Light Harvesting and Photosynthesis by the Canopy

Matloobi, Mansour

doi:10.5772/27592

Cited by 10 publications

(12 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3). 510 (Baldocchi and Amthor, 2001;Koblet, 1984;Matloobi, 2012). Field et al (2009) reported that the shoot and trunk dry biomass of potted Shiraz grapevines grown at 23 °C in a glasshouse were significantly greater than those grown at 13 °C.…”

Section: Resultsmentioning

confidence: 99%

Effect of Light Intensity and Temperature on Growth and Quality Parameters of Grafted Vines

Köse

2014

Not Bot Hort Agrobot Cluj

View full text Add to dashboard Cite

Light and temperature are the most important environmental conditions that impact the growth and quality of grafted vines. In this research, the most suitable light and temperature conditions were tested to determine the best environment for grafted vines grown in pots. This study was conducted to determine the influence of different growth conditions, such as open field, shaded greenhouse and unshaded greenhouse, on grafted vine growth and quality. The length and diameter of shoot, trunk diameter, mean and total leaf area, total soluble sugars, starch and total carbohydrate contents of 'Narince' and 'Trakya Ilkeren' vines, grafted on 5C rootstock, were investigated in this study. Shaded conditions yielded significantly higher shoot lengths, mean and total leaf areas than other conditions (p<0.05). Among the growth parameters, the highest correlation (r = 0.819) was observed between shoot length and plant total leaf area (p<0.01). The total soluble sugars, starch and total carbohydrates content of vines under shaded and unshaded conditions were higher (p<0.05) than those under open field conditions. Grafted vines had the highest carbohydrate content in unshaded conditions. Under different light intensity, temperature and relative humidity conditions studied, the better results were obtained in the case of unshaded conditions.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Light Intensity and Temperature on Growth and Quality Parameters of Grafted Vines

Köse

2014

Not Bot Hort Agrobot Cluj

View full text Add to dashboard Cite

show abstract

“…1B, E). Assimilation is dependent enzyme activities, and changes in temperature of a few degrees centigrade may have considerable impacts over the entire photosynthetic processes (Bernacchi et al 2001;Matloobi 2012). The optimum temperature of P n was about 27 in natural conditions and it shifted to a higher temperature as T a , CO 2 increases or RH decreases (Fig.…”

Section: Discussionmentioning

confidence: 98%

“…Canopy light interception is a pre-condition for estimating photosynthesis and transpiration. Many models have been devoted to simulating light interception in recent years (Restrepo-Díaz et al 2010;Matloobi 2012). The Lanbert-beer law can be used to describe the light interception in the canopy of fruit trees (Nerozzi et al 1997).…”

Section: Introductionmentioning

confidence: 99%

“…The Lanbert-beer law can be used to describe the light interception in the canopy of fruit trees (Nerozzi et al 1997). The biochemical model of C 3 photosynthesis proposed by Farquhar et al (1980) has been widely used into models scaling from single leaves to global climate simulations (Egea et al 2011;Matloobi 2012). And many authors described the relation between CO 2 assimilation rate and environmental factors of C 3 plant by the model (Ball 1987;Collatz et al 1991;Leuning 1990).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Dynamic Simulation of Photosynthesis in Apple Tree Canopy

Gao

Liu

Hongyan³

2015

2015 Sixth International Conference on Intelligent Systems Design and Engineering Applications (ISDEA)

View full text Add to dashboard Cite

Coupled model of canopy photosynthesis (P n ) and stomatal conductance (G s ) was presented. This model could simulate the response of P n to microclimatic factors and the diurnal courses of P n . The influences of the microclimatic factors on photosynthesis were different. There were strong interactions among the various microclimatic factors. The results showed that photosynthesis was mainly driven by the net radiation and CO 2 concentration. Since CO 2 concentration in the existing environment remained relatively stable, the net radiation became the major driving factor of photosynthesis. From this model, we can see that only one peak appeared in the diurnal courses of photosynthesis, and this photosynthetic peak reached at midday. These established models were tested by the observation data in an apple (Malus pumila Mill. 'Fuji') orchard (latitude 40 o 13' north, longitude 116 o 13′east, altitude 79 m). On the basis of this model, we predicted that during a whole day an apple tree with leaf area of 37.95 m 2 would fix 420-560 g of CO 2 on clear days, and fix 120-200 g of CO 2 on cloudy days. There was a satisfactory correspondence between measured and simulated values of P n with observation data in the apple orchard.

show abstract

“…Photosynthetic capacity at canopy level depends not only on factors affecting leaf level photosynthesis but also on factors influencing properties of canopy microclimate, particularly its light distribution profile (Matloobi 2012).…”

Section: Vertical Distributions Of Light In Kenaf Canopymentioning

confidence: 99%

Crop Physiology in Relation to Agronomic Management Practices

Scordia

Testa

Cosentino

2013

Kenaf: A Multi-Purpose Crop for Several Industrial Applications

View full text Add to dashboard Cite

This chapter describes the physiology of kenaf from seed germination and root development till the effects of water and nutrients stress on grown plants. Review on kenaf agro-physiology of experiments carried out worldwide are presented and discussed mainly at the canopy and whole-plant level with the aim to help producers to make decisions and planning of production. However, few literature reports experimental results on the physiology of this multipurpose crop especially in terms of assimilation rate and its relation with environmental and agronomic factors. Knowledge on gas exchange rate and stomatal conductance may be a key support in understanding the physiology of Kenaf in terms of water requirements, its ability of light conversion into carbonaceous molecules influencing crop production potential and, indirectly, the carbon sequestration activity. In kenaf seedling development takes place when temperatures are higher than 10 °C, supporting the idea that kenaf is a macrothermal plant and optimal sowing has to be carried out during springsummer, depending on the area of cultivation. Kenaf is very sensitive to reduced soil water availability, however, under moderate water stress conditions the crop maintains root development while reducing final biomass yield. Recent studies from Greece and Italy showed that even though kenaf uses CO 2 , solar radiation, water, and nitrogen less efficiently than C 4 crops its assimilation rates can reach 50-58 kg of CO 2 ha −1 h −1 . However, great differences in terms of net photosynthesis have been reported by various authors, which may be related to the different environmental variables and agronomic managements during field and controlled experimental environments, such as air temperature, light intensity, water supply, nutrients availability, relative humidity, wind, cultivar, plant density, and soil type. Similar results were reported in the literature regarding stomatal conductance and transpiration rates. In experiments carried out during the night, stomatal conductance and transpiration rate determined

show abstract

Light Harvesting and Photosynthesis by the Canopy

Cited by 10 publications

References 51 publications

Effect of Light Intensity and Temperature on Growth and Quality Parameters of Grafted Vines

Effect of Light Intensity and Temperature on Growth and Quality Parameters of Grafted Vines

The Dynamic Simulation of Photosynthesis in Apple Tree Canopy

Crop Physiology in Relation to Agronomic Management Practices

Contact Info

Product

Resources

About