Direct effects of soybean seed vigor on weed competition

Dias, Marcos Altomani Neves; Pinto, Taís Leite Ferreira; Mondo, Vitor Henrique Vaz; Cícero, Silvio Moure; Pedrini, Leticia Gomes

doi:10.1590/s0101-31222011000200017

Cited by 10 publications

(5 citation statements)

References 13 publications

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“…The competition resultant from uneven seedling emergence and plant development could lead to dominated plants by earlier emerging neighboring plants (Merotto-Júnior et al, 1999). Differences in initial crop growth related to seed vigor are described in the literature for rice (Hofs et al, 2004;Melo et al, 2006;Mielerzski et al, 2008), black oats (Schuch et al, 2000), maize (Dias et al, 2010, Mondo et al, 2012, Mondo et al, 2013a, Mondo et al, 2013b and soybean (Egli, 1993;Vanzolini and Carvalho, 2002;Kolchinski et al, 2005;Kolchinski et al, 2006;Schuch et al, 2009;Dias et al, 2011). In addition, seed vigor has impacts on crop cultivation cycle, with plants from lower vigor seeds presenting a delayed development compared to higher vigor seeds; however, such differences tend to disappear during the reproductive phase (Egli, 1993;Mondo et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Common bean seed vigor affecting crop grain yield

Mondo

Nascente

Neto³

2016

J. Seed Sci.

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-Among the factors that affect seedling emergence and crop establishment are seed germination and vigor, which has an important influence on the establishment of the initial plant population and development, and may affect crop yield. Based on this background the objective of this research work was to evaluate the effects of seed vigor of common bean seed lots and its effects on crop grain yield. The treatments consisted of six seed lots of common bean, which were composed by different combinations of high and low vigor seeds. Seed lots were assessed by germination and vigor tests (first count of germination, electrical conductivity and accelerated aging). A field experiment was conducted in a randomized block design, with plots of six lines of five meters and were evaluated for grain yield at harvest. It was concluded that seed vigor affects common bean grain yield; the use of low vigor seeds results in grain yield reductions of up to 20%.Index term: Phaseolus vulgaris L., dry bean, seed quality, seed analysis, crop performance.Vigor de sementes de feijão-comum afetando a produtividade de grãos da cultura rESUMO -Entre os fatores que afetam a emergência das plântulas e o estabelecimento da cultura estão a germinação e o vigor das sementes, que têm influência importante sobre o estabelecimento da população de plantas e o seu desenvolvimento inicial, podendo afetar a produtividade da cultura. Neste contexto, o objetivo deste trabalho foi avaliar os efeitos do vigor de sementes de lotes de sementes de feijão-comum sobre a produtividade da cultura. Os tratamentos consistiram de seis lotes de sementes de feijão-comum, que foram compostos por diferentes combinações de sementes de alto e baixo vigor. Os lotes de sementes foram avaliados por meio de testes de germinação e de vigor (primeira contagem de germinação, condutividade elétrica e envelhecimento acelerado). Um experimento de campo foi conduzido em delineamento em blocos casualizados, com parcelas de seis linhas de cinco metros e, foram avaliados pela produtividade de grãos na colheita. Pelos dados obtidos concluiu-se que o vigor das sementes afeta a produtividade da cultura do feijão-comum; o uso de sementes com baixo vigor resulta em perdas de produtividade de até 20%.Termos para indexação: Phaseolus vulgaris L., feijão seco, qualidade de sementes, análise de sementes, desempenho da cultura.

