scholarly journals Yield and physiological quality of wheat seeds after desiccation with different herbicides

2017 ◽  
Vol 39 (3) ◽  
pp. 254-261 ◽  
Author(s):  
Fábio Henrique Krenchinski ◽  
Victor José Salomão Cesco ◽  
Danilo Morilha Rodrigues ◽  
Vinicius Gabriel Caneppele Pereira ◽  
Alfredo Junior Paiola Albrecht ◽  
...  
Keyword(s):  
Seed Quality ◽  
Block Design ◽  
Dry Mass ◽  
Wheat Crop ◽  
Glufosinate Ammonium ◽  
Randomized Block Design ◽  
Seedling Length ◽  
Physiological Quality ◽  
Wheat Seeds

Abstract: Some desiccation techniques for harvesting wheat may affect seed quality. The objective of this study was to evaluate the effect of different desiccant herbicides applied to the wheat crop and their effects on the production and seed quality. The experiment was conducted with cultivar COODETEC 150 (CD 150) in two sites in Palotina (Paraná state, Brazil) with a randomized block design consisting of 7 treatments (desiccation herbicides) and 4 replications. Desiccation was realized when 50% of the plants were in stage 80 with seeds in powdery or mass consistency. The variables analyzed were percentage of moisture content after harvest, Yield, hectoliter weight, mass of 100 seeds, vigor, germination, fresh mass of seedlings, dry mass of seedlings and root length. The herbicides carfentrazone-ethyl and clethodim were the ones that promoted greatest reduction in vigor. The herbicide paraquat caused reduction in seedling length. There was a reduction in the mass of 100 seeds for glufosinate-ammonium, clethodim, diquat and carfentrazone-ethyl. Glufosinate-ammonium, paraquat, glyphosate, clethodim and diquat caused reduction in yield. Desiccation of Cultivar CD 150 at stage 80 is not recommended, since plant Yield and physiological seed parameters were adversely affected by herbicides.

scholarly journals Lignification of the plant and seed quality of RR soybeans sprayed with herbicide glyphosate

Revista CERES ◽  
2013 ◽  
Vol 60 (2) ◽  
pp. 286-292
Author(s):  
Cristiane Fortes Gris ◽  
Edila Vilela de Resende Von Pinho ◽  
Maria Laene de Moreira Carvalho ◽  
Rafael Parreira Diniz ◽  
Thaís de Andrade
Keyword(s):  
Seed Quality ◽  
Lignin Content ◽  
Block Design ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Hand Weeding ◽  
Herbicide Glyphosate

Differences in levels of lignin in the plant between conventional and transgenic cultivars RR has been reported by several authors, however, there are few studies evaluating the influence of spraying of glyphosate on the lignin in the plant and RR soybean seeds. The aim of this study was to evaluate the physiological quality of RR transgenic soybean seeds and the lignin contents of plants sprayed with the herbicide glyphosate. The assays were conducted both in greenhouse and field in the municipality of Lavras, MG, in the agricultural year 2007/08. The experiment was arranged in a splitplot design with four replicates, considering the treatments hand weeding and herbicide glyphosate as plots, and five RR soybean cultivars (BRS 245 RR, BRS 247 RR, Valiosa RR, Silvânia RR and Baliza RR) as splitplots. In the greenhouse, the cultivars tested were BRS 245 RR and Valiosa RR in a randomized block design with four replicates. The sprayings were carried out at stages V3, V7 and early R5 (3L/ha). The 1000 seed weight, mechanical injury, germination and germination velocity index, emergence velocity index, accelerated aging, electrical conductivity and water soaking seed test, lignin content in the seed coat, in the stem and legumes were determined. The spraying of glyphosate herbicide, in greenhouse and field, did not alter the physiological quality of seeds and the lignin contents in the plant.

scholarly journals Effect of seed vigor and sowing densities on the yield and physiological potential of wheat seeds

2021 ◽  
Vol 43 ◽  
Author(s):  
Carolina Pereira Cardoso ◽  
José Henrique Bizzarri Bazzo ◽  
Jéssica de Lucena Marinho ◽  
Claudemir Zucareli
Keyword(s):  
Seed Yield ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Wheat Crop ◽  
Seedling Length ◽  
Physiological Quality ◽  
Initial Seed ◽  
Wheat Seeds

