scholarly journals Sanitary and physiological quality of ‘purple’ corn (Zea mays L.) seeds submitted to thermotherapy

2019 ◽  
Vol 86 ◽  
Author(s):  
Hugo Vieira ◽  
João Victor da Silva Martins ◽  
Gabriel Ginane Barreto ◽  
Rommel dos Santos Siqueira Gomes ◽  
Edcarlos Camilo Silva ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Zea Mays ◽  
Zea Mays L ◽  
Hot Water ◽  
Randomized Experimental Design ◽  
Physiological Quality ◽  
Purple Corn ◽  
Aspergillus Sp ◽  
Good Productivity

ABSTRACT: The use of seeds with good sanitary and physiological potential ensures the establishment of the crop, with a uniform, vigorous and disease-free seedling stand, which will result in good productivity levels. Seen that, the objective was to evaluate the sanitary and physiological quality of purple corn seeds (Zea mays L.) submitted to thermotherapy. They were subjected to heat treatment with immersion in sterile distilled water (SDW) heated at 50, 60 and 70 °C for 1, 2, and 3 minutes. The control (0 min) correspondens only to immersing the seeds in SDW, which were submitted to sanitary and germination tests in a completely randomized experimental design, in a factorial arrangement 3 × 3 + 1 (exposure time × temperature + additional control). Data were subjected to analysis of variance, and the means were compared with the Scott-Knott test up to 5% of probability, with the aid of the statistical program SISVAR®. Immersing Zea mays seeds in hot water at 50, 60 and 70 °C for 1, 2, and 3 minutes is efficient to prevent the increased incidence of Aspergillus sp., Penicillium sp., and Fusarium sp. The heat treatment at 60 °C for 1 and 2 minutes of immersion reduces the incidence of fungal mycoflora without impairing the physiological quality of seeds.

scholarly journals QUALIDADE FÍSICA E FISIOLÓGICA DE SEMENTES DE MILHO (Zea mays L.) APÓS ARMAZENAMENTO

2020 ◽  
Vol 35 (2) ◽  
pp. 276-286
Author(s):  
GICELLY DA SILVA MAIA ◽  
WALDENICE LEITE PINHEIRO ◽  
FRANCINETE DE ALMEIDA E ALMEIDA ◽  
JOSÉ RENAN DA SILVA E SILVA ◽  
MAGNUN ANTONIO PENARIOL DA SILVA
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Corn Hybrids ◽  
Tukey Test ◽  
Agricultural Performance ◽  
Randomized Design ◽  
Seedling Length ◽  
Physiological Quality ◽  
Germination Vigor

