NDLI: Growth-room and field studies with seed tubers treated with ethylene and 1-methylcyclopropene (1-MCP) during storage

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Growth-room and field studies with seed tubers treated with ethylene and 1-methylcyclopropene (1-MCP) during storage

Content Provider	Springer Nature Link
Author	Pruski, K. Prange, R. K. Daniels Lake, B. J. wak, J. Astatkie, T. Ronis, D. H.
Copyright Year	2006
Abstract	Based on ethylene management in potato storage, we hypothesized that the applied treatments would modify number of sprouts per seed tuber. Thus, in combination with in-row spacing (closer for seed, wider for processing) in the field treatments will give either (1) a high number of small tubers destined for seed use, or (2) a relatively smaller number of large, uniform tubers suitable for processing. A three-year study (2001–2003), conducted with two french fry processing cultivars, Russet Burbank (RB) and Shepody (SH), aimed at the development of a novel modified atmosphere seed tuber storage treatment. Seed tubers were stored at 4 C from October to May of each year in a cold room under five modified atmospheric regimes: (1) air ventilation only (Control); (2) 4 µl L$^{−1}$ ethylene applied continuously beginning in November and (3) beginning in February; (4) 1 µ1 L$^{−1}$ MCP (1-methylcyclopropene) applied as a gas for 48 h only in early December followed by continuous 4 µl L$^{−1}$ ethylene and (5) MCP alone applied as above. Each year, once a month (mid-January until end of April), a number of seed tubers was taken from each storage treatment, planted to pots and grown for 4 wk in a growth-room. In these studies, shoot emergence from the ethylene-treated seeds of both cultivars occurred significantly earlier, giving higher number of stems per tuber and stolons per stem than Control and MCP treatments. Moreover, the time to emergence after planting decreased with the increased length of storage. Field studies that were conducted from the end of May (planting) until October each year, produced similar trends (although not significant atP≤0.05) and resulted in a higher number of tubers per stem. In RB at the closer in row spacing (30 cm) used for seed production, ethylene enhanced yield of smaller tubers in the 30- to 115-g and 115- to 300-g categories. The ethylene storage treatments also increased tuber number per plant, but not the total mass of harvested potatoes. The MCP treatment, in combination with the wider in-row spacing (40 cm) used for the production of processing tubers, significantly increased the percentage of large tubers (>300 g). In SH, contrary to RB, the ethylene treatments did not alter tuber size distribution and the application of MCP reduced tuber size rather than increasing it. Results from this study suggest that both ethylene and MCP can be used in seed potato storage to influence the tuber size distribution of the crop from that seed.Basado en el manejo de etileno para el almacenamiento de papa, hemos asumido la hipótesis de que los tratamientos aplicados modificarían el número de brotes por tubérculo semilla, así en combinación con el espaciamiento en el campo (corto para semilla y largo para procesamiento) nos dará ya sea (1) un gran número de tubérculos pequeños destinados a semilla o (2) un número relativamente pequeño de tubérculos grandes y uniformes adecuados para procesamiento. Se realizó un estudio de tres años (2001 a 2003) con dos cultivares para procesamiento de papa frita, Russet Burbank (RB) y Shepody (SH), destinado al desarrollo de un novedoso tratamiento de atmósfera modificada para el almacenamiento de tubérculos semilla. Los tubérculos semilla fueron almacenados a 4 C de octubre a mayo de cada año en un ambiente frío bajo cinco regímenes atmosféricos modificados: (1) solamente ventilación de aire (Testigo); (2) 4 Llq de 1 etileno aplicado continuamente a partir de noviembre y (3) comenzando en febrero; (4) 1 Llq de 1 MCP (1-metilcloropropeno) aplicado como gas por 48 horas solamente a principios de diciembre seguido de 4 Llq de 1-etileno y (5) MCP solo aplicado en la forma anterior. Cada año, una vez al mes (mediados de enero hasta fines de abril), se tomaron unos cuantos tubérculos semilla de cada tratamiento de almacenaje, fueron sembrados en macetas y llevados a la cámara de crecimiento por 4 semanas. En estos estudios, la emergencia de brotes de las semillas tratadas con etileno se realizó en ambos cultivares mucho más antes, con un número mayor de tallos por tubérculo y estolones por tallo que en el testigo y los tratamientos con MCP. Más aún, el tiempo de emergencia después de la siembra disminuyó con un mayor tiempo de almacenamiento. Los estudios de campo que se realizaron desde fines de mayo (siembra) hasta octubre de cada año mostraron tendencias similares (aunque no significativas aP≤0.05) y dieron un mayor número de tubérculos por tallo. En RB a menor espaciamiento (30 cm) usado para la produción de semilla, el etileno elevó el rendimiento de tubérculos más pequeños en las categorías de 30–115 g y 115–300 g. Los tratamientos de almacenamiento con etileno también incrementaron el número de tubérculos por planta, pero no la masa total de papa cosechada. El tratamiento con MCP, en combinación con un mayor espaciamiento entre plantas (40 cm) usado para la producción de papa para procesamiento incrementó significativamente el porcentaje de tubérculos más grandes (>300 g). En SH, contrariamente a RB, los tratamientos con etileno no alteraron la distribución de tamaño y la aplicación de MCP redujo el tamaño del tubérculo en lugar de incrementarlo. Los resultados de este estudio sugieren que tanto el etileno como el MCP pueden usarse en almacenamiento para influenciar la distribución de tamaño del tubérculo del cultivo a diferencia de lo que se quiere para semilla.
Starting Page	149
Ending Page	160
Page Count	12
File Format	PDF
ISSN	1099209X
Journal	American Potato Journal
Volume Number	83
Issue Number	2
e-ISSN	18749380
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-01-01
Publisher Institution	Potato Association of America
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Life Sciences Plant Sciences Animal Genetics and Genomics Agriculture Plant Physiology Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Plant Science Agronomy and Crop Science

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