Variations in stolon length and in incidence of tuber roots among eight potato cultivars

Kratzke, Marian G.; Palta, Jiwan P.

doi:10.1007/bf02852128

Cited by 9 publications

(5 citation statements)

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“…Similar conclusions were stated by Engels and Marschner (1986) who found a significant correlation between the growth rate of tubers and the volume and cross-sectional area of the phloem. The final size of the stolon has been reported as a consistent genetic trait (Kratzke and Palta, 1992) and crucial for tuber size distribution (Struik et al, 1991). Thus short stolons could be included as selection criteria for the production of larger tubers in potato breeding, or conversely long stolons for smaller tubers to meet a specialist market.…”

Section: Discussionmentioning

confidence: 99%

An Explanation of Yield Differences in Three Potato Cultivars

et al. 2016

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A gronomy J our n al • Volume 10 8 , I ssue 4 • 2 016 P otato is a staple crop worldwide, ranking fourth aft er maize (Zea mays L.), rice (Oryza sativa L.), and wheat (Triticum aestivum L.). As potato consumption increases there is a need to understand the mechanisms that drive its yield. However, the origins of yield diff erences are rarely made clear in cultivar comparisons (Van Der Zaag and Doornbos, 1987) and breeding programs.Potato crop growth and tuber yields have been linked to the duration of the growth cycle, which depends on climate, cultivar, and crop management (Kooman et al., 1996a(Kooman et al., , 1996b. Th erefore, assuming optimum crop management, diff erences in tuber yield among potato cultivars can be explained by differences in accumulated intercepted radiation, the utilization coeffi cient of foliage followed by DM distribution within the plant (Van Der Zaag and Doornbos, 1987). Indeed, the amount of radiation intercepted by a crop and the RUE provide a useful basis for investigating yield variation (Monteith, 1977). From this concept, a simple model to express potato DM growth has been reported (Jamieson et al., 2004) as:where Y is the tuber yield, R o is the daily incident solar radiation received, R/R o is the daily fraction of R o which is intercepted by the canopy (R being the daily average radiation intercepted by the plant), and RUE is the overall photosynthetic effi ciency of the crop (i.e., the effi ciency of conversion of radiant to chemical potential energy). Th e HI is the fraction of the dry matter produced which is allocated to the tubers. Th e integration of these components over time (t; days) from crop emergence (em) allows the description of biomass accumulation in terms of plant development processes. Th is is a common approach used for potato yield analysis (Van Der Zaag and Doornbos, 1987;Spitters et al., 1989;Ellissèche and Hoogerndoorn, 1995) and simulation models of potato yield (Jamieson et al., 2004). Th e amount of radiation intercepted by the crops is reportedly the central component to explain ABSTRACTUnder ideal growing conditions, yield is the product of intercepted photosynthetically active radiation (PAR i ) and its conversion effi ciency to dry matter (radiation use effi ciency, RUE). For potato (Solanum tuberosum L.) the ability of the leaf to convert the PAR i into carbohydrates (source) and the storage capacity of the tubers (sink) aff ect the potential growth of individual tubers and therefore crop yield. Th is study describes these mechanisms for three commercial potato cultivars (Bondi, Fraser, and Russet Burbank) grown in non-limiting fi eld conditions. At fi nal harvest Bondi had the largest tuber yield and produced heavier but fewer tubers compared with Fraser and Russet Burbank. All crops had similar total accumulated radiation interception (R cum ), and yield diff erences were explained by the RUE which was highest for Bondi, lowest for Fraser, with Russet Burbank intermediate. Fraser had the lowest rate of canopy senescence, maintained the lowe...

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Section: Discussionmentioning

confidence: 99%

An Explanation of Yield Differences in Three Potato Cultivars

et al. 2016

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“…There is considerable genotypic variation in both root growth and root architecture in potato (Ahmadi et al 2017;Allen and Scott 1992;Fernandes et al 2014;Harris 1992;Iwama 1998Iwama , 2008Iwama and Nishibe 1989;Iwama et al 1981ab, 1999Jefferies 1993;Kratzke and Palta 1992;Lahlou and Ledent 2005;MacKerron and Peng 1989;Puértolas et al 2014;Sattelmacher et al 1990;Stalham and Allen 2001;Steckel and Gray 1979;Sharma 2003, 2005;Trehan and Singh 2013;van Loon 1986;White et al 2005a;Wishart et al 2013Wishart et al , 2014. Furthermore, genotypic variation in the number, diameter, length, surface area and fresh weight (FW) of basal and stolon roots observed in field-grown plants 10 weeks after planting can also be observed in glasshouse-grown plants two weeks after emergence (Wishart et al 2013), suggesting that relevant aspects of root architecture can be screened rapidly and cost effectively.…”

