Sweetening responses of potato tubers of different maturity to conventional and non-conventional storage temperature regimes

Knowles, N. Richard; Driskill, Edward P.; Knowles, Lisa O.

doi:10.1016/j.postharvbio.2008.08.015

Cited by 46 publications

(33 citation statements)

References 15 publications

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“…Although three major components contribute to late blight resistance in tubers; the phellem cells (periderm), the outer cortical cell layers and the medulla storage tissues characterized by reduced hyphal growth and sporulation of P. infestans (Pathak and Clarke 1987) in this study, only the contribution of the medullar storage tissues was assessed. Temperature has a profound influence on the physiology of potato tubers (Kaur et al 2009;Knowles et al 2009;Kumar 2009) and also on the pathology of tubers as pertaining to late blight (Kirk et al 2001d;Lambert and Currier 1997). The inclusion of the three temperature conditions was intended to simulate late blight development in tubers stored for seed, table-stock and processing, 3°C, 7°C and 10°C, respectively.…”

Section: Discussionmentioning

confidence: 99%

Effect of Different Genotypes of Phytophthora infestans (Mont. de Bary) and Temperature on Tuber Disease Development

et al. 2010

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The interactions of different cultivars/Advance Breeding Lines (ABL) of potato with different genotypes of the potato late blight pathogen (Phytophthora infestans) at three storage temperatures on tuber late blight development were evaluated. The contribution of the medullar storage tissues was assessed rather than the periderm and outer cortical cell tissue. Tuber late blight severity measured as tuber darkening [mean Relative Average Reflectance Intensity [RARI (%)] generally increased with temperature. There was little difference in tuber late blight development between 7°C and 10°C treatments and in some combinations significantly more tissue darkening developed at 7 than at 10°C but little or no development occurred at 3°C. Resistance in tubers was observed only in Torridon andStirling and to some extent Jacqueline Lee, but the cultivar Missaukee had weak tuber resistance. The US-8 genotype isolates were the most aggressive in tubers in most years causing rapid and significantly more tuber damage than any other genotype of P. infestans and similar to the US-6, US-10 and US-14 isolates used in 2006.Resumen Se evaluaron las interacciones de diferentes variedades y líneas avanzadas (ABL) de papa con diferentes genotipos del patógeno del tizón tardío (Phytophthora infestans) a tres temperaturas de almacenamiento para el desarrollo del tizón tardío en tubérculo. Se analizó la contribución de los tejidos medulares de almacén en vez del peridermo y de tejido celular cortical más externo. La severidad del tizón tardío del tubérculo, medida como el oscurecimiento del tubérculo [media de la intensidad del promedio relativo de refractancia [RARI (%)], generalmente se incrementó con la temperatura. Hubo poca diferencia en el desarrollo del tizón tardío del tubérculo entre los tratamientos de 7 y 10°C, y en algunas combinaciones se desarrolló mayor oscurecimiento de tejido significativamente a 7 que a 10°C pero no se presentó a 3°C. La resistencia de los tubérculos se observó solo en Torridon y Stirling y hasta cierto punto en Jacqueline Lee, pero la variedad Missaukee tuvo débil resistencia de tubérculo. Los aislamientos del genotipo US-8 fueron los más agresivos en tubérculos en la mayoría de los años causando más daño en tubérculo rápida y significativamente que cualquier otro genotipo de P. infestans y similar a los aislamientos US-6, US-10, y US-14 usados en el 2006.