Abstract: Initial seed vigor and sowing density interact in establishment of plants in the field, and can thus affect expression of the plasticity of the wheat crop and the yield and physiological quality of the seeds produced. The aim of this study was to evaluate the effect of seed vigor levels in combination with sowing densities on the yield and physiological potential of wheat seeds. The cultivars BRS Gralha-Azul and BRS Sabiá were used in a randomized block experimental design in a 2 × 4 factorial arrangement, with four replications. The treatments consisted of seeds of high and low vigor and four sowing densities (150, 250, 350, and 450 seeds.m-2). The following evaluations were made: seed yield, germination, first germination count, seedling length, seedling dry matter, accelerated aging, emergence speed index, and seedling emergence in sand. An increase in sowing density favors the seed yield of both cultivars; however, it reduces the vigor of the seeds produced by the cultivar BRS Gralha-Azul, especially of the seeds produced by plants originating from high vigor seeds. For the cultivar BRS Sabiá, an increase in sowing density decreases the germination performance of seeds produced by plants originating from low vigor seeds.

scholarly journals Growth retardants in wheat and its effect in physiological quality of seeds

2010 ◽  
Vol 40 (6) ◽  
pp. 1431-1434 ◽  
Author(s):  
Leandro Torres de Souza ◽  
Marcelo Curitiba Espíndula ◽  
Valterley Soares Rocha ◽  
Denise Cunha Fernandes dos Santos Dias ◽  
Moacil Alves de Souza
Keyword(s):  
Block Design ◽  
Growth Retardant ◽  
Control Treatment ◽  
Growth Retardants ◽  
Lack Of Information ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Wheat Seeds ◽  
Hierarchical Scheme

Plant lodging in wheat has been controlled through growth retardants. However, there is lack of information on the effect of these products on the physiological quality of seeds. The objective of this study was to evaluate the physiological quality of wheat seeds obtained under different rates and application times of three growth retardants. The trial was carried out in Viçosa-MG, from May to September 2005, in a factorial and hierarchical scheme, in randomized block design with four replications and a control treatment. The treatments consisted of 500, 1000 and 1500g ha-1 of chlormequat; 40, 80 and 120g ha-1 of paclobutrazol and 62.5, 125 and 187.5g ha-1 of trinexapac-ethyl applied at the 6 or 8 growth stage based on the scale of Feeks and Large, and a control treatment without growth retardant application. Leaf application of growth retardants as chlormequat, paclobutrazol and trinexapac-ethyl did not affect the germination and vigor of wheat seeds.

scholarly journals Physiological quality of soybean seeds stored after industrial treatments with different chemicals

2021 ◽  
Vol 10 (2) ◽  
pp. e6310212279
Author(s):  
Renata Cristiane Pereira ◽  
Lucas Caiubi Pereira ◽  
Alessandro Lucca Braccini ◽  
Larissa Vinis Correia ◽  
Murilo Fuentes Pelloso ◽  
...  
Keyword(s):  
Block Design ◽  
Accelerated Aging ◽  
Storage Period ◽  
Original Data ◽  
Soybean Seeds ◽  
Randomized Block Design ◽  
Seedling Length ◽  
Physiological Quality ◽  
Main Components

This study aimed to relate the smallest set of variables that compose the quality of soybean seeds lot under study, as well as to evaluate the influence of four industrial seed treatments and their respective slurry volumes on the physiological potential. The experiment was carried out in a completely randomized block design with 4 replicates and 24 treatments. The chemical treatments were: control (T1), micronutrient + polymer + drying powder (T2), bioregulator + polymer + drying powder (T3) and micronutrient + bioregulator + polymer + drying powder (T4). The seeds were stored for periods of 0, 15, 30, 45, 60 and 90 days and were subsequently evaluated for their physiological potential. In each storage period, the variable germination, first count, accelerated aging, emergence speed index, final emergence in the sand substrate, aerial part length, root length and total seedling length were evaluated. The main components of the standard germination test and first count were the ones that most contributed to explaining the variability of the original data. Increasing the volume of the slurry in the industrial seed treatment reduces the physiological quality of soybean seeds during storage.

scholarly journals Physiologic Quality and Biochemical Characters of Barley Seeds Produced Under Nitrogen Doses and Growing Environments

2019 ◽  
Vol 11 (12) ◽  
pp. 65
Author(s):  
Lanes B. A. Jaques ◽  
Ivan R. Carvalho ◽  
Vinícius J. Szareski ◽  
Henrique E. Rodrigues ◽  
Ítala T. P. Dubal ◽  
...  
Keyword(s):  
Block Design ◽  
Accelerated Aging ◽  
Dry Mass ◽  
Human Consumption ◽  
Limiting Factor ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Randomized Block Design ◽  
Physiological Quality

