Physiological regulation of potato tuber dormancy

Suttle, Jeffrey C.

doi:10.1007/bf02871767

Cited by 163 publications

(151 citation statements)

References 57 publications

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“…Sebagai contoh, pada umbi kentang terjadi beberapa gejala penurunan mutu selama proses penyimpanan, seperti kerusakan fisik/stabilitas membran sel, yang dicirikan dengan kebocoran ion (HAQ et al, 2007), peningkatan respirasi, penyusutan bobot, penurunan kadar air, perubahan warna (greening), dan terjadi pertunasan (PRINGLE et al, 2009), serta perubahan hormon endogen (SUTTLE, 2004). Respirasi akan meningkat dengan semakin tingginya suhu ruang simpan.…”

Section: Pendahuluanunclassified

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Pengaruh Umur Panen Rimpang Terhadap Perubahan Fisiologi Dan Viabilitas Benih Jahe Putih Besar Selama Penyimpanan

Rusmin¹,

Suhartanto

Ilyas

et al. 2016

jurnal littri

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. Pengamatan dilakukan terhadap perubahan fisiologis (penyusutan bobot, persentase rimpang bertunas, tunas, kadar air, dan laju respirasi), serta viabilitas rimpang benih (daya tumbuh, tinggi, dan bobot kering bibit). Hasil penelitian menunjukkan rimpang benih umur 7 dan 8 BST mempunyai daya simpan terbaik karena menghasilkan masing-masing total angka penyusutan bobot lebih rendah (24,65 dan 25,25%) dan tunas lebih pendek (0,30 dan 1,08 cm) dibandingkan dengan umur panen 9 BST (27,13% dan 1,62 cm), selama 4 bulan disimpan. Masa dormansi rimpang benih JPB mulai pecah setelah mengalami periode simpan 2 bulan. Pertumbuhannya mulai seragam setelah 3 bulan simpan. Umur panen jahe 7 dan 8 BST mempunyai derajat dormansi yang lebih tinggi dibanding 9 BST. Rimpang benih umur panen 7, 8, dan 9 BST mempunyai daya tumbuh tinggi (>95%) dan pertumbuhan bibit seragam setelah 3 bulan disimpan.Kata kunci: Zingiber officinale Rosc., penyimpanan, benih, perubahan fisiologis, viabilitas ABSTRACT One of the factors that determine the storability of seed rhizome of white big ginger (WBG) is quality. The quality is determined by the maturity levels of seed rhizome. The aim of the experiment was to observe the effect of harvesting time on physiological changes and seed viability of WBG seed rhizomes during the storage. The experiment was conducted at Green House and Seed Technology Laboratory of Indonesian Spice and Medicinal Crops Research Institute, Bogor and Postharvest Laboratory, IPB, from July 2012 to February 2013. The experiment was arranged in a completely randomized design with five replications. The treatments tested were three levels of WBG seed rhizome harvesting time: 7, 8, and 9 month after planting (MAP). Variables observed were physiological changes of seed rhizomes during the storage (weight loss, sprouting percentage, shoot height, respiration rate, and moisture content) and viability (growth ability, height, and dry weight of the seedling). The results showed that seed rhizomes at 7 and 8 had the best storability, since it was produced each low rate of weight loss (24.65 and 25.25%), and shoots shorter (0.3 and 1.08 cm) than 9 MAP (27.13% and 1.62 cm), for 4 months in storage. Dormancy of WBG seed rhizomes has been broken after 2 months in storage. Harvesting at 7 and 8 showed a degree of dormancy higher than the harvesting age 9 MAP. Harvesting time at 7, 8, and 9 MAP had high growth ability (> 95%) and uniform seedling growth after 3 months in storage.

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Section: Pendahuluanunclassified

“…Peningkatan kandungan dan sensitivitas sitokinin merupakan faktor utama penyebab pecahnya dormansi pada umbi kentang. Selanjutnya, auksin dan giberelin endogen bekerja dalam pertumbuhan tunas (SUTTLE, 2004). Rimpang benih temu mangga (Curcuma amada Roxb.)…”

Section: Pendahuluanunclassified

Pengaruh Umur Panen Rimpang Terhadap Perubahan Fisiologi Dan Viabilitas Benih Jahe Putih Besar Selama Penyimpanan

Rusmin¹,

Suhartanto

Ilyas

et al. 2016

jurnal littri

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“…This may be possible as ethylene and ABA are known to interact synergistically and antagonistically in a number of developmental processes. Ethylene and ABA reduces premature sprouting by extending dormancy (Suttle 2004). …”

Section: Postharvest Effects Of Ecc Weight Loss Shriveling and Spromentioning

confidence: 99%

Encapsulated calcium carbide enhances production and postharvest performance of potato (Solarium tuberosum) tubers

