Effects of Drought and Shading on Non-structural Carbohydrate Stored in the Stem of Potato (<i>Solanum tuberosum</i>L.)

Zheng, Xu; Jitsuyama, Yutaka; Terauchi, Takayoshi; Iwama, Kazuto

doi:10.1626/pps.12.449

Cited by 8 publications

(5 citation statements)

References 22 publications

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“…So the non-structural reserves remaining in the plant at maturity could indicate that there is an excessive source of assimilates in the plant during grain filling [ 54 ]. In potato, Zheng et al reported that non-structural reserves stored in the stem also contribute to tuber growth [ 55 ]. Non-structural reserves are remobilized from underground stem first, because the underground stem is the closest to the tuber.…”

Section: Discussionmentioning

confidence: 99%

Regulation Effects of Water and Nitrogen on the Source-Sink Relationship in Potato during the Tuber Bulking Stage

Xiong

Wang

et al. 2016

PLoS ONE

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The source-sink relationship determines crop yield, and it is largely regulated by water and nutrients in agricultural production. This has been widely investigated in cereals, but fewer studies have been conducted in root and tuber crops such as potato (Solanum tuberosum L.). The objective of this study was to investigate the source-sink relationship in potato and the regulation of water and nitrogen on the source-sink relationship during the tuber bulking stage. A pot experiment using virus-free plantlets of the Atlantic potato cultivar was conducted, using three water levels (50%, 70% and 90% of field capacity) and three nitrogen levels (0, 0.2, 0.4 g N∙kg−1 soil). The results showed that, under all water and nitrogen levels, plant source capacity were small at the end of the experiment, since photosynthetic activity in leaves were low and non-structural reserves in underground stems were completely remobilized. While at this time, there were very big differences in maximum and minimum tuber number and tuber weight, indicating that the sink tuber still had a large potential capacity to take in assimilates. These results suggest that the source-supplied assimilates were not sufficient enough to meet the demands of sink growth. Thus, we concluded that, unlike cereals, potato yield is more likely to be source-limited than sink-limited during the tuber bulking stage. Water and nitrogen are two key factors in potato production management. Our results showed that water level, nitrogen level and the interaction between water and nitrogen influence potato yield mainly through affecting source capacity via the net photosynthetic rate, total leaf area and leaf life span. Well-watered, sufficient nitrogen and well-watered combined with sufficient nitrogen increased yield mainly by enhancing the source capacity. Therefore, this suggests that increasing source capacity is more crucial to improve potato yield.

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Section: Discussionmentioning

confidence: 99%

Regulation Effects of Water and Nitrogen on the Source-Sink Relationship in Potato during the Tuber Bulking Stage

Xiong

Wang

et al. 2016

PLoS ONE

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“…Lodging and shading reduce root and shoot dry weight, number of pods per plant, number of seeds per plant, 100-seed weight and yield, the quality of grain, and the effi ciency of mechanical harvesting (Cooper, 197l;Shapiro and Flowerday, 1987;Mancuso and Caviness, 1991;Zheng et al, 2009). Harvest loss due to lodging has been reported to be 22% of potential yield in soybean (Noor and Caviness, 1980) and 21% in barley (Briggs, 1990).…”

Section: Discussionmentioning

confidence: 99%

Seed Treatment with Uniconazole Powder Improves Soybean Seedling Growth under Shading by Corn in Relay Strip Intercropping System

Yan

Gong

Yang

et al. 2010

Plant Production Science

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“…Drought conditions interfere with stem structure and availability of transport materials (Banik et al 2016;Zheng et al 2009). Our findings from a multidisciplinary approach combining physiological, biochemical, microscopic and MRI methodologies, suggest that adaptations of the potato plant transport system to dehydration conditions may improve drought tolerance.…”

Section: Discussionmentioning

confidence: 81%

Morphological and physiological responses of the potato stem transport tissues to dehydration stress

Aliche

Prusova-Bourke

Ruiz-Sanchez

et al. 2020

Planta

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Effects of Drought and Shading on Non-structural Carbohydrate Stored in the Stem of Potato (Solanum tuberosumL.)

Cited by 8 publications

References 22 publications

Regulation Effects of Water and Nitrogen on the Source-Sink Relationship in Potato during the Tuber Bulking Stage

Regulation Effects of Water and Nitrogen on the Source-Sink Relationship in Potato during the Tuber Bulking Stage

Seed Treatment with Uniconazole Powder Improves Soybean Seedling Growth under Shading by Corn in Relay Strip Intercropping System

Morphological and physiological responses of the potato stem transport tissues to dehydration stress

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