دانلود مقاله انگلیسی رایگان:حافظه فشار تراریخته از کسری آب در تولید بادام زمینی - 2020
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  • Transgenerational stress memory of water deficit in peanut production Transgenerational stress memory of water deficit in peanut production
    Transgenerational stress memory of water deficit in peanut production

    سال انتشار:

    2020


    عنوان انگلیسی مقاله:

    Transgenerational stress memory of water deficit in peanut production


    ترجمه فارسی عنوان مقاله:

    حافظه فشار تراریخته از کسری آب در تولید بادام زمینی


    منبع:

    Sciencedirect - Elsevier - Field Crops Research, 248 (2020) 107712: doi:10:1016/j:fcr:2019:107712


    نویسنده:

    Kelly Racettea, Brendan Zurwellerb, Barry Tillmanc, Diane Rowlandc


    چکیده انگلیسی:

    To address a changing climate and dwindling water resources, many farmers have begun to adopt water-saving irrigation management practices in crop production. Consequently, the impacts of these water-management schemes on crop physiology and yield have been quantified within a single growing season, but relatively little work has been done in characterizing the effects of controlled water deficit on crop performance in the subsequent generation. Therefore, the major aim of this project was to explore the phenotypic impacts of watersaving irrigation management between generations and identify potential genotypic variation in these responses through the quantification of transgenerational stress memory (TSM) in the establishment, photosynthetic and agronomic performance of five genotypes of peanut. To address this objective, seeds were collected from parents that received two water regimes representing two parent stress histories with contrasting potential to induce TSM and providing two progeny types: 1) offspring of non-stressed parents and 2) offspring of stressed parents. Measurements of seedling emergence, photosynthetic functioning, and yield in three consecutive years indicated that TSM may exist in peanut. However, the ways in which TSM is expressed are complex and appear to be dependent on both the genotype and the immediate environmental conditions experienced by the offspring of stressed parents. The offspring of stressed parents had greater yield than the offspring of non-stressed parents, but only in one year of the study. On the other hand, field emergence was improved in the offspring of stressed parents in all years, indicating the stand establishment of peanut plants was determined, at least in part, by the water deficit incurred during the parent generation. These results suggest that the influence of TSM on peanut phenotypes was limited to the early stages of growth of field-grown peanut. Results of this study also highlight the need to further examine the role of management in the parental generation in determining peanut seed quality and subsequent plant performance under a variety of environmental conditions.
    Keywords: Arachis hypogaea L. | Controlled deficit irrigation | Chlorophyll fluorescence | Parental effects | Emergence


    سطح: متوسط
    تعداد صفحات فایل pdf انگلیسی: 10
    حجم فایل: 841 کیلوبایت

    قیمت: رایگان


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