Seed yield determination of peanut crops under water deficit: Soil strength effects on pod set, the source–sink ratio and radiation use efficiency

Haro, Ricardo; Dardanelli, J. L.; Otegui, Marı́a Elena; Collino, D. J.

doi:10.1016/j.fcr.2008.06.006

Cited by 41 publications

(40 citation statements)

References 27 publications

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“…Consequently, drought is considered the uttermost limiting factor to peanut seed yield (Gibbons, 1980). When water deficit takes place during pegging, reductions in seed yield are mostly linked to decreased pod set, and to a less extent to decreased seed weight Haro et al, 2008;Ono et al, 1974;Pallas et al, 1979;Skelton and Shear, 1971;Wright, 1989). This response is due to the direct effects of water deficit on plant growth (Haro et al, 2010) but also to indirect effects linked to topmost soil strength on pegging (Underwood et al, 1971).…”

Section: Introductionmentioning

confidence: 96%

“…This response is due to the direct effects of water deficit on plant growth (Haro et al, 2010) but also to indirect effects linked to topmost soil strength on pegging (Underwood et al, 1971). Lack of rainfall during this stage promotes increased surface soil strength, which impairs pegging and represents an additional factor limiting pod set and final seed numbers (Haro et al, 2008). Mentioned research on the effects of drought, however, did not include the analysis of pod reproductive capacity (i.e., set) in response to impaired pegging.…”

Section: Introductionmentioning

confidence: 99%

“…Pegs that started elongation before or during drought arrest their growth due to the restriction imposed by increased soil strength (Chapman et al, 1993), and many others remain above the soil surface until a new rainfall event removes this limitation and allows their penetration into the soil (Haro et al, 2008). Threshold soil strength that triggers a linear increase in pegging failure was established at 2.23 MPa for soils of the peanut production region of Argentina (Haro et al, 2008), in close agreement with findings obtained under artificial soil compaction (Sivakumar and Sarma, 1986;So and Woodhead, 1987).…”

Section: Introductionmentioning

confidence: 99%

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Peg viability and pod set in peanut: Response to impaired pegging and water deficit

Haro

Mantese

Otegui

2011

Flora - Morphology, Distribution, Functional Ecology of Plants

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Peg viability and pod set in peanut: Response to impaired pegging and water deficit

Haro

Mantese

Otegui

2011

Flora - Morphology, Distribution, Functional Ecology of Plants

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“…O amendoim, mesmo com ampla adaptabilidade, tem a produtividade muito influenciada pelas condições físicas do solo (Leonel et al, 2007) e por fatores ambientais, especialmente temperatura, disponibilidade de água e radiação (Haro et al, 2008;Silveira et al, 2013). Durante o período de colheita, esses fatores afetam diretamente a qualidade fisiológica das sementes.…”

Section: Introductionunclassified

“…Em razão da maturidade relativamente tardia que as cultivares Runner apresentam (Balota & Phipps, 2013), muitas vezes o calor e chuvas intensas no período de colheita não permitem as operações mecanizadas e a secagem natural ou cura, o que interfere na produtividade e qualidade de sementes (Haro et al, 2008). Além disso, o amendoim apresenta desenvolvimento indeterminado (Branch et al, 2010), e mesmo quando a colheita ocorre em momento ótimo, são colhidas vagens em diferentes estádios de maturação (Carley et al, 2008;Dorner, 2008).…”

Section: Introductionunclassified

Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Barbosa

Vieira

Martins

et al. 2014

Pesq. agropec. bras.

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Physiological and health quality of peanut seeds during the production processAbstract -The objective of this work was to evaluate the effect of production process stages on the physiological and health quality of peanut seeds. A completely randomized design with 12 treatments and four replicates was used. Treatments consisted of plant uprooting, plant gathering, transportation, drying, storage (two, four, and six months), and the following processing steps: mechanical threshing, classification by size, separation by density and color, and chemical treatment. Water content, health quality, germination, and vigor of seeds were evaluated after each treatment. Aspergillus spp. and Penicillium sp. were found in the seeds. In the first year, after mechanical threshing, seeds showed a reduced performance. In the production process, storage promoted the infection of 100% of the seeds by Aspergillus spp. The chemical treatment was effective in restoring seed health quality. Mechanical threshing steps and storage reduce the seed quality of peanut.

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Drought Stress Responses in Plants, Oxidative Stress, and Antioxidant Defense

Hasanuzzaman

Nahar

Gill

et al. 2013

Climate Change and Plant Abiotic Stress Tolerance

135

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Global climate change is currently viewed as the most devastating threat to the environment, and is now gaining considerable attention from farmers, researchers, and policy makers because of its major influence on agriculture. The situation is becoming more serious due to gradual increases in the complex nature of the environment, and due to the unpredictability of environmental conditions and global climate change. One of the most acute environmental stresses presently affecting agriculture is drought, which has pronounced adverse effects on the growth and development of crop plants. The effects of drought stress are expected to increase further with increases in climate change and a growing water crisis. Drought stress usually leads to reductions in crop yield, which can result from many drought-induced morphological, physiological, and metabolic changes that occur in plants. A key sign of drought stress at the molecular level is the accelerated production of reactive oxygen species (ROS) such as singlet oxygen ( 1 O 2 ), superoxide (O 2 À ), hydrogen peroxide (H 2 O 2 ), and hydroxyl radicals (OH ). The excess production of ROS is common in many abiotic stresses, including drought stress, and results from impaired electron transport processes in the chloroplasts and mitochondria. One of the major causes of ROS production under drought stress is photorespiration, which accounts for more than 70% of the total H 2 O 2 produced. Plants have endogenous mechanisms for adapting to ROS production and are thought to respond to drought stress by strengthening these defense mechanisms. Therefore, enhancement of the functions of the naturally occurring antioxidant components (enzymatic and non-enzymatic) may be one strategy for reducing or preventing oxidative damage and improving the drought resistance of plants. In this chapter, we review the most recent reports on drought-induced responses in plants, focusing on the role of oxidative stress as well as on other possible mechanisms and examining how different components of the antioxidant defense system may confer tolerance to drought-induced oxidative stress.

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Seed yield determination of peanut crops under water deficit: Soil strength effects on pod set, the source–sink ratio and radiation use efficiency

Cited by 41 publications

References 27 publications

Peg viability and pod set in peanut: Response to impaired pegging and water deficit

Peg viability and pod set in peanut: Response to impaired pegging and water deficit

Qualidade fisiológica e sanitária de sementes de amendoim durante o processo de produção

Drought Stress Responses in Plants, Oxidative Stress, and Antioxidant Defense

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