Estimate of Leaf Chlorophyll and Nitrogen Content in Asian Pear (Pyrus serotina Rehd.) by CCM-200

Ghasemi, Mostafa; Arzani, K.; Yadollahi, Abbas; Ghasemi, Shiva; Sarikhani, Saadat

doi:10.15835/nsb315623

Cited by 28 publications

(23 citation statements)

References 8 publications

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“…According to these results, 38-87 % of the total variation of LNC of first-and second-flush leaves was explained using CCI as an independent variable (Table 2). This finding is consistent with the results of earlier research conducted on forest trees (Chang and Robison 2003;Van den Berg and Perkins 2004;Percival et al 2008;Salifu et al 2008;Ghasemi et al 2011).…”

Section: Relationship Between CCI and Lncsupporting

confidence: 93%

Estimation of leaf nitrogen concentrations in Quercus robur L. using the CCM-200 portable chlorophyll meter for different patterns of vegetative growth and acorn production

et al. 2016

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The potential of the CCM-200 chlorophyll meter for providing accurate estimates of total nitrogen concentrations was studied from 2009 to 2011 using pedunculate oak (Quercus robur L.) leaves collected in a field trial near Zagreb, Croatia. A fertilization treatment carried out in early spring 2009 and in variable weather conditions caused between-year differences in acorn yield and production of second and third flush shoots. A total of 10 linear calibration equations were constructed based on data from leaves sampled in early July (first flush leaves), in mid-August (second flush leaves) and in mid-September (first and second flush leaves). These equations reliably described (p \ 0.001) the relationships between chlorophyll content index values (CCI) measured by the chlorophyll meter and leaf nitrogen concentration (LNC) with respect to the year and month of sampling. The results suggest that variable seasonal dynamics of LNC are influenced by second and/or third flushes as well as by acorn yield. This finding has negative consequences for applying the chlorophyll meter as a suitable tool for LNC assessments during a growing season or over several growing seasons. However, the chlorophyll meter still proved to be a potentially useful tool for LNC estimations, but only when calibration equations were constructed based on the first flush leaves sampled in mid-September (in the last third of a growing season).

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Section: Relationship Between CCI and Lncsupporting

confidence: 93%

Estimation of leaf nitrogen concentrations in Quercus robur L. using the CCM-200 portable chlorophyll meter for different patterns of vegetative growth and acorn production

et al. 2016

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“…1). Significant correlations between SPAD or CCM readings and leaf N concentration have also been presented by Wang et al (2014) on rice and by Ghasemi et al (2011) on Asian pear. In our study, the highest correlation coefficients between the analysed parameters were shown for the first two dates of leaf sampling and the lowest for the last date.…”

Section: Resultsmentioning

confidence: 83%

Possibilities of using image analysis to estimate the nitrogen nutrition status of apple trees

Treder

Klamkowski

Kowalczyk

et al. 2016

Zemdirbyste-Agriculture

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Precise timing and rate of nitrogen (N) fertilizer application play a major role for crop yield and quality. Prediction of N requirements is necessary for efficient utilization of nitrogen fertilizers. A user-friendly method for estimating foliar nitrogen concentration, based on an analysis of leaf blade colour, was developed in the study. Apple tree (Malus domestica Borkh.) was used as a model species for the validation of the proposed method. Digital recording of adaxial leaf surface was performed using a flatbed scanner. The acquired images were analysed to obtain average values of basic colours: red, green and blue (RGB). Analyses of the relationships between N concentration in the leaves, leaf greenness indices (determined with SPAD-502 and CCM-200 meters) and RGB colour components were performed. The best fitted models were: a multiple regression model based on RGB primary colour values and a model that included the values of the red and blue colours as well as a parameter describing the age of the leaf. The performed tests showed that the analysis of scanned images provided a more precise determination of leaf nitrogen content in apple trees compared to the measurements conducted with leaf greenness meters.