Abbasi¹,

Hussain

Maqbool

et al. 2009

New Zealand Journal of Crop and Horticultural Science

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The effect of encapsulated calcium carbide (CaC 2 ; ECC at 30, 60, 90, and 120 kg ha -1 ) on pre-harvest production and postharvest performance of potato (Solanum tuberosum) hybrid variety 'Sante' was studied. The ECC was applied twice in the root zone at the time of sowing and 2 weeks after sowing. The data on the parametersnumber of days required for sprouting; sprouting percentage; plant height; number of leaves per plant; leaf area; photosynthesis rate; number of stems per plant; number, size, and weight of tubers; yield; weight loss; shriveling percentage; and sprout percentage were recorded. The results indicated that the number of days required for sprouting of tubers and plant height was reduced significantly by the application of ECC compared with the control. Furthermore, ECC at 60 kg ha -1 significantly reduced the number of days required for sprouting and plant height compared with other treatments. Sprouting percentage, number of leaves per plant, leaf area, photosynthesis rate, and number of stems per plant significantly increased by the application of ECC at 60 and 90 kg ha -1 . Weight, size of tubers, and overall yield of tubers was also increased significantly with the application of ECC at 60 kg ha -1 . In conclusion, the application of CaC 2 at 60 kg ha -1 in the root zone increased vegetative growth, total weight, number of large tubers, and increased total yield (40-50%).

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“…Este balanço entre inibidores e promotores pode ser alterado através da aplicação de produtos químicos que resultam na quebra de dormência, possibilitando uma rápida utilização da batata-semente em programas de multiplicação ou em procedimentos de testes pós-colheita para detecção de doenças (Coleman, 1987;Suttle, 2004). No entanto, a provável ocorrência de múlti-plos reguladores de crescimento no controle de dormência de tubérculos dificulta o seu entendimento (Coleman et al, 2001).…”

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Efeito do CO2 e etileno no período de dormência de minitubérculos de batata cv. Macaca

et al. 2007

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pesquisaU ma das hipóteses que explica a quebra de dormência de tubérculos de batata (Solanum tuberosum) é o balanço entre inibidores (ácido abscísico) e promotores (citocininas, auxinas, giberelinas e etileno) de crescimento (Suttle, 2004), sendo que a brotação ocorre quando há um balanço favorável dos promotores em relação aos inibidores (Leclerc et al., 1995;Suttle, 2004). Este balanço entre inibidores e promotores pode ser alterado através da aplicação de produtos químicos que resultam na quebra de dormência, possibilitando uma rápida utilização da batata-semente em programas de multiplicação ou em procedimentos de testes pós-colheita para detecção de doenças (Coleman, 1987;Suttle, 2004). No entanto, a provável ocorrência de múlti-plos reguladores de crescimento no controle de dormência de tubérculos dificulta o seu entendimento (Coleman et al., 2001). O etileno é um hormônio vegetal e potente regulador de crescimento, com papel ainda não totalmente esclarecido na dormência de tubérculos de batata. É possível que o tratamento com etileno estimule a síntese de giberelinas e o surgimento de enzimas requeridas para o rompimento de dormência (Allam et al., 1994). O etileno exerce um duplo efeito em tubérculos de batata diminuindo marcadamente a duração da dormência, mas inibe a elongação dos brotos durante a exposição ao tratamento (Rylski et al., 1974). Dependendo da concentração e duração da exposição, o etileno exógeno pode aumentar ou diminuir a brotação dos tubérculos (Suttle, 1998).O ethephon (ácido 2-cloroetil fosfônico) quando aplicado na forma aquosa sofre hidrólise espontânea liberando etileno (Reid, 1992). Quando aplicado em determinadas fases de desenvolvimento da planta, pode alterar os processos fisiológicos e bioquímicos (Seibert, 1997). A aspersão com 2% (v/ v) de ethephon prolongou a dormência de tubérculos (Sukhova et al., 1993 ABSTRACT Effect of CO 2 and ethylene on the dormancy period of potato cv. Macaca minitubersThe effect of CO 2 and ethylene treatments were evaluated on the dormancy period of 'Macaca' minitubers produced in greenhouse during two growing seasons. Minitubers were treated soon after harvesting. The treatments were suffocation with ethylene (1000 mL L -1 ) during 72 h; CO 2 (20 %) during 72 h; calcium carburet (200 g m -3 ) during 72 h; and 1-methylcyclopropene (1-MCP) (1 mL L -1 ) during 24 h (only for second season); and immersion with 2-cloroetil fosfonic acid (840 mg L -1 ) during 5 s. Control minitubers did not receive any treatment. The experiment was a factorial (seasons x treatments) in a randomized design, with four replications of 15 minitubers. Respiration and ethylene production were evaluated every week. Sprout number and percentage of sprouted tubers were evaluated every 15 days to obtain the area under progression curve. Minitubers produced during the first season presented shorter dormancy than those produced during the second season. First season minitubers presented an increase in respiration rate during storage that was clearly related to sprouting. CO ...

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Physiological regulation of potato tuber dormancy

Cited by 163 publications

References 57 publications

Pengaruh Umur Panen Rimpang Terhadap Perubahan Fisiologi Dan Viabilitas Benih Jahe Putih Besar Selama Penyimpanan

Pengaruh Umur Panen Rimpang Terhadap Perubahan Fisiologi Dan Viabilitas Benih Jahe Putih Besar Selama Penyimpanan

Encapsulated calcium carbide enhances production and postharvest performance of potato (Solarium tuberosum) tubers

Efeito do CO2 e etileno no período de dormência de minitubérculos de batata cv. Macaca

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