Abstract
Kennebec seed potatoes were stored in various atmospheres of O2 and CO2 at 32 and 41 F (0 and 5 C). Samples were removed every 6 weeks for measurement of bud and parenchyma tissue respiration, rate of ion loss from tissue sections and reducing sugar content. Potatoes remaining at the end of the storage period were warmed, cut and planted immediately in a randomized complete block design for yield evaluation.
Intact tuber respiratory rates were higher at 32 F than 41 F. Increasing CO2 increased respiratory rates and decreasing O2 decreased respiratory rates at both temperatures.
Decreasing O2 concentration significantly decreased reducing sugar at both 32 and 41 F. Increasing CO2 significantly increased reducing sugar at 41 F but not at 32 F.
Kennebec potatoes did not tolerate added CO2 at 32 F but did survive 4% CO2 at 41 F. Reducing oxygen decreased the tolerance to CO2. The onset of carbon dioxide injury was not clearly evident from changes in bud and parenchyma tissue respiration or in loss of electrolytes from cut tissue sections. However, CO2 accelerated tuber breakdown by unidentifiedFusarium Spp.
No significant differences in yield were observed between treatments that survived the storage period.
Resumen
Semillas de papa Kennebec fueron almacenadas a varias atmosferes de oxigeno (O2) y dioxido de carbono (CO2) a 32 y 41 grados Farengei (0 y 5 centigrados). Cada seis semanas fueron tomadas muestras para medis la respiración de los tejidos en las yemas y en el paran quima, la rata de pérdida de iones de los tejidos sexcionados y la redució del contemido de azúcar. Las papas que quedaron hasta el final del periodo de almacenzje fueron calentadas, costadas y sembradas immediatamente, usando el diseño de bloques completamente al azar, para evaluar la produción.
Ratas de no alteración en la respiración de los tuberculos fueron más altas a 32 grados Farengeit que a 41 grados Farengeit. Aumento de CO2 aumenta la rata de respiración y disminución de O2 disminuye la rata de respiración a ambar temperaturas. Significante disminución de la concentración de oxígeno disminujo la reducción de azúcar a ambas temperaturas 32 y 41 F. Aumento significativo de CO2 aumentó la reducción de azrícar a 41 F pero no a 32 F.
Papa Kennebec no tolenó la adición de CO2 a 32 F pero sobre vivió a la adicion de 4% de CO2 a 41 FF. La disminución de oxígeno disminuyo la tolerancia as CO2. Los naños producidos por el ataque del dioxido de carbono no fueron claramente evidente debidos ac ambios en el tejido de la yema o el paranquima, o perdida de electolitos del tejido de les secciones cortadas. Sin embargo, el CO2 acelera el deteríodo del tubérculo debido a un no identificadoFusarium Spp.
No observaron diferencias significantes en produción entre semillas que sobrevivieron al almacenaje.
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Literature Cited
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Published with the approval of the Director, Colorado Agricultural Experiment Station as Scientific Journal Series No. 1495.
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Workman, M., Twomey, J. The influence of storage on the physiology and productivity of Kennebec seed potatoes. American Potato Journal 47, 372–378 (1970). https://doi.org/10.1007/BF02864745
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DOI: https://doi.org/10.1007/BF02864745