Barley (Hordeum vulgare L.) is considered one of the most important cereals, such as maize, rice and wheat, due to its multiplicity of usage, as much for human consumption as for feed. The Nitrogen is one of the main nutrients that influences the quality and productivity of barley seeds because it participates in numerous metabolic routes. It is a limiting factor of the production, the lack or the excess can bring consequence to the culture. In this manner, the present study aims to evaluate the influence of different nitrogen doses on the physiologic quality and biochemical characters of brewing barley seeds produced in two growing environments. The experiment was conducted in the 2017 crop season, in a randomized block design, organized in a factorial scheme, being 2 cultivation environment × 2 brewing barley cultivars × 4 nitrogen doses, disposed in four replicates. The physiological quality of the seeds was evaluated by germination, first counting of germination, accelerated aging, field emergence, shoot and root length, dry mass of shoot and root of seedlings, electrical conductivity (3, 6 and 24 hours) and isoenzymes. The growing environment promotes differences in the barley seeds physiologic quality. The nitrogen fertilizing, at dose of 120 kg ha-1, results in superiority in the physiologic quality of seeds. The cultivar BRS Cauê in both environments presented higher vigor. The nitrogen fertilizing alters the isoenzymatic expression of barley seedlings, creating variation in the bands intensity, at different nitrogen doses.

scholarly journals Production and quality of zucchini seeds after applying sulphur as top dressing and organic compost at planting

2020 ◽  
pp. 1064-1071
Author(s):  
Estefânia Martins Bardiviesso ◽  
Natália de Brito Lima Lanna ◽  
Ariel Santivañez Aguilar ◽  
Sara Raissa Brito Bezerra ◽  
Raíra Andrade Pelvine ◽  
...  
Keyword(s):  
Seed Quality ◽  
Block Design ◽  
Dry Weight ◽  
Plant Weight ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Positive Effect ◽  
Organic Compost

The recommendation of fertilization for zucchini (Cucurbita pepo) cultivation is usually made with no differentiation from the other cucurbit crops. Thus, there is a need to examine the doses of fertilizers used for zucchini production, as well as the suitability for cultivars, seasons, and cultivation regions. The aim of this study was to evaluate the influence of sulfur doses at topdressing fertilization and the supply of organic compost at planting on the production and quality of zucchini seeds. A total of eight treatments were studied in a randomized block design with a factorial scheme 4x2, corresponding to four sulfur doses at topdressing (0, 57, 114 and 173 kg ha-1 of S), in the presence (30 t ha-1) and absence of organic compost at planting. The fruits were harvested 62 DAT, and after harvest, the fruits remained in rest for 15 days in order to reach the uniformity of the physiological maturity of the seeds. The production characteristics evaluated were average fresh weight, diameter, dry weight and length of the fruits, fruit yield per plant, weight of a thousand seeds, number and seed weight. Regarding the seed quality, the percentage of germination, germination speed index, first count of the germination test, and electric conductivity, were evaluated. The supply of organic compost at planting had a positive effect on the production and physiological quality of the seeds of zucchini produced. The sulfur applied at topdressing improved the presence of the organic compost and also the production of seeds. Hence, it is recommended to apply 30 t ha-1 of organic compost at planting in association with 57 kg ha-1 of S at topdressing for higher seed yield and quality.

scholarly journals Productivity and physiological quality of seeds with burn down herbicides at the pre harvest of bean crops

2014 ◽  
Vol 36 (4) ◽  
pp. 384-391 ◽  
Author(s):  
Marlo Adriano Bison Pinto ◽  
Claudir José Basso ◽  
Stela Maris Kulczynski ◽  
Cristiano Bellé
Keyword(s):  
Management Practices ◽  
Seed Quality ◽  
Block Design ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Production Environment ◽  
Glufosinate Ammonium ◽  
Time Of Application ◽  
Physiological Quality

The physiological quality of bean seeds is influenced by the production environment and management practices employed during cultivation. The objective of this study was to evaluate the productivity and physiological quality of bean seeds after desiccant applications at different times at pre-harvest. A randomized block design was used, with a factorial (3x3) + 1 arrangement, where the application of three desiccants was tested: glyphosate (960 g a.i. ha-1), paraquat dichloride (240 g a.i. ha-1) and glufosinate ammonium (400 g a.i. ha-1) + mineral oil, applied three times (days after flowering - DAF), and a control without herbicide in four replications. Seed quality was determined by the following tests: germination, first count, seedling emergence speed rate, accelerated aging, electrical conductivity and seedling dry biomass. Seed yield was not influenced by either herbicides or time of application. Regardless of time of application, the lowest percentage of normal seedlings after the germination, first count and accelerated aging tests was observed in seeds desiccated with the herbicide glufosinate ammonium. The herbicide glyphosate reduces seedling vigor. The times of application of the product paraquat dichloride did not affect the germination and vigor of bean seeds.

scholarly journals Quality of adzuki bean seeds desiccated with flumioxazin and subjected to storage