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Section: Introductionmentioning

confidence: 99%

Common bean seed vigor affecting crop grain yield

Mondo

Nascente

Neto³

2016

J. Seed Sci.

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“…Planting seed with lower seed vigor and poor seedbed conditions could result in poor emergence and smaller plant populations and thus a reduction in final grain yield (Egli & Burris, 1971;Egli & TeKrony, 1979). Higher seedling vigor indices resulted from higher seedling emergence, and more biomass production can provide a better competition with weeds (Dias et al, 2011).…”

Section: Correlation Between Seedling Vigor Measurements and Yield Inmentioning

confidence: 99%

“…Seed vigor is the property that determines rapid and uniform germination and the emergence and development of normal seedlings under a wide range of field conditions (Perry, 1987). Seed vigor is directly related to the initial growth of the crop and affects the competitive ability of a plant against weeds (Dias, Pinto, Mondo, Cicero, & Pedrini, 2011). The vigor of seeds is likely affected by both seed quality and genetics, and a lack of seed vigor has been shown to negatively affect chickpea productivity (Akhtar, Pervez, & Nasim, 2011).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of early seedling development of Chickpea and its relation to seed yield

Walia

Mohammed

Franck

et al. 2020

Agrosystems Geosci & Env

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The rapid establishment of crop seedlings for competitive resource use is critical for both organic and conventional production systems. Seedling vigor is directly related to a plant's seedling establishment and ability to compete against weeds. Knowledge is lacking on the variation of chickpea (Cicer arietinum L.) seedling vigor traits among the cultivars at early growth stages and how these vigor traits measured in the greenhouse and field correlate to final grain yield. Field and greenhouse studies were conducted to evaluate 23 chickpea cultivars. Nodule numbers per plant, nodule fresh weight, aboveground biomass and shoot height, and vigor index (VI)-I significantly differed among the commercial chickpea varieties and breeding lines in the greenhouse study. Aboveground and belowground biomass, N uptake, and VI-II also showed significant differences among the cultivars in the field study in 2017. The greenhouse-measured parameters did not correlate well with field measurements, except for VI-I and field-measured biomass. Although chickpea seed yield in 2017 was positively correlated with field-measured seedling VI-I and VI-II, greenhousemeasured VI-I and VI-II did not correlate with the 2017 seed yield in the field.Although vigorous seedlings enhanced seedling establishment, chickpea seed yield in the field is limited by the availability of plant growth resources such as available water. Smaller-seeded chickpea cultivars yielded higher under a drier year, and largerseeded cultivars performed better in a wetter year. Abbreviation: VI, vigor index.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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“…The initial stages of the seedling development coincide with the period of crop establishment, moment of great apprehension of farmers, aware of the relationship between the formation of the stand and high yield (HENNING et al, 2010). Well-consolidated stand increases soil cover, reduces evaporation of available water, reflecting positively on productivity, improving the competitive power of crops against weeds (DIAS et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Seed reserve mobilization and seedling morphology in a bioassay for the detection of genetically modified soybean

Costa

Peña

Pereira

2022

Preprint

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Germination and initial seedling development are physiological processes that determine the establishment of crops. During heterotrophic growth, each seedling develops from the biomass of its seeds. Thus, verifying the potential of genotypes to mobilize reserves under stress has been important. The aim of this study was to investigate how glyphosate affects the mobilization of reserves and seedling morphology. Two tolerant and two herbicide-sensitive cultivars were submitted to germination, seedling length and reserve mobilization tests, including treatments with glyphosate solutions (0, 0.06 and 0.12 %). The hypocotyl / radicle ratio and the efficiency of conversion of reserves to seedlings were also verified. The data were submitted to analysis of variance and test of means. It was observed that the percentage of normal seedlings and length seedlings were affected due to the concentration of the herbicide in the treatments, being the consequences more pronounced for sensitive cultivars; the glyphosate-tolerant genotype and with the best physiological quality mobilized more reserves and was more efficient in converting biomass to seedlings; in morphology, the average length of the seedlings was reduced due to the herbicide, being the roots affected in such a way that they became smaller than the hypocotyls. The herbicide affects the morphology of the seedlings mainly the radicle, and the mobilization of the reserves discriminates the genotypes regarding tolerance to glyphosate.

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Direct effects of soybean seed vigor on weed competition

Cited by 10 publications

References 13 publications

Common bean seed vigor affecting crop grain yield

Common bean seed vigor affecting crop grain yield

Evaluation of early seedling development of Chickpea and its relation to seed yield

Seed reserve mobilization and seedling morphology in a bioassay for the detection of genetically modified soybean

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