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Section: Discussionmentioning

confidence: 99%

Effect of Different Genotypes of Phytophthora infestans (Mont. de Bary) and Temperature on Tuber Disease Development

et al. 2010

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“…Oleh karena itu, teknologi untuk menghambat kerusakan tersebut perlu diupayakan untuk menjamin mutu kentang segar tetap prima sampai di tangan konsumen meski disimpan dalam kurun waktu yang cukup lama. Beberapa teknologi untuk menghambat kerusakan umbi kentang tersebut antara lain dengan membatasi lingkungan penyimpanan kentang menyangkut pengaturan suhu, kelembaban, intensitas penyinaran, dan iradiasi 7,8,9 . Penanganan segar kentang di Indonesia belum banyak menerapkan tknologi yang memadai dalam rangkaian tataniaganya, sehingga tingkat kerusakan masih lebih dari 20%.…”

Section: Pendahuluanunclassified

“…Hasil sidik ragam menyatakan bahwa kadar air umbi kentang tidak berbeda nyata pada taraf 5% selama penyimpanan dengan kondisi pencahayaan 100-500 lux/ lilin dan tanpa cahaya (gelap) pada suhu kamar (ambient) 8,9 Kadar air dalam umbi kentang merupakan indikasi dari tingkat kesegaran sehingga berpengaruh terhadap mutu, terutama fisik. Kadar air umbi kentang berkisar antara 83,38-86,28%.…”

Section: Kadar Airunclassified

Teknologi Penyimpanan Umbi Kentang (Solanum tuberosum L.) Var. GM-05 dengan Rekayasa Pencahayaan untuk mempertahankan Kesegarannya

Broto¹,

Setyabudi²,

Sunarmani³

et al. 2018

J. Penelit Pascapanen Pertan

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Kondisi penyimpanan menjadi kata kunci untuk meningkatkan daya simpan umbi kentang GM-05 dengan mutu segar yang terjaga. Kentang segar GM-05 dalam penelitian ini diperoleh dari Kebun Percobaan Balai Penelitian Sayuran, Lembang dan dipanen pada umur 90 Hari Setelah Tanam (HST). Umbi kentang dengan bobot masing-masing 30 kg dikemas dalam karung rajut, disimpan pada kondisi (1) ruangan gelap, (2) ruangan dengan pencahayaan 100-500 lux/lilin, dan (3) dihamparkan sebagai kontrol. Penyimpanan dilakukan pada suhu ambient, 20, dan 10oC. Pengamatan dilakukan setiap 2 (dua) minggu sekali selama 3 bulan penyimpanan. Parameter yang diamati meliputi: susut bobot, kadar air, kadar protein, kadar karbohidrat, kadar lemak, kadar amilosa, kadar abu, dan tekstur. Rancangan percobaan menggunakan rancangan acak lengkap tersarang dengan ulangan tiga kali dan signifikansi beda nyata terkecil pada taraf 5%. Hasil penelitian menunjukkan bahwa penyimpanan dalam ruang gelap maupun yang dengan pencahayaan 100-500 lux/lilin suhu 10 oC memberikan susut bobot dan laju penurunan kadar air terendah dibandingkan perlakuan lainnya. Kadar karbohidrat, kadar abu, dan tekstur tidak terpengaruh dengan semua perlakuan penyimpanan. Penurunan kadar lemak dan amilosa umbi kentang melambat hingga masing-masing sebesar 0,14% dan 4,42% terjadi pada penyimpanan dalam ruang gelap maupun yang dengan pencahayaan pada suhu 10 oC. Kadar protein meningkat hingga pada kisaran 1,51%. Penyimpanan suhu 10oC dengan kondisi gelap ataupun pencahayaan 100-500 lux/lilin merupakan metode penyimpanan kentang GM-05 terbaik karena mampu mempertahankan mutu dan kesegarannya.

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“…For example, tubers harvested when immature have a less well-developed periderm and higher rates of respiration than those harvested when more mature (Burton 1978;Lulai and Orr 1993). Tubers harvested when immature or over mature are more likely to exhibit high reducing sugars in storage than those harvested at optimal maturity (Driskill et al 2007;Knowles et al 2009;Pritchard and Adam 1992).…”

