Monitoring Nitrogen Status of Organically-grown Strawberry Cultivars by Using Chlorophyll Meter Reading

Güler, Semiha; Macit, İdris; Koç, Aysen; Ibrikçi, H.

doi:10.3923/ajps.2006.753.757

Cited by 6 publications

(5 citation statements)

References 17 publications

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“…To assess the chlorophyll content in a non-destructive way, (SPAD) chlorophyll meter non-destructively evaluates light transference of the plant leaf in the red and infrared wavelengths at 650 and 940 nm, resulting in a numerical output that specifies leaf greenness and chlorophyll concentration [1]. The SPAD chlorophyll meter has also been used in strawberry to assess chlorophyll content [34]. In the present study, we homogenized the growth conditions for both strawberry F 2 populations in term of nitrogen application, temperature and photoperiods and evaluated the chlorophyll content via SPAD values.…”

Section: Discussionmentioning

confidence: 99%

“…Contrasting from the extraction-based approaches, the soil plant analysis development (SPAD) measuring method by a man-portable SPAD chlorophyll meter is a non-destructive, cheap and fast approach for relative chlorophyll measurements [5]. SPAD values, in several crops such as wheat, soybean, rapeseed, Arabidopsis, tomato and strawberry have been frequently used to assess the chlorophyll content [1][2][3][4][5]7,34,35]. Therefore, we evaluated the strawberry leaf chlorophyll content using a SPAD chlorophyll meter.…”

Section: Introductionmentioning

confidence: 99%

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QTL Analysis for Chlorophyll Content in Strawberry (Fragaria × ananassa Duch.) Leaves

et al. 2021

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Chlorophyll is an important factor facilitating plants to capture, allocate and transforms light energy and plays a major role in yield formation. Strawberry is one of the most important fruit crops worldwide. Breeding strawberry for better light utilization by improving photosynthetic efficiency can improve the yield potential. In strawberry, genetic studies have been done for several traits, but no reports on the genetic mapping of chlorophyll content in leaves. In the present study, we used two independent F2 mapping populations (BS-F2 and BC-F2) and, Axiom 35 K strawberry chip and genotyping-by-sequencing derived single nucleotide polymorphisms based linkage maps to identify the quantitative trait loci (QTLs) controlling leaf chlorophyll content. SPAD values were used to estimate the leaf chlorophyll content of parental lines and F2 populations. A total of seven QTLs, including major and minor effects, common and specific to populations, were identified across the strawberry genome explaining phenotypic variation (R2) ranging from 1.4 to 26.4%. Candidate genes associated with the photosynthesis and chlorophyll content were inferred in commonly detected QTLs. This work thus provides not only information for novel loci controlling chlorophyll content in strawberry leaves but also forms the basis for future marker assisted breeding in strawberry to select the plants for required chlorophyll content.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

QTL Analysis for Chlorophyll Content in Strawberry (Fragaria × ananassa Duch.) Leaves

et al. 2021

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“…A total of seven QTL, including major and minor effects, common and specific to populations explained 1.4 to 26.4% of the phenotypic variation in SPAD values. SPAD values reflect the concentration of nitrogen in the leaves of plants, with photosynthesis promoted with high nitrogen levels (Güler et al, 2006).…”

Section: Photosynthesis Varies Across Strawberry Species Hybrids and ...mentioning

confidence: 99%

Climate change increases net CO₂assimilation in the leaves of strawberry, but not yield

