Seasonal Changes in Starch Content and Forecasts of the Amount of Blossom based on the Content of Starch in the Root of Satsuma Mandarin cv. ‘Aoshima Unshu’ Trees

泰之, 杉山; 晃, 大城; 櫻, 濵﨑; 郁夫, 澤野; 均, 小原

doi:10.2503/hrj.5.277

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…To date, predictions of the number of citrus flowers have been based on starch contents (Sugiyama et al, 2006). However, starch contents are not directly correlated with floral induction.…”

Section: Introductionmentioning

confidence: 99%

Predicting the Number of Flowers in Satsuma Mandarin (Citrus unshiu Marc.) Trees Based on Citrus FLOWERING LOCUS T mRNA Levels

et al. 2017

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In citrus trees, a technique for predicting the number of flowers is needed to prevent inconsistent fruit production over time. In this study, we investigated whether a flowering-related gene, citrus FLOWERING LOCUS T (CiFT), can be used to predict floral production. We quantified CiFT expression levels in stems of Satsuma mandarin (Citrus unshiu Marc.) trees planted at two remote locations. We collected samples over 3 years, and determined that the CiFT mRNA levels in November were strongly correlated with the number of flowers produced the following spring. The correlation between CiFT expression and floral production exhibited almost no differences among years or between sample collection sites. Thus, the CiFT expression level in November can be used to predict the number of flowers the following spring, and this prediction method can be used at different locations and over several years. To verify the practical utility of this method, Satsuma mandarin shoots were transported in November from eight locations across Japan to our laboratory under cool conditions. Transport times were approximately 4-72 h, and samples were immediately frozen upon arrival. The CiFT expression levels in transported stems correlated with the number of flowers in the following spring. Additionally, those correlations were similar in transported samples and samples that were frozen immediately after collection. Our results suggest that the number of flowers can be predicted even with the CiFT expression levels quantified in transported samples.

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“…To date, predictions of the number of citrus flowers have been based on starch contents (Sugiyama et al, 2006). However, starch contents are not directly correlated with floral induction.…”

Section: Introductionmentioning

confidence: 99%

Predicting the Number of Flowers in Satsuma Mandarin (Citrus unshiu Marc.) Trees Based on Citrus FLOWERING LOCUS T mRNA Levels

et al. 2017

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“…19 Because of global warming in recent years, winters also tend to have days with relatively high temperatures. Sugiyama et al 20 reported that Satsuma mandarin trees show photosynthetic ability in January and February even though the photosynthetic rate is low. In February, it has approximately half the photosynthetic ability of that in November.…”

Section: Discussionmentioning

confidence: 99%

Relationship between Satsuma mandarin yield and meteorological factors in Shizuoka and distribution of alternative flowering indices in Mikkabi production area, Japan

Yamaga

Unno

2023

J Sci Food Agric

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BACKGROUND Biennial bearing, the biggest factor destabilizing citrus fruit production, is primarily attributed to unfavorable weather changes. However, the relationship between the yield of Satsuma mandarin for more than 50 years and the weather remains poorly understood. Therefore, the present study investigated the effect of meteorological factors, such as average temperature, precipitation, and sunshine duration, on the yield of Satsuma mandarin in Shizuoka Prefecture, Japan. We analyzed fruit production statistics and meteorological observation data from 1961 to 2018. Furthermore, we investigated the alternative indices of flowering and sprouting in each of the 20 districts of Mikkabi Town, Hamamatsu City, Shizuoka Prefecture. RESULTS We detected a positive correlation between the average temperatures in March and February and yields in Shizuoka and Hamamatsu Cities. All alternative indices, except flowering in the early‐maturing cultivar, were significantly lower in the southern than in the northern districts (P < 0.01 or 0.05). Particularly, the alternative index of flowering in the late‐maturing cultivar was significantly different between the northern and southern districts (P < 0.01). Furthermore, we found a negative correlation between the mean annual temperature or average temperature from January to April and alternative indices of flowering and sprouting. CONCLUSION The findings of our field survey in Mikkabi production area suggest that mean annual temperature may affect the biennial bearing of Satsuma mandarin. © 2023 Society of Chemical Industry.

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“…Most studies have evaluated seasonal variations in carbohydrates of citrus tree (Garcia-Luis et al, 1995;Goldschmidt, 1999;Mataa et al, 1996;Monerri et al, 2011;Ruiz and Guardiola, 1994;Sugiyama et al, 2006), but have not measured the differences between individual soluble sugars, except for 'Washington Navel' orange leaf (Sanz et al, 1987) and 'Ponkan' mandarin bark and xylem . In this study, the sucrose was the dominant soluble carbohydrate in leaves.…”

Section: Samplingmentioning

confidence: 99%

Seasonal Patterns of Carbohydrates in Mandarin cvs. â€˜Fremontâ€™, â€˜Novaâ€™ and â€˜Robinsonâ€™ on Different Rootstocks

Yıldız

Kaplankıran

Demirkeser

et al. 2013

Not Bot Hort Agrobot Cluj

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The study was conducted at the experimental farm of Mustafa Kemal University, DÃ¶rtyol, Turkey during the 2010 and 2011 growing seasons. The aim of this study was to investigate the effect of â€˜Troyerâ€™ and â€˜Carrizoâ€™ citranges (Poncirus trifoliata Raf. Ã— Citrus sinensis Osb. var. â€˜Troyerâ€™ and â€˜Carrizoâ€™), and common sour orange (Citrus aurantium L. var. common), rootstocks on the seasonal variation of carbohydrate content in the leaves of cvs. â€˜Fremontâ€™, â€˜Novaâ€™, and â€˜Robinsonâ€™ mandarin. The seasonal variation of carbohydrate content of the three cultivars budded on different rootstocks was nearly same. Soluble carbohydrate concentration showed a continuous decrease from January to mid or late-summer, and then slowly began to increase after early autumn till winter. The sucrose was the dominant soluble carbohydrate in leaves. The seasonal evolution of starch content in leaves increased initially during January to March, and then decreased in April. The starch concentration showed a continuous decrease slowly until the mid-autumn, and then accumulation began during late-autumn and winter. The total carbohydrate content differences among the rootstocks were significant, but the content was changed among the cultivars and according to the season. The change in the total carbohydrate content of leaf tissues showed a strong similarity in cultivars budded on different rootstocks throughout the year. The total carbohydrate content reached their lowest levels in July for cv. â€˜Robinsonâ€™, in August for cv. â€˜Fremontâ€™ and cv. â€˜Novaâ€™. The total carbohydrate content in leaves increased from the mid- or late-summer to winter. It is suggested that the seasonal variation of carbohydrate content in plant tissues can be considered during fertilization program in mandarin trees.

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Seasonal Changes in Starch Content and Forecasts of the Amount of Blossom based on the Content of Starch in the Root of Satsuma Mandarin cv. ‘Aoshima Unshu’ Trees

Cited by 5 publications

References 8 publications

Predicting the Number of Flowers in Satsuma Mandarin (<i>Citrus unshiu</i> Marc.) Trees Based on Citrus <i>FLOWERING LOCUS T</i> mRNA Levels

Predicting the Number of Flowers in Satsuma Mandarin (<i>Citrus unshiu</i> Marc.) Trees Based on Citrus <i>FLOWERING LOCUS T</i> mRNA Levels

Relationship between Satsuma mandarin yield and meteorological factors in Shizuoka and distribution of alternative flowering indices in Mikkabi production area, Japan

Seasonal Patterns of Carbohydrates in Mandarin cvs. â€˜Fremontâ€™, â€˜Novaâ€™ and â€˜Robinsonâ€™ on Different Rootstocks

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