2020 ◽  
Vol 87 ◽  
Author(s):  
Cássio Jardim Tavares ◽  
Morgana Soares Sousa ◽  
Marco Antonio Moreira de Freitas ◽  
Juliana de Fátima Sales ◽  
Osvaldo Resende ◽  
...  
Keyword(s):  
Seed Quality ◽  
Block Design ◽  
Seed Vigor ◽  
Adzuki Bean ◽  
Herbicide Application ◽  
Randomized Block Design ◽  
Evaluation Time ◽  
Physiological Quality ◽  
And Storage

ABSTRACT Production and storage environments influence the physiological and sanitary quality of seeds. This study aimed to evaluate the effects of the herbicide flumioxazin applied as a preharvest desiccant and storage on the physiological and sanitary quality of adzuki bean seeds. A randomized block design was used in a split-plot scheme, with four replications. Plots consisted of five doses of the herbicide flumioxazin (20, 25, 30, 35, and 40 g ai·ha-1) and subplots consisted of two evaluation times (harvest and six months after harvest). Two controls, with no herbicide application, were tested for each evaluation time. The physiological seed quality was maintained with doses from 25 to 35 g·ha-1 of flumioxazin. Increasing herbicide doses reduced the electrical conductivity of seeds. The increased doses also reduced the percentage of normal seedlings in the first germination count after six months of storage and caused seedling vigor loss. The storage of adzuki bean for six months reduced its physiological quality, leading to losses in germination and seed vigor. Storage and increasing doses of the desiccant flumioxazin reduced the incidence of the pathogens Rhizopus, Cladosporium, and Fusarium in the seeds. The increased doses of this herbicide reduced Aspergillus incidence. Penicillium incidence was not affected by treatments.

scholarly journals Mobilization of reserves and vigor of soybean seeds under desiccation with glufosinate ammonium

2015 ◽  
Vol 37 (2) ◽  
pp. 154-161 ◽  
Author(s):  
Carolina Maria Luzia Delgado ◽  
Cileide Maria Medeiros de Coelho ◽  
Gesieli Priscila Buba
Keyword(s):  
Soluble Protein ◽  
Seed Quality ◽  
Soluble Sugar ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Cellular Organization ◽  
Glufosinate Ammonium ◽  
Seedling Length ◽  
Physiological Quality

Abstract: The physiological quality of seeds depends on the cellular organization and their capacity to mobilize reserves. The goal of this study was to assess the germination and vigor of soybeans seeds of Benso1RR and NA 5909 RG cultivars from desiccated plants or not, by mobilizing reserves. Cultivars from desiccated plants or not, by mobilizing reserves. The plants were desiccated with glufosinate ammonium (GLA) in reproductive stage R7.1 or not (TST). The physiological seed quality was assessed by germination tests, accelerated aging and seedling length. For the mobilization of reserves were assessed within 48 hours of soaking: phytate, protein and soluble sugar contents. In 48 hours of soaking, seeds from desiccated plants in cultivar NA 5909 RG showed lower mobilization of soluble protein and soluble sugar, reflecting low vigor seedlings compared to their controls. For cultivar Benso1RR, in 48 hours of soaking, the application of GLA did not affect the mobilization of soluble protein when compared to control and did not differ as to vigor. It is concluded that the use of the desiccant has negatively influenced the mobilization of soluble protein and soluble sugar for cultivar NA 5909 RG, reflecting a low percentage of germination and low vigor.

scholarly journals Rice seeds yield and quality according to fertilization

2017 ◽  
Vol 8 (1) ◽  
pp. 126
Author(s):  
Edivado Sousa Santana ◽  
Lisandro Da Luz Ramos ◽  
Hudson Da Costa Feitoza ◽  
Fabio Mielezrski ◽  
João Carlos Medeiros
Keyword(s):  
Seed Quality ◽  
Upland Rice ◽  
Block Design ◽  
Foliar Fertilization ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Macro And Micronutrients ◽  
Rice Seeds

To obtain high seed quality, good fertilization practices are essential due to its influence not only on seed yield and weight, but also controlling the development of seedlings anomalies. Therefore, the aim of this study was to evaluate the effects of different forms of fertilization on yield and physiological quality of upland rice seeds. It was used nitrogen fertilization in coverage as urea and foliar fertilization with macro and micronutrients. The treatments consist of various sources and forms of fertilization, in a randomized block design, as follows: covering at tillering with N at 34 kg ha-1; covering at floral primordium with N at 34 kg ha-1; foliar fertilization at tillering; foliar fertilization in floral primordium; covering with N at 34 kg ha-1 in tillering and foliar fertilization in floral primordium; only basic fertilization and treatment without fertilization. The results showed that the application of nitrogen fertilizer with urea, at tillering and floral primordium at 34 kg ha-1 of N increased the production of rice seeds. In addition, coverage with urea and foliar fertilization containing macro and micronutrients increased rice seeds yield and physiological quality.

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