The impact of some agronomic factors on the variability of potato tuber size distribution

Wurr, D. C. E.; Fellows, Jane R.; Lynn, James R.; Allen, E. J.

doi:10.1007/bf02360532

Cited by 11 publications

(17 citation statements)

References 8 publications

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“…Moreover, Wurr et al (1993) reported not being able to demonstrate that total tuber number affected CV, and they suggested a complex influence. Our findings indicate that the drought pattern, severity, and the tuberization stage of the plant affected by the drought may be more directly responsible for the impact on CV than the supposed relationship between drought effects on tuber number and CV.…”

Section: Differences In Drought Scenariosmentioning

confidence: 96%

“…Therefore, the photosynthetic duration is maturity-dependent, but the effective use of photosynthates for tubers bulking may be highly genotype-dependent within the maturity class. The spread of the distribution (TBN spread and TBW spread) is another important tuber size distribution parameter that describes the degree of variation in the sizes of potato tubers at harvest (Wurr et al 1993). Often, a wide spread of tuber size would imply that the larger-sized tubers are also present.…”

Section: Differences In Drought Scenariosmentioning

confidence: 99%

“…In earlier studies, coefficient of variation (CV) has also been used to describe the relative variation in TSD. TSD CV is defined as ((spread of distribution/class size containing the highest tuber yield) * 100) (Wurr et al 1993). The findings from these earlier studies are that a drought treatment did not affect TSD CV (Marshall and Thompson 1986;Wurr et al 1993).…”

Section: Differences In Drought Scenariosmentioning

confidence: 99%

“…TSD CV is defined as ((spread of distribution/class size containing the highest tuber yield) * 100) (Wurr et al 1993). The findings from these earlier studies are that a drought treatment did not affect TSD CV (Marshall and Thompson 1986;Wurr et al 1993). However, in our study we observed a differential effect of drought on TSD CV depending on the drought pattern and possibly the drought severity.…”

Section: Differences In Drought Scenariosmentioning

confidence: 99%

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Genetic mapping of tuber size distribution and marketable tuber yield under drought stress in potatoes

et al. 2019

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Drought sensitivity of potato leads to a reduction in total tuber yield and marketable yield. An investigation of drought effects on tuber yield attributes will facilitate our understanding of how to reduce such huge yield losses. We have evaluated tuber yield, tuber size distribution and marketable yield of a set of 103 European commercial potato cultivars under irrigated and non-irrigated conditions in the field. The multi-year results from two locations, Connantre, France (2013-2015) and Nieuw-Namen in Zeeland, The Netherlands (2013-2014), were analysed. We used Normal and Gamma Distribution models to describe the tuber size distribution of tuber fresh weight and tuber number, respectively. The interactions among parameters of tuber size distribution and total/marketable tuber yield traits were analysed using correlation matrices and biplots. Finally, we used a 14K Infinium SNP marker array to find associations between the parameters or traits and genetic loci on the potato genome. Late foliage maturity facilitated a wider spread of tuber size distribution in favour of larger-sized tubers. Drought effects on total yield were representative of their impact on marketable yield, however, absolute values of total tuber number may not be indicative of marketable number of tubers. We found significant marker-trait associations between a region on chromosome 3 and the spread of tuber number distribution, size class with maximum tuber number and marketable fractions of tuber number and tuber weight. These findings will contribute to improvement and selection for drought tolerance in potato. Keywords Drought Á Association panel Á Marketable tubers Á Size Á Modelling Á Yield Abbreviations TBW Tuber fresh weight TBN Tuber number TBW MX Maximum tuber fresh weight observed among size classes TBW mcs Average tuber size of the class at which TBW MX occurs TBW spread Wideness or spread of tuber size distribution of tuber fresh weight TBN ms Tuber number mean size Electronic supplementary material The online version of this article (

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Section: Differences In Drought Scenariosmentioning

confidence: 96%

Section: Differences In Drought Scenariosmentioning

confidence: 99%

Section: Differences In Drought Scenariosmentioning

confidence: 99%

Section: Differences In Drought Scenariosmentioning

confidence: 99%

See 2 more Smart Citations

Genetic mapping of tuber size distribution and marketable tuber yield under drought stress in potatoes

et al. 2019

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“…The design used to harvest potatoes is based on the horizontal and vertical distribution of tubers as well as the sowing depth (Zhang, 2014 ). Several factors affect the potato tuber distribution (Wurrt et al, 1993 ). For instance, stolon plays a decisive role in the size and distribution of tubers, and larger leaf areas and the accumulation of leaf dry matter are beneficial to the stolon formation (Liu et al, 2003 ).…”

Section: Introductionmentioning

confidence: 99%

Response of Potato Tuber Number and Spatial Distribution to Plant Density in Different Growing Seasons in Southwest China

Zheng

Wang²,

Nianxin

et al. 2016

Front. Plant Sci.

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The aim of this study was to explore the effects of different density treatments on potato spatial distribution and yield in spring and fall. Plant density influenced yield and composition, horizontal, and vertical distribution distances between potato tubers, and spatial distribution position of tuber weights. The results indicated that: (1) Spring potato yield had a convex quadratic curve relationship with density, and the highest value was observed at 15.75 × 104 tubers per hectare. However, the yield of fall potatoes showed a linear relationship with plant density, and the highest value was observed at 18 × 104 tubers per hectare; (2) Density had a greater influence on the tuber weight of spring potatoes and fruit number of single fall potatoes; (3) The number of potato tubers in the longitudinal concentration exhibited a negative linear relationship with density, whereas the average vertical distribution distance of tubers exhibited a positive incremental hyperbolic relationship. For spring and fall potato tubers, the maximum distances were 8.4152 and 6.3316 cm, and the minimum distances 8.7666 and 6.9366 cm, respectively; and (4) Based on the artificial neural network model of the spatial distribution of tuber weight, density mainly affected the number and spatial distribution of tubers over 80 g. Tubers over 80 g were mainly distributed longitudinally (6–10 cm) and transversely (12–20 cm) within the high density treatment, and the transverse distribution scope and number of tubers over 80 g were reduced significantly. Spring potato tubers over 80 g grown at the lowest density were mainly distributed between 12 and 20 cm, whereas those at the highest density were primarily distributed between 10 and 15 cm.

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Photoperiodin vitro affects subsequent yield of Greenhouse-grown potato tubers

Seabrook¹,

Percy²,

Douglass³

et al. 1995

American Potato Journal

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The impact of some agronomic factors on the variability of potato tuber size distribution

Cited by 11 publications

References 8 publications

Genetic mapping of tuber size distribution and marketable tuber yield under drought stress in potatoes

Genetic mapping of tuber size distribution and marketable tuber yield under drought stress in potatoes

Response of Potato Tuber Number and Spatial Distribution to Plant Density in Different Growing Seasons in Southwest China

Photoperiodin vitro affects subsequent yield of Greenhouse-grown potato tubers

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