Vigor de sementes e desempenho agronômico de plantas de algodão

Mattioni, Fabio; Albuquerque, Maria Cristina de Figueiredo e; Marcos-Filho, J.; Guimarães, Sebastião Carneiro

doi:10.1590/s0101-31222012000100014

Cited by 15 publications

(14 citation statements)

References 9 publications

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“…Similar results were obtained by Lucena et al (2013) who observed that immature seeds also presented lower emerged seedlings percentage. When studying cotton seeds vigor, Mattioni et al (2012) verified that more vigorous seeds had upper performance at in-field seedling emergence, fact that is also observed in this paper.…”

Section: Resultssupporting

confidence: 87%

Physiological quality and vigor of sesame seeds due to organic fertilizing and fruits position on stem

Silva¹,

Oliveira²,

Lopes³

et al. 2017

J. Cereals Oilseeds

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The sesame fruits present differences on maturity due to their position on the plant stem. Thus, the objective of this paper is to evaluate the physiological quality of sesame seeds from three fruits locations on the plant stem (lower, middle and upper thirds) due to fertilizing with cattle manure (0, 20, 40 and 60 t.ha -1 ). We evaluated the germination percentage, first germination count, germination speed index, average germination time, accelerated-aged seeds germination and electrical conductivity of seeds. In addition, to evaluate seedling establishment we observed emergence percentage, emergence speed index, and average emergence time, as well as length and dry mass of seedlings. The experimental arrange used was entirely randomized in a factorial scheme (3×4) with four repetitions, and means were compared through the Tukey test at 5% probability. The fruits position on the plant stem influenced the sesame seeds quality. The yellowish green fruits from middle third of stem, as well as yellowish ones from lower third of stem showed best results for most variables evaluated. Seed vigor was positively influenced by cattle manure application in the soil; however, fertilizing did not have any effect on seeds germination.

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Section: Resultssupporting

confidence: 87%

Physiological quality and vigor of sesame seeds due to organic fertilizing and fruits position on stem

Silva¹,

Oliveira²,

Lopes³

et al. 2017

J. Cereals Oilseeds

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“…These results clearly show that under stress from weed competition, soybean plants developing from high vigor seeds show a better performance than those from low vigor seeds. Similar results on the effects of seed vigor on grain yield were observed by Kolchinski et al (2005), with differences of around 30%, and by Mattioni et al (2009) with differences of around 20%, for soybean and cotton, respectively.…”

Section: Resultssupporting

confidence: 87%

Direct effects of soybean seed vigor on weed competition

Dias

Pinto

Mondo

et al. 2011

Rev. bras. sementes

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-Seed vigor is one of the factors that determines the speed and uniformity of seedling emergence and initial plant growth, which are crucial aspects in the competition against weeds. The objective of this study was to verify the direct effects of soybean seed vigor on weed competition and grain yield. A field experiment was conducted with three seed lots of the "Conquista" cultivar, previously characterized by physiological tests as having high, intermediate and low vigor. The experiment was divided into weeded and unweeded plots with six treatments. Crop plant height, weed dry mass accumulation and crop grain yield data were recorded. Seed vigor did not affect plant height and grain yield. Plants which developed from seeds with high and intermediate vigor showed the best results for competition against weeds, reducing weed dry mass accumulation. Plants which developed from high vigor seeds give the best results for grain yield for both weeded and unweeded treatments.Index terms: Glycine max L., physiological potential, grain yield, crop interference. EFEITOS DIRETOS DO VIGOR DE SEMENTES DE SOJA NA COMPETIÇÃO COM PLANTAS DANINHASRESUMO -O vigor das sementes é um fator que determina a velocidade e uniformidade de emergência de plântulas e o crescimento inicial das plantas, que consistem em aspectos cruciais na competição com plantas daninhas. Assim, os objetivos neste estudo foram verificar os efeitos diretos do vigor de sementes de soja sobre a competição com plantas daninhas e rendimento de grãos. Um experimento de campo foi conduzido na Universidade de São Paulo, Piracicaba, Brasil, com três lotes de sementes do cultivar "Conquista", previamente caracterizados por meio de testes fisiológicos como de alto, intermediário e baixo vigor. O experimento foi dividido em parcelas com e sem controle de plantas daninhas, compondo seis tratamentos. Os dados de altura das plantas de soja, acúmulo de massa de matéria seca de plantas daninhas e de produtividade de grãos foram obtidos. O vigor das sementes não afetou a altura das plantas e o rendimento de grãos de soja neste estudo. As plantas desenvolvidas a partir de sementes de alto e médio vigor apresentaram os melhores resultados na competição com plantas daninhas, proporcionando redução do acúmulo de massa de matéria seca destas. Plantas provenientes do lote de sementes de alto vigor apresentam maior rendimento de grãos, tanto em parcelas com controle, como nas sem controle de plantas daninhas.Termos para indexação: Glycine max L., potencial fisiológico; rendimento de grãos; interferência da cultura.

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“…The emergence speed index of sesame seedlings used in this study shows the same pattern observed for the germination percentage, first germination count and germination speed index, with a tendency to increase throughout the maturation process. Seeds present their greatest vigor at the period of physiological maturity, when they have a superior performance, regarding the emergence of seedlings in the field, and a greater emergence speed index (Mattioni et al 2012, Lucena et al 2013.…”

Section: Resultsmentioning

confidence: 99%

Effect of fertilization on the physiological maturation of sesame seeds1

Ferreira

Pereira

Macedo

et al. 2017

Pesqui. Agropecu. Trop.

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Fertilization and harvest time may influence the formation and maturation processes, as well as the physiological quality of seeds. This study aimed at evaluating the effect of fertilization on the physiological maturation of sesame seeds. The following variables were evaluated: fruit color, dry mass and water content of fruits and seeds, germination, first germination count, germination speed, emergence and emergence speed. No significant fertilization effect was observed on fruit maturation for water content or dry mass. However, there was significance for these variables in the seeds. The harvest time had a significant effect on water content and dry mass of fruits and seeds. For the variables that evaluated the seed viability and vigor, both the fertilization and harvest time influenced the physiological maturation. The physiological maturity of the sesame seeds, whose plants were grown with and without fertilization, was reached between 52 and 54 days after anthesis, when the fruits were classified as yellow-greenish 7.5 Y 8/6 and yellow to yellow-red 10.R 4/6.

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Vigor de sementes e desempenho agronômico de plantas de algodão

Cited by 15 publications

References 9 publications

Physiological quality and vigor of sesame seeds due to organic fertilizing and fruits position on stem

Physiological quality and vigor of sesame seeds due to organic fertilizing and fruits position on stem

Direct effects of soybean seed vigor on weed competition

Effect of fertilization on the physiological maturation of sesame seeds1

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