Effect of Paclobutrazol Treatments on Growth and Tuber Yields in Greenhouse-Grown Shepody Seed Potatoes

Hughes, Becky R.; Keith, C.

doi:10.17660/actahortic.2003.619.30

Cited by 2 publications

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“…On the contrary, Bandara and Tanino (1995) reported that PBZ nearly doubled the number of tubers per plant without affecting the total fresh weight of the tubers. The work of Hughes and Keith (2003) on the effect of PBZ treatments on growth and tuber yield in greenhouse-grown shepody seed potatoes indicated that PBZ treatment decreased mini tuber number as well as yield. In addition, PBZ treatment at rates between 100 and 4000 mg l À1 induced the formation of more sessile aerial tubers when applied 14 days after planting.…”

Section: Discussionmentioning

confidence: 99%

Growth and biomass production in potato grown in the hot tropics as influenced by paclobutrazol

Tekalign¹,

Hammes²

2005

Plant Growth Regul

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Two similar field trials were carried out during 2003 in a hot tropical region of eastern Ethiopia to investigate the effect of leaf and soil applied paclobutrazol on the growth, dry matter production and assimilate partitioning in potato. A month after planting paclobutrazol was applied as a foliar spray or soil drench at rates of 0, 2, 3, and 4 kg a.i. paclobutrazol ha À1 . Plants were sampled during treatment application and subsequently 2, 4, 6 and 8 weeks after treatment application. The data was analyzed using standard growth analyses techniques. None of the growth parameters studied was affected by the method of paclobutrazol application. Paclobutrazol decreased leaf area index, crop growth rate, and total biomass production, and increased specific leaf weight, tuber growth rate, net assimilation rate, and partitioning coefficient of potato. At all harvesting stages, paclobutrazol reduced the partitioning of assimilate to the leaves, stems, and roots and stolons and increased allocation to the tubers. Although paclobutrazol decreased the total biomass production it improved tuber yield by partitioning more assimilates to the tubers. Paclobutrazol improved the productivity of potato under tropical conditions by redirecting assimilate allocation to the tubers.

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Section: Discussionmentioning

confidence: 99%

Growth and biomass production in potato grown in the hot tropics as influenced by paclobutrazol

Tekalign¹,

Hammes²

2005

Plant Growth Regul

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“…However, Flores (2011) mention that with 150 mg L -1 paclobutrazol or 20 mg L -1 uniconazole, the plant height is reduced without affecting the number of tubers and biomass. However, there are also studies where there may be an adverse effect by applying paclobutrazol, mentioned which can reduce the biomass of the entire plant (Tekalign et al, 2005) and even the performance of minitubers (Hughes and Keith, 2003).…”

Section: Introductionmentioning

confidence: 99%

Aplicación periódica de bajas concentraciones de paclobutrazol y ácido salicílico en papa en invernadero

Flores-López

Martínez-Gutiérrez

López-Delgado

et al. 2017

Remexca

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ResumenEl objetivo de esta investigación fue determinar el uso de bajas concentraciones de ácido salicílico y paclobutrazol en Solanum tuberosum (Cristal y clon 981824) en invernadero para el incremento de rendimiento y almidón en papa. Los experimentos se realizaron en 2012 en Zinacantepec, México. Los tratamientos consistieron en aspersión con AS: 10 -8 , 10 -10 , 10 -12 y 10 -14 M, paclobutrazol: 1, 0.75, 0.5, 0.25 mg L -1 y el testigo, arreglados en bloques completos al azar, se determinó altura, clorofila, IAF, peso fresco, número de tubérculos y contenido de almidón. En el clon 981824, las plantas testigo y las de AS (10 -8 y10 -10 ) presentaron mayor altura, mientras para Cristal fueron las de AS, testigo y paclobutrazol 0.25 mg L -1 . En clorofila e IAF no hubo diferencias significativas. En el clon 981824, el testigo presento mayor peso fresco (148 g por planta), en cambio Cristal no presentó diferencias entre tratamientos. El número total de minitubérculos fue superior con paclobutrazol 0.5 mg L -1 en ambos genotipos (Cristal: 12.93 y 981824: 23.3). Todos los tratamientos de paclobutrazol y de AS 10 -8 , 10 -10 y 10 -14 presentaron mayor contenido de almidón con respecto al testigo en el clon 981824, mientras que en Cristal fueron: paclobutrazol 0.75 y 1.0 mg L -1 con 241 y 231 mg g -1 y 10 -8 y 10 -12 de AS con 165 y 173 mg g -1 . En conclusión el paclobutrazol disminuye la altura de las plantas y tanto este como el AS incrementan el contenido de almidón de tubérculo a las concentraciones indicadas. AbstractThe objective of this research was to determine the use of low concentrations of salicylic acid and paclobutrazol in Solanum tuberosum (Crystal and clone 981824) in the greenhouse for increased performance and potato starch. The experiments were performed in 2012 in Zinacantepec, Mexico. Treatments consisted of spraying with AS: 10 -8 , 10 -10 , 10 -12 y 10 -14 M, paclobutrazol: 1, 0.75, 0.5, 0.25 mg L -1 and the control, arranged in a randomized complete blocks, determined height, chlorophyll, IAF, fresh weight, number of tubers and starch content. In clone 981824, the control plants and AS (10 -8 and10 -10 ) had higher, while for Cristal were AS, witness and paclobutrazol 0.25 mg L -1 . Chlorophyll and IAF there were no significant differences. In clone 981824, the witness had higher fresh weight (148 g per plant) instead Cristal showed no differences between treatments. The total number of minitubers was higher with paclobutrazol 0.5 mg L -1 in both genotypes (Crystal: 12.93 and 981824: 23.3). All paclobutrazol treatments and AS 10 -8 , 10 -10 and 10 -14 had higher starch content compared with the control in the clone 981824, while in Cristal were paclobutrazol 0.75 and 1.0 mg L -1 to 241 and 231 mg g -1 , 10 -8 and 10 -12 of AS 165 and 173 mg g -1 . In conclusion paclobutrazol reduces plant height and both this and the AS increase the starch content of the tuber at the indicated concentrations.1144 Rev. Mex. Cienc. Agríc. Vol.7 Núm. 5 30 de junio -13 de agosto, 2016Román Flores-López et al.

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Effect of Paclobutrazol Treatments on Growth and Tuber Yields in Greenhouse-Grown Shepody Seed Potatoes

Cited by 2 publications

References 0 publications

Growth and biomass production in potato grown in the hot tropics as influenced by paclobutrazol

Growth and biomass production in potato grown in the hot tropics as influenced by paclobutrazol

Aplicación periódica de bajas concentraciones de paclobutrazol y ácido salicílico en papa en invernadero

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