all of the blends, a rapid interchange of mositure between the dry and moist component accurred, but exact equalization of moisture content was not obtained due to the hysteresis effect. Most of the change occurred two days following packaging. Subsequent change aoccured at a slower rate with equilibrium being attained from 4 to 40 days depending on storage tempearture and type of packaging. Equilibrium was considered to have been attained when there were no (...) MenosMoisture interchange was investigated in blends os soybean having different moisture content. The blends were sealed in polythylene bags and held at 10 C and in open storage (+- 30 C). In a second experiments, the blends were held in open storage (+- 15 C) but kept in multiwall-paper and sealed polyethylene bags. Responses of the blends to these variables were evaluated in terms of moisture content of each of the blend after various intervals of storage as well standard germination and tetrazolium germination potential for seed quality. To facility separation of the seeds, one portion was dyed and the other left undyed. Separation was accomplished by hand and during this process the seeds were exposed to ambient conditions no more than five minutes. Each blendwas composed of different proportions of "dry" and "wet" seed, however, the average moisture content was 12%. Two kilograms of blended seed were used in each bag. The higher tempearture prevalent in the warehouse during the summer was responsible for more rapid equilibration of moisture content. In all of the blends, a rapid interchange of mositure between the dry and moist component accurred, but exact equalization of moisture content was not obtained due to the hysteresis effect. Most of the change occurred two days following packaging. Subsequent change aoccured at a slower rate with equilibrium being attained from 4 to 40 days depending on storage tempearture and type of packaging. Equilibrium was considered to ha... Mostrar Tudo |
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Thesagro: |
Qualidade; Semente; Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02056nam a2200169 a 4500
001 1251089
005 2008-11-14
008 1977 bl uuuu m 00u1 u #d
100 1 $aVIEIRA, R. de M.
245 $aMoisture exchange and seed quality relationships in blended soybean (Glycine max (L.) Merrill) seed.
260 $a1977.$c1977
300 $a65 f.
500 $aThesis (Master of Science) - Faculty of Mississippi State University, Mississippi State.
520 $aMoisture interchange was investigated in blends os soybean having different moisture content. The blends were sealed in polythylene bags and held at 10 C and in open storage (+- 30 C). In a second experiments, the blends were held in open storage (+- 15 C) but kept in multiwall-paper and sealed polyethylene bags. Responses of the blends to these variables were evaluated in terms of moisture content of each of the blend after various intervals of storage as well standard germination and tetrazolium germination potential for seed quality. To facility separation of the seeds, one portion was dyed and the other left undyed. Separation was accomplished by hand and during this process the seeds were exposed to ambient conditions no more than five minutes. Each blendwas composed of different proportions of "dry" and "wet" seed, however, the average moisture content was 12%. Two kilograms of blended seed were used in each bag. The higher tempearture prevalent in the warehouse during the summer was responsible for more rapid equilibration of moisture content. In all of the blends, a rapid interchange of mositure between the dry and moist component accurred, but exact equalization of moisture content was not obtained due to the hysteresis effect. Most of the change occurred two days following packaging. Subsequent change aoccured at a slower rate with equilibrium being attained from 4 to 40 days depending on storage tempearture and type of packaging. Equilibrium was considered to have been attained when there were no (...)