QUALIDADE FÍSICA E FISIOLÓGICA DE SEMENTES DE MILHO (Zea mays L.) APÓS ARMAZENAMENTO   GICELLY DA SILVA MAIA¹, WALDENICE LEITE PINHEIRO², FRANCINETE DE ALMEIDA E ALMEIDA³, JOSÉ RENAN DA SILVA E SILVA4, MAGNUN ANTONIO PENARIOL DA SILVA5                                                1 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected]  2 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 3 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 4 Graduando em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 5 Orientador. Professor Adjunto C da Universidade Federal Rural da Amazônia, Campus de Tomé-Açu, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected]   RESUMO: A cultura do milho (Zea mays L.) possui grande importância para a economia mundial e sementes com alto potencial fisiológico são premissas para um bom desempenho produtivo agrícola. Os sistemas de armazenamento objetivam manter a viabilidade das sementes, controlando fatores como umidade e temperatura, principais causas de deterioração. Logo, avaliar o vigor de sementes e seu potencial germinativo, visando como se estabelecerão em campo, é essencial para o controle da qualidade. O presente trabalho buscou avaliar o potencial germinativo e vigor de sementes de quatro híbridos de milho, armazenados em embalagens de papel multifoliado, a partir dos testes de germinação e frio. Foram também avaliados o teor de água, índice de velocidade de germinação, tempo médio de germinação e comprimento de plântulas. Utilizou-se o delineamento inteiramente casualizado, com 4 tratamentos e 4 repetições, os resultados foram submetidos ao teste de Tukey (p < 0,05). O híbrido X2 safra 18/18 com vencimento em junho de 2019, apresentou potencial próximo ao indicado pelo fabricante, os demais não alcançaram o percentual mínimo de germinação apontado pelo fabricante. O armazenamento inadequado das embalagens após abertas podem ter reduzido sua eficácia na conservação das sementes, resultando na redução do potencial fisiológico das sementes de milho.   Palavras-chave: embalagens, germinação, vigor.   PHYSICAL AND PHYSIOLOGICAL QUALITY OF CORN SEEDS (Zea mays L.) AFTER STORAGE   ABSTRACT: The culture of corn (Zea mays L.) has a great importance for worldwide economy and seed with high physiological potential is a premise for good agricultural performance. The storage systems aim to maintain the viability of the seeds, controlling factors such as humidity and temperature, the main causes of deterioration. Therefore, evaluate the vigor of seeds and their germinative potential, aiming at how they will be established in the field is essential for quality control. The present work sought to evaluate the germinative potential and vigor of seeds of four corn hybrids stored in multifoliate paper, based on germination and cold tests. Also applied were: water content, germination speed index, average germination time and seedling length. The randomized design was used, with 4 treatments and 4 repetitions, the results were submitted to Tukey test (p < 0,05). The hybrid X2 crop 18/18, maturing in June 2019, show the next potential indicated by the manufacturer, the rest not achieved or the minimum percentage of germination indicated by the manufacturer. Reduced storage of packages, after opening, can reduce physiological potential of corn seeds.   Keywords: packaging, germination, vigor.

scholarly journals Effects of chemical and bio-fertilizers on yield, yield components and grain quality of maize (Zea mays L.)

2016 ◽  
Vol 11 (45) ◽  
pp. 4654-4660 ◽  
Author(s):  
A. Fadlalla Hashim ◽  
A. A. Abukhlaif Hatim ◽  
S. Mohamed Somaya
Keyword(s):  
Zea Mays ◽  
Yield Components ◽  
Grain Quality ◽  
Zea Mays L

Improving the mineral reserves and protein quality of maize (Zea mays L.) kernels using unique genes

1993 ◽  
Vol 155-156 (1) ◽  
pp. 215-218 ◽  
Author(s):  
R. M. Welch ◽  
M. E. Smith ◽  
D. R. van Campen ◽  
S. C. Schaefer
Keyword(s):  
Zea Mays ◽  
Protein Quality ◽  
Zea Mays L ◽  
Unique Genes ◽  
Mineral Reserves

scholarly journals Genetic diversity for physiological quality of seeds from corn (Zea mays L.) intervarietal crossbreeds

2013 ◽  
Vol 35 (4) ◽  
pp. 449-456 ◽  
Author(s):  
Daniele Nerling ◽  
Cileide Maria Medeiros Coelho ◽  
Rubens Onofre Nodari
Keyword(s):  
Genetic Diversity ◽  
Zea Mays L ◽  
Accelerated Aging ◽  
Genetic Contribution ◽  
Percentage Germination ◽  
Canonical Variables ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality

The physiological quality is based on the genotype and may be accompanied since the first stages of selection through the study of genetic diversity. The purpose of this study was to evaluate the parental genetic contribution in the seed physiological quality in corn intervarietal crossbreeds. The intervarietal crossbreeds were performed using landraces genotypes, open pollinated varieties and commercial hybrids. The seeds obtained from the crossbreed, their equivalents and parentals were evaluated regarding their water percentage, germination, germination speed rate, accelerated aging, field emergence and electrical conductivity. The seeds obtained in the crossbreed are viable and vivid with heterosis when compared with the parentals. The accelerated aging test was more effective for selecting the strongest genotypes. The canonical variables were useful to group the genotypes that presented similar physiological characteristics. The genotypes MPA 01 x Pixurum 05, MPA 01 x AS1565, MPA 01 x SJC5886, SJC5886 x Pixurum 05 and Fundacep 35 x SCS 154 Fortuna were the best crossbreeds regarding the production of better physiological quality seeds.

