Influence of P-Ca on cytokinins in xylem sap and on stomatal resistance in apple

Authors

  • Homero Ramírez Universidad Autónoma Agraria Antonio Narro image/svg+xml http://orcid.org/0000-0003-0876-557X (unauthenticated)
    • Aarón Isain Malendres-Álvarez Riego y Drenaje. Universidad Autónoma Agraria Antonio Narro ,
      • Alejandro Zermeño-González Riego y Drenaje. Universidad Autónoma Agraria Antonio Narro ,
        • Diana Jasso-Cantú Fitomejoramiento. Universidad Autónoma Agraria Antonio Narro: Saltillo, Coahuila, MX ,
          • José ´Ángel Villarreal-Quintanilla Botánica. Universidad Autónoma Agraria Antonio Narro ,

            DOI:

            https://doi.org/10.19136/era.a8n1.2580

            Keywords:

            Apple, xylem sap, prohexadione-ca, cytokinins, stomatal resistance.

            Abstract

            With the purpose to search upon the cytokinins origin, a study was conducted on the effects of prohexadione-ca (P-Ca) on cytokinins in xylem sap and on stomatal resistance in apple. Golden Delicious seedlings were sprayed with 100 ppm P-Ca. Stomatal leaf resistance was measured at intervals between 1 and 4 hours of spraying and 15 days after the treatment. Golden Delicious trees were sprayed with 200 ppm P-Ca two weeks after full bloom. At intervals between 1 and two weeks after P-Ca treatment, the main de-shooted stem was removed from root system and xylem sap was collected for cytokinins analysis using the suction technique. Prohexadioneca significantly increased stomatal resistance (range 2.74-4.35 s/cm−1) when compared to control (range 2.12-3.44 s/cm−1); however, P-Ca did not modify the level of cytokinins in xylem sap since range values were between 0.10 to 0.20 μg kinetin equivalents/20 ml xylem sap for both, cytokinin and control.

             

             

            Downloads

            Download data is not yet available.

            Author Biography

            • Homero Ramírez , Universidad Autónoma Agraria Antonio Narro

              Delegado por México ante la International Society for Horticulture Science (ISHS).

            References

            Biddington JA, Thomas TH (1973) A modified Amaranthus betacyanin bioassay for the rapid determination of cytokinins in plant extracts. Planta 111: 183-186.

            Costa G, Botton A (2018) Dealing with plant bioregulators in Italy: from the introduction to now. Acta Horticulturae: 1206, 1-12.

            Martin GC, Williams MW, Batjer LP (1964) Movement and fate of labelled N-dimethyl-amino-succinic acid (B-nine), a size controlling compound in apple seedlings. Proceedings American Society for Horticulture Sciences 84: 7-13.

            McElrone AJ, Earles JM, Knipfer TM, Albuquerque CP, Brodersen CR, Cuneo IF (2018) Changes in xylem conducting capacity and water storage across species: how can variable air content of xylem cells affect sap flow?. Acta Horticulturae 1222: 5-12.

            Nečas T, Wolf J, Kiss T, Láčík J, Letocha T (2018) Use of different plant growth regulators for control of shoot branching in apple and pear trees. Acta Horticulturae 1206: 225-232.

            Orton PJ, Mansfiel TA (1976) Studies of the mechanism by which daminozide (B9) inhibits stomatal opening. Journal Experimental Botany 27 (96): 125-133.

            Downloads

            Published

            2021-03-29

            Issue

            Section

            SCIENTIFIC NOTE

            How to Cite

            Ramírez , H., Malendres-Álvarez, A. I., Zermeño-González, A. ., Jasso-Cantú, D., & Villarreal-Quintanilla, J. ´Ángel . (2021). Influence of P-Ca on cytokinins in xylem sap and on stomatal resistance in apple. Ecosistemas Y Recursos Agropecuarios, 8(1). https://doi.org/10.19136/era.a8n1.2580

            Most read articles by the same author(s)