Section: Introductionmentioning

confidence: 99%

Juvenile root vigour improves phosphorus use efficiency of potato

et al. 2018

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Aims Potato (Solanum tuberosum L.) has a large phosphorus (P)-fertiliser requirement. This is thought to be due to its inability to acquire P effectively from the soil. This work tested the hypothesis that early proliferation of its root system would enhance P acquisition, accelerate canopy development, and enable greater yields. Methods Six years of field experiments characterised the relationships between (1) leaf P concentration ([P]leaf), tuber yield, and tuber P concentration ([P]tuber) among 27 Tuberosum, 35 Phureja and 4 Diploid Hybrid genotypes and (2) juvenile root vigour, P acquisition and tuber yield among eight Tuberosum genotypes selected for contrasting responses to P-fertiliser. Results Substantial genetic variation was observed in tuber yield, [P]leaf and [P]tuber. There was a strong positive relationship between tuber yields and P acquisition among genotypes, whether grown with or without P-fertiliser. Juvenile root vigour was correlated with accelerated canopy development and both greater P acquisition and tuber biomass accumulation early in the season. However, the latter relationships became weaker during the season. Conclusions Increased juvenile root vigour accelerated P acquisition and initial canopy cover and, thereby, increased tuber yields. Juvenile root vigour is a heritable trait and can be selected to improve P-fertiliser use efficiency of potato.

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“…buds on the layering that are the primary shoot-producing meristematic organs [34], [35], [36], [37], [38]. The clonal growth of a size-dependent clone is common [33], [38], [39], [40], [41]. One study found that the big Glechoma hederacea clone developed a greater number of ramets under favorable conditions [38].…”

Section: Introductionmentioning

confidence: 99%

Effects of Aspect on Clonal Reproduction and Biomass Allocation of Layering Modules of Nitraria tangutorum in Nebkha Dunes

et al. 2013

PLoS ONE

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The formation of many nebkha dunes relies on the layering of clonal plants. The microenvironmental conditions of such phytogenic nebkha are heterogeneous depending on the aspect and slope. Exploring the effects of aspect on clonal reproduction and biomass allocation can be useful in understanding the ecological adaptation of species. We hypothesized that on the windward side layering propagation would be promoted, that biomass allocation to leaves and stems of ramets would increase, and that the effects of aspect would be greater in the layering with larger biomass. To test these hypotheses, we surveyed the depth of germination points of axillary buds, the rate of ramet sprouting, the density of adventitious root formation points, and the biomass of modules sprouting from layering located on the NE, SE, SW and NW, aspects of Nitraria tangutorum nebkhas. The windward side was located on the NW and SW aspects. The results indicated that conditions of the NW aspect were more conducive to clonal reproduction and had the highest rate of ramet sprouting and the highest density of adventitious formation points. For the modules sprouting from layering on the SW aspect, biomass allocation to leaves and stems was greatest with biomass allocation to adventitious roots being lowest. This result supported our hypothesis. Contrary to our hypothesis, the effects of aspect were greater in layering of smaller biomass. These results support the hypothesis that aspect does affect layering propagation capacity and biomass allocation in this species. Additionally, clonal reproduction and biomass allocation of modules sprouting from layering with smaller biomass was more affected by aspect. These results suggest that the clonal growth of N. tangutorum responses to the microenvironmental heterogeneity that results from aspect of the nebkha.

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Variations in stolon length and in incidence of tuber roots among eight potato cultivars

Cited by 9 publications

References 18 publications

An Explanation of Yield Differences in Three Potato Cultivars

An Explanation of Yield Differences in Three Potato Cultivars

Juvenile root vigour improves phosphorus use efficiency of potato

Effects of Aspect on Clonal Reproduction and Biomass Allocation of Layering Modules of Nitraria tangutorum in Nebkha Dunes

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