Section: Introductionmentioning

confidence: 99%

“…Previous research has focused primarily on the influence of harvest date and vine kill on yield (Ivany and Sanderson 2001;Waterer 2007), fry color (Driskill et al 2007;Miller et al 1975;Nelson and Sowokinos 1983;Waterer 2007) and tuber sugar profiles (Pritchard and Adam 1992;Sabba et al 2007). Both early and late harvest can lead to elevated reducing sugars or high fry color at the time of harvest (Miller et al 1975;Nelson and Shaw 1976) or in storage (Driskill et al 2007;Knowles et al 2009;Pritchard and Adam 1992), but how vine-kill treatment influences this is largely unknown. There is little published research describing how vine-kill treatments and timing of vine desiccation affect post-harvest tuber physiology.…”

Section: Introductionmentioning

confidence: 99%

Vine-Kill Treatment and Harvest Date have Persistent Effects on Tuber Physiology

Bethke

Busse

2010

Am. J. Pot Res

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The quality of potato (Solanum tuberosum) tubers coming out of storage depends on the state of the tubers going into storage. Experiments determined the effects of vine-kill treatment and harvest date on the post-harvest physiology of potato tubers stored for up to 12 weeks. Potato cultivar Russet Burbank grown in central Wisconsin was harvested in late July when tubers were immature, in late August, and in early September after complete natural senescence of vines. Prior to the first two harvests, vines were either desiccated with diquat dibromide or were untreated. Data were collected at harvest and in storage for skin set, tuber respiration rate, and tuber sucrose, glucose, and fructose contents. Skin set at harvest was increased by use of the desiccant at the early harvest date, but not at the middle harvest date. Early harvest without vine kill resulted in elevated tuber bud-end glucose contents in storage. Early harvest with vine kill treatment resulted in increased rates of respiration in storage that persisted through December. Neither tuber sucrose nor glucose content 6 weeks after harvest was a good predictor of tuber glucose content 12 weeks after harvest. These data demonstrate that vine-kill treatment and tuber maturity at harvest have long-term effects on tuber quality.Resumen La calidad de los tubérculos de papa (Solanum tuberosum) saliendo del almacén, depende de la condición de los tubérculos cuando entran. Los experimentos determinaron los efectos del tratamiento para eliminación del follaje y fecha de cosecha en la fisiología de post-cosecha de tubérculos de papa almacenados hasta por 12 semanas. El cultivar Russet Burbank cultivado en la parte central de Wisconsin se cosechó a finales de julio, cuando los tubérculos eran inmaduros, a finales de agosto, y al principio de septiembre, después de completar la senescencia natural del follaje. Antes de las primeras dos cosechas, el follaje se desecó con dibromuro de diquat o sin desecante. Se tomaron datos a la cosecha y en el almacén para madurez de la piel, nivel respiratorio del tubérculo, y para el contenido de sacarosa, glucosa y fructosa. La madurez de la piel se incrementó con el uso del desecante en la fecha temprana de cosecha, mas no en la intermedia. La cosecha temprana sin la eliminación del follaje dio por resultado un contenido elevado de glucosa en el extremo apical del tubérculo en almacén. La cosecha temprana con el tratamiento de eliminación del follaje resultó en niveles elevados de respiración en el almacén que persistieron hasta diciembre. Ni el contenido de la sacarosa ni el de glucosa del tubérculo, seis semanas después de la cosecha, fueron buenos indicadores del contenido de glucosa doce semanas después de la cosecha. Estos datos demuestran que el tratamiento de eliminación del follaje y la madurez del tubérculo a la cosecha, tienen efecto a largo plazo en la calidad del tubérculo.

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Sweetening responses of potato tubers of different maturity to conventional and non-conventional storage temperature regimes

Cited by 46 publications

References 15 publications

Effect of Different Genotypes of Phytophthora infestans (Mont. de Bary) and Temperature on Tuber Disease Development

Effect of Different Genotypes of Phytophthora infestans (Mont. de Bary) and Temperature on Tuber Disease Development

Teknologi Penyimpanan Umbi Kentang (Solanum tuberosum L.) Var. GM-05 dengan Rekayasa Pencahayaan untuk mempertahankan Kesegarannya

Vine-Kill Treatment and Harvest Date have Persistent Effects on Tuber Physiology

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