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“…The conventional extraction of leaf chlorophyll with acetone or similar organic solvents is laborious, time consuming and always destructive, requiring tissue extraction and spectrophotometric measurement (Lichtenthaler, 1987;Biber, 2007). Previous research conducted on different species showed significant linear correlation of total chlorophyll (by spectrophotometry) and chlorophyll content index (CCI) values, although with large differences in terms of data correlation (Van den Berg & Perkins, 2004;Ghasemi et al, 2011;Khaleghi et al, 2012;Callejas et al, 2013). The lack of a more consistent relationship between total chlorophyll by extraction and CCI values (non-destructive) for different V. vinifera L. genotypes and in different phenophases limits the potential use of the CCM-200 plus instrument for this specie (Filimon et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Quantitative Investigation of Leaf Photosynthetic Pigments during Annual Biological Cycle of Vitis vinifera L. Table Grape Cultivars

Filimon¹,

Rotaru²,

Filimon

2016

SAJEV

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Variations in chlorophyll a/b and chlorophyll/carotenoid ratios are indicators of senescence, stress or damage to the photosynthetic apparatus and affect the normal course of plant biological processes. The aim of this work was to investigate the chlorophyll (a and b) and carotenoid content and ratios in the leaves of four Vitis vinifera L. table grape cultivars in the main phenophases of the annual biological cycle. During the annual cycle, the moisture content of the leaves decreased significantly (up to 21%), along with a reduction in leaf area and perimeter. Chlorophyll a and b showed a continuous accumulation until grape véraison, with lower values of the Chl a/b ratio at the beginning of the vegetative period. Carotenoids continued their biosynthesis until grape ripening (for another 30 days), at which stage there was a significant decrease in the chlorophyll/carotenoid ratio (2.62 ± 0.31). At véraison, peroxidase had the most intense activity (0.20 to 0.51 U/mg), possibly because of involvement in chlorophyll degradation, while total phenolic content started to decrease. Grape véraison could be regarded as the starting point of foliage senescence. Moreover, the relationship between total chlorophyll (by extraction) and chlorophyll content index (non-destructive method) was very significant (R 2 = 0.92). These results contribute to a better understanding of foliar pigment dynamics and the timing of their decline in order to define the behaviour of table grape cultivars during the annual biological cycle. INTRODUCTIONThe annual life cycle of grapevines is a process that takes place in the vineyard each year, beginning with bud burst in the spring and culminating with leaf fall in autumn, followed by winter dormancy (Creasy & Creasy, 2009). The annual life cycle comprises all morphological and biological changes with a periodic character through which the grapevine passes in a calendar year. These changes are called phenological stages (phenophases) and have a specific starting and ending time and a hereditary character (Wang et al., 2014). The occurrence and duration of phenological phases is influenced by climatic factors, and it should be noted that, under the same climatic conditions, the annual life cycle varies by cultivar (Jones & Davis, 2000). In the temperate continental climate, the annual cycle of grapevines lasts about 160 to 220 days.Chlorophylls (Chl) are probably the most important organic compounds on earth, as they are required for photosynthesis (Davies, 2004;Willows, 2004). Photosynthesis in plants is dependent upon capturing light energy in the pigment chlorophyll, and in particular chlorophyll a (Blankenship, 2014). Photosynthetic activity is a very intense process (5 to 11 μmol CO 2 /m 2 /s) that provides all the organic material needed for the growth and life activity of the plant (Popescu & Popescu, 2014). This is why photosynthesising cells have to contain large amounts of assimilatory pigments (up to 5% of total dry solids; Rabinowitch & Govindjee, 1969). In most species, the photos...

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Estimate of Leaf Chlorophyll and Nitrogen Content in Asian Pear (Pyrus serotina Rehd.) by CCM-200

Cited by 28 publications

References 8 publications

Estimation of leaf nitrogen concentrations in Quercus robur L. using the CCM-200 portable chlorophyll meter for different patterns of vegetative growth and acorn production

Estimation of leaf nitrogen concentrations in Quercus robur L. using the CCM-200 portable chlorophyll meter for different patterns of vegetative growth and acorn production

Possibilities of using image analysis to estimate the nitrogen nutrition status of apple trees

Quantitative Investigation of Leaf Photosynthetic Pigments during Annual Biological Cycle of Vitis vinifera L. Table Grape Cultivars

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