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

Haro, Ricardo; Mantese, Anita I.; Otegui, Marı́a Elena

doi:10.1016/j.flora.2011.05.003

Cited by 10 publications

(5 citation statements)

References 34 publications

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“…The FI calculated in current work underlined the high levels of flower abortion and low efficiency of pod set in peanut crops (FI ≤ 0.29), as documented in previous studies that used shading during the pegging and podding phases (Hang et al, 1984), high temperatures during flowering (Vara Prasad et al, 1998, 1999a, 1999b, 2000, water stress (Harris et al, 1988;Nageswara Rao et al, 1985;Pallas et al, 1979) and impaired pegging (Collino et al, 2001;Haro et al, 2008Haro et al, , 2010Haro et al, , 2011. Coffelt et al (1989) estimated the FI in 14 cultivars with contrasting growth habits using different computations methods, and one of them (described as REM2) matched our computation system (i.e., quotient between final pod number and total number of flowers).…”

Section: Discussionsupporting

confidence: 78%

Genetic improvement of peanut in Argentina between 1948 and 2004: Links between phenology and grain yield determinants

Haro

Baldessari

Otegui

2015

Field Crops Research

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Section: Discussionsupporting

confidence: 78%

Genetic improvement of peanut in Argentina between 1948 and 2004: Links between phenology and grain yield determinants

Haro

Baldessari

Otegui

2015

Field Crops Research

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“…The drought mediated losses in the peanut production is due to several reasons. Peanut plants bear aerial flowers and, after pollination, the fertilized ovaries develop into gynophores or pegs (Haro, Mantese, & Otegui, ). The peg is a positively geotropic stalk‐like structure containing embryos in which basal cells of the fertilized ovary elongate (Jacobs, ).…”

Section: Peanut Responses To Abiotic Stressesmentioning

confidence: 99%

“…Drought mediated increase in top soil hardness can restrict or delay peg penetration into the soil and therefore restrict the pegging stage resulting in limited pod set and subsequent seed numbers (Haro, Dardanelli, Otegui, & Collino, , ). However, in contrast, if the drought affected pegs are re‐watered, viable pegs starts penetrating the soil again (Haro et al., ).…”

Section: Peanut Responses To Abiotic Stressesmentioning

confidence: 99%

Peanut (Arachis hypogaea L.): A Prospective Legume Crop to Offer Multiple Health Benefits Under Changing Climate

Akram

Shafiq

Ashraf

2018

Comp Rev Food Sci Food Safe

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Peanut is a multipurpose oil-seed legume, which offer benefits in many ways. Apart from the peanut plant's beneficial effects on soil quality, peanut seeds are nutritious and medicinally and economically important. In this review, insights into peanut origin and its domestication are provided. Peanut is rich in bioactive components, including phenolics, flavonoids, polyphenols, and resveratrol. In addition, the involvement of peanut in biological nitrogen fixation is highly significant. Recent reports regarding peanut responses and N 2 fixation ability in response to abiotic stresses, including drought, salinity, heat stress, and iron deficiency on calcareous soils, have been incorporated. As a biotechnological note, recent advances in the development of transgenic peanut plants are also highlighted. In this context, regulation of transcriptional factors and gene transfer for the development of stress-tolerant peanut genotypes are of prime importance. Above all, this review signifies the importance of peanut cultivation and human consumption in view of the scenario of changing world climate in order to maintain food security.

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“…The cultivated peanut is an allotetraploid (amphidiploid with 2n = 4x = 40) and is relatively drought-tolerant to a certain extent. However, water deficit stress in pod formation stage would seriously affect the yield and productivity of peanuts (Haro et al, 2011;Koolachart et al, 2013). Therefore, improving drought tolerance of peanuts is very important and more research is needed to explore and understand drought stress.…”

Section: Discussionmentioning

confidence: 99%

Transcriptome and Co-expression Network Analyses Reveal Differential Gene Expression and Pathways in Response to Severe Drought Stress in Peanut (Arachis hypogaea L.)

Zhao

Cui

et al. 2021

Front. Genet.

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Drought is one of the major abiotic stress factors limiting peanut production. It causes the loss of pod yield during the pod formation stage. Here, one previously identified drought-tolerant cultivar, “L422” of peanut, was stressed by drought (35 ± 5%) at pod formation stage for 5, 7, and 9 days. To analyze the drought effects on peanut, we conducted physiological and transcriptome analysis in leaves under well-watered (CK1, CK2, and CK3) and drought-stress conditions (T1, T2, and T3). By transcriptome analysis, 3,586, 6,730, and 8,054 differentially expressed genes (DEGs) were identified in “L422” at 5 days (CK1 vs T1), 7 days (CK2 vs T2), and 9 days (CK3 vs T3) of drought stress, respectively, and 2,846 genes were common DEGs among the three-time points. Furthermore, the result of weighted gene co-expression network analysis (WGCNA) revealed one significant module that was closely correlated between drought stress and physiological data. A total of 1,313 significantly up-/down-regulated genes, including 61 transcription factors, were identified in the module at three-time points throughout the drought stress stage. Additionally, six vital metabolic pathways, namely, “MAPK signaling pathway-plant,” “flavonoid biosynthesis,” “starch and sucrose metabolism,” “phenylpropanoid biosynthesis,” “glutathione metabolism,” and “plant hormone signal transduction” were enriched in “L422” under severe drought stress. Nine genes responding to drought tolerance were selected for quantitative real-time PCR (qRT-PCR) verification and the results agreed with transcriptional profile data, which reveals the reliability and accuracy of transcriptome data. Taken together, these findings could lead to a better understanding of drought tolerance and facilitate the breeding of drought-resistant peanut cultivars.

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

Cited by 10 publications

References 34 publications

Genetic improvement of peanut in Argentina between 1948 and 2004: Links between phenology and grain yield determinants

Genetic improvement of peanut in Argentina between 1948 and 2004: Links between phenology and grain yield determinants

Peanut (Arachis hypogaea L.): A Prospective Legume Crop to Offer Multiple Health Benefits Under Changing Climate

Transcriptome and Co-expression Network Analyses Reveal Differential Gene Expression and Pathways in Response to Severe Drought Stress in Peanut (Arachis hypogaea L.)

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