Menzel

2023

The Journal of Horticultural Science and Biotechnology

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Fruit growth in strawberry is dependent on photosynthesis in the leaves. The main scenarios for climate change include an increase in the concentration of CO 2 in the atmosphere and an increase in temperature. This review examined photosynthesis in strawberry. The mean photosynthetic photon flux (PPF) for the saturation of CO 2 assimilation was 1,031 ± 447 µmol per m 2 per s, the median was 1,000 µmol per m 2 per s, and the range was from 467 to 2,200 µmol per m 2 per s (N = 59). The mean concentration of CO 2 for the saturation of assimilation was 869 ± 306 ppm, the median was 900 ppm, and the range was from 410 to 1,750 ppm (N = 32). The optimum temperature range for CO 2 assimilation was 20° to 30°C, with lower photosynthesis at lower or higher temperatures. The optimum temperatures for photosynthesis are higher than those for flowering and fruit growth. The impact of climate change on production varies across growing areas. In warm locations, higher temperatures increase photosynthesis, but not yield. In cool locations, higher temperatures increase plant growth and the length of the production season, but this comes at the expense of flower initiation.

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“…Table 7 illustrates the differences in the chlorophyll index of the gorse composts with their differing manure content, as compared to the control (peat) substrate. The chlorophyll index is widely used to assess the N nutritional status of plants, being simpler and more rapid than tissue analysis (Guler et al 2006;Shibaeva et al 2020) and for strawberry, the chlorophyll index has also been related to fruit quality parameters such as the total concentrations of phenols or anthocyanins (Pestana et al 2010;Martínez et al 2017). All substrates had similar chlorophyll values (indicating N levels) at the first sampling date (22 DAT.…”

Section: Crop Nutritionmentioning

confidence: 99%

Using gorse compost as a peat-free growing substrate for organic strawberry production

López-Fabal

López-López

2022

Biological Agriculture & Horticulture

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The demand for peatfree organic growing media has increased and green compost provide an attractive option within a circular economy. To take advantage of the inherent nutrient content, the nutrient dynamics needs to be carefully considered when evaluating the agronomic potential of the compost for organic production. In this study the use of compost made from gorse (Ulex europaeus L.) was evaluated as a substrate for organic production of strawberries (Fragaria x ananassa Duch 'Selva'), investigating in particular availability of nutrients. Two gorse composts were used, gorse composted with poultry manure (5 % v/v) (PM100) and gorse composted on its own without manure (PM0). They were assessed in their original form and in formulations containing different proportions of each. A fertilised standard peat-based substrate was used as control. Both PM0 and PM100 exhibited acceptable physical properties and contained high concentrations of major nutrients (particularly PM100).The nutrient concentrations in the solutions from the different formulations decreased gradually during the growth of the crop, particularly N and K. Concentrations of N and chlorophyll levels were lower in plants grown in gorse compost formulations than in those grown in the control. There were, however, no substantial differences in fruit size or overall yield. The above-ground biomass in the compost-grown plants increased with increased proportions of PM100, but it was greater in the control plants. The gorse composts were recommended as effective peat substitutes for strawberry cultivation, although supplementary fertiliser should be applied at the fruit production stage to ensure optimal production.

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Monitoring Nitrogen Status of Organically-grown Strawberry Cultivars by Using Chlorophyll Meter Reading

Cited by 6 publications

References 17 publications

QTL Analysis for Chlorophyll Content in Strawberry (Fragaria × ananassa Duch.) Leaves

QTL Analysis for Chlorophyll Content in Strawberry (Fragaria × ananassa Duch.) Leaves

Climate change increases net CO₂assimilation in the leaves of strawberry, but not yield

Using gorse compost as a peat-free growing substrate for organic strawberry production

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Monitoring Nitrogen Status of Organically-grown Strawberry Cultivars by Using Chlorophyll Meter Reading

Cited by 6 publications

References 17 publications

QTL Analysis for Chlorophyll Content in Strawberry (Fragaria × ananassa Duch.) Leaves

QTL Analysis for Chlorophyll Content in Strawberry (Fragaria × ananassa Duch.) Leaves

Climate change increases net CO2assimilation in the leaves of strawberry, but not yield

Using gorse compost as a peat-free growing substrate for organic strawberry production

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Climate change increases net CO₂assimilation in the leaves of strawberry, but not yield