650 $aQualidade
650 $aSemente
650 $aSoja
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Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
21/07/2021 |
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Data da última atualização: |
21/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SILVA, C. M. de J.; DIAS, R. de C. S.; MELO, N. F. de. |
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Afiliação: |
CARLA MARIA DE JESUS SILVA; RITA DE CASSIA SOUZA DIAS, CPATSA; NATONIEL FRANKLIN DE MELO, CPATSA. |
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Título: |
The effect of temperature and growth regulators on callus induction in watermelon anthers. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Brazilian Archives of Biology and Technology, v. 64, e21180505, 2021. |
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ISSN: |
1678-4324 |
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DOI: |
https://doi.org/10.1590/1678-4324-2021180505 |
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Idioma: |
Inglês |
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Conteúdo: |
Callus induction is one of the pathways required for haploid plant regeneration through anther culture. Pollen viability, as well as the effect of growth regulators and cold pretreatment on anthers of two watermelon lines (Smile and Sugar Baby) to induce callus formation were herein evaluated. Pollen viability was estimated through the staining technique using 2% acetic carmine. Male flower buds were collected and disinfested to allow removal anthers. These anthers were placed on Murashige and Skoog medium, which was supplemented with 2,4-dichlorophenoxyacetic (2,4-D) at 0.0, 0.5, 1.0, 2.0 or 5.0 ?M or with 6-benzylaminopurine at 0.0, 0.5, 1.0, 1.5, or 2.0 ?M, in combination with 2.0 ?M of 2,4-dichlorophenoxyacetic. Anthers were pretreated at 4 °C, for two days and then placed in vitro. Both watermelon lines provided high pollen viability rates (from 93 to 98%). The 2.0 and 5.0 ?M concentrations of 2,4-D stimulated higher friable callus formation. The optimal concentration of 2,4-D was estimated at 3.78 ?M and 4.17 ?M, which had callus induction rates of 64% and 52%, respectively. The combination of 2.0 ?M of 2,4-D and 6-benzylaminopurine did not lead to increased anther response to callus induction. The pre-treatment applied to flower buds at 4 °C enabled callus induction and the anther response to callus induction was genotype-dependent. |
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Palavras-Chave: |
Calogênese de anteras; Viabilidade do pólen. |
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Thesagro: |
Citrullus Lanatus; Cucurbitaceae; Fruta Cucurbitácea; Melancia; Regulador de Crescimento. |
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Thesaurus NAL: |
Growth regulators; Watermelons. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/224590/1/The-effect-of-temperature-and-growth-regulator-2021.pdf
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Marc: |
LEADER 02236naa a2200277 a 4500
001 2133062
005 2021-07-21
008 2021 bl uuuu u00u1 u #d
022 $a1678-4324
024 7 $ahttps://doi.org/10.1590/1678-4324-2021180505$2DOI
100 1 $aSILVA, C. M. de J.
245 $aThe effect of temperature and growth regulators on callus induction in watermelon anthers.$h[electronic resource]
260 $c2021
520 $aCallus induction is one of the pathways required for haploid plant regeneration through anther culture. Pollen viability, as well as the effect of growth regulators and cold pretreatment on anthers of two watermelon lines (Smile and Sugar Baby) to induce callus formation were herein evaluated. Pollen viability was estimated through the staining technique using 2% acetic carmine. Male flower buds were collected and disinfested to allow removal anthers. These anthers were placed on Murashige and Skoog medium, which was supplemented with 2,4-dichlorophenoxyacetic (2,4-D) at 0.0, 0.5, 1.0, 2.0 or 5.0 ?M or with 6-benzylaminopurine at 0.0, 0.5, 1.0, 1.5, or 2.0 ?M, in combination with 2.0 ?M of 2,4-dichlorophenoxyacetic. Anthers were pretreated at 4 °C, for two days and then placed in vitro. Both watermelon lines provided high pollen viability rates (from 93 to 98%). The 2.0 and 5.0 ?M concentrations of 2,4-D stimulated higher friable callus formation. The optimal concentration of 2,4-D was estimated at 3.78 ?M and 4.17 ?M, which had callus induction rates of 64% and 52%, respectively. The combination of 2.0 ?M of 2,4-D and 6-benzylaminopurine did not lead to increased anther response to callus induction. The pre-treatment applied to flower buds at 4 °C enabled callus induction and the anther response to callus induction was genotype-dependent.
650 $aGrowth regulators
650 $aWatermelons
650 $aCitrullus Lanatus
650 $aCucurbitaceae
650 $aFruta Cucurbitácea
650 $aMelancia
650 $aRegulador de Crescimento
653 $aCalogênese de anteras
653 $aViabilidade do pólen
700 1 $aDIAS, R. de C. S.
700 1 $aMELO, N. F. de
773 $tBrazilian Archives of Biology and Technology$gv. 64, e21180505, 2021.
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