scholarly journals Assessment of Nutritive Quality of Maize (Zea mays L.) Produced and Stocked from Rural Conditions in Côte d’Ivoire

2021 ◽  
pp. 22-32
Author(s):  
Kouamé Désiré ◽  
Biego Henri Marius ◽  
Niamketchi Gilles Léonce ◽  
Konan Ysidor ◽  
Sidibé Daouda
Keyword(s):  
Zea Mays ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Zea Mays L ◽  
Laboratory Unit ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Nutritive Quality ◽  
Significant Difference

Aims: Maize (Zea mays L.) is a major staple food for millions of people in Côte d’Ivoire. Due                         to its high productivity and low cost of calorie it is preferred crop for food security of the                      country. Thus, this study was conducted to assess nutritive quality of maize produced and               stocked in five purposively selected regions of Côte d’Ivoire which represents five agroecological settings. Study Design: A total of 1500 samples of maize as grains, epis and spathes were collected at rate of 500 samples by region (Gbêkê, Poro, Hambol, Indénié-Djuablin and Gontougo) and sent to the laboratory in order to analyse their nutritional quality. Place and Duration of Study: This study was carried out during March 2016 to January 2017. The collected sample were carried out at the laboratory unit of Food Sciences and Biochemistry of the Félix Houphouët-Boigny University, Abidjan. Methodology: Proximate analyses were carried out using standard methods AOAC (2000). Results: The results show significant difference from the biochemical compositions of maize type and region. Mean value intervals were as follow: dry matter (85.83 – 91.42%), ash (1.19 - 2%), proteins (7.99 - 9.32), lipids (3.21 - 4.47), carbohydrates (71.80 - 77.94), starches (62.30 - 68.44%), fibers (5.03 - 5.83%), total sugars (2,13 - 2.99%), reducing sugars (0.33 - 0.66%), free fat acidity (1.86- 4.50%), peroxide value (1.34 - 3.07 meq O2/kg), iodine value (100.93 - 130.56 g I2/100 g), unsaponifiable (0.89 - 1.54%) and energy values (357.88 - 374.39 kcal). Conclusion: A significant variability from one region to another can be noticed at level of maize quality regardless the type of maize. The nutritive quality of maize seems to be tied to postharvest treatments (drying), type of storage (epis, grains and spathes) and structure of storage.

scholarly journals Performance of rice seeds treated with zinc, boron, and molybdenum

2013 ◽  
Vol 35 (4) ◽  
pp. 532-539 ◽  
Author(s):  
Lizandro Ciciliano Tavares ◽  
Daniel Ândrei Robe Fonseca ◽  
André Pich Brunes ◽  
Cassyo de Araujo Rufino ◽  
Géri Eduardo Meneguello ◽  
...  
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Initial Growth ◽  
Rice Seedlings ◽  
Aerial Parts ◽  
Seedling Length ◽  
Randomized Experimental Design ◽  
Physiological Quality ◽  
Rice Seeds

The objective of this study was to assess physiological quality of seeds and the initial growth of lowland rice seedlings, cv. PUITA INTA-CL, treated with a product based on Zinc, Boron and Molybdenum. The following dosages of product were used: 0 (control), 50, 100, 150 and 200 mL.100 kg-1 seed. A completely randomized experimental design was used, with 10 treatments and four replications. Physiological quality of seeds was assessed by following tests: germination; first count of germination; and length and dry phytomass of seedlings. The initial growth was assessed at 7, 14, 21, 35, and 42 days after emergence (DAE) through plant height, leaf area and dry phytomass of aerial parts and roots. It was concluded that the treatment of rice seeds with the product containing Zinc, Boron and Molybdenum up to the dosage tested of 200 mL.100 kg-1 seed does not influence germination, first count of germination, and the dry phytomass of aerial parts and roots; however, negatively influences seedling length. In addition, it also promotes greater plant height, higher leaf area, higher production of dry phytomass of seedlings, and increase on the growth rate, until 42 DAE.

Sign in / Sign up

Export Citation Format

Share Document