Photosynthesis and Quantum Yield of Oil Palm Seedlings to Elevated Carbon Dioxide

Jaafar, Hawa Z. E.; Ibrahim, Mohd Hafiz

doi:10.5772/26167

Cited by 11 publications

(8 citation statements)

References 61 publications

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“…Baligar et al (2008) have previously reported an average reduction of 65% in g s in response to increasing instantaneous CO 2 concentration in three different cacao varieties which in turn improved WUE i . Similarly, in oil palm and the tropical tree species Luehea seemannii, g s declined with increasing CO 2 concentration (Jaafar andIbrahim 2012, Lovelock et al 1999). An increase in WUE in response to elevated CO 2 has been widely reported in a number of species due to an enhancement of P max , a reduction in g s or a combination of both (Wullschleger et al 2002).…”

Section: Discussionmentioning

confidence: 97%

The impact of elevated CO<sub>2</sub> and water deficit stress on growth and photosynthesis of juvenile cacao (Theobroma cacao L.).

Lahive¹,

Hadley²,

Daymond³

2018

Photosynt.

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Atmospheric CO2 concentration continues to rise and is predicted to reach approximately 700 ppm by 2100. Some predictions suggest that the dry season in West Africa could be extended with climate change. This study examined the effects of elevated CO 2 concentration and water deficit on growth and photosynthesis of juvenile cacao. Light-saturated photosynthesis (P max ), quantum efficiency, and intrinsic water-use efficiency increased significantly in response to elevated CO 2 , as did a range of growth and development responses (e.g. leaf area and leaf number), but the magnitude of the increase was dependent on the water treatment. Stomatal index was significantly greater in the elevated CO 2 treatment; an atypical response which may be a reflection of the environment in which cacao evolved. This study shows a positive effect of elevated CO 2 on juvenile cacao which may help to alleviate some of the negative impacts of water deficit stress.

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Section: Discussionmentioning

confidence: 97%

The impact of elevated CO<sub>2</sub> and water deficit stress on growth and photosynthesis of juvenile cacao (Theobroma cacao L.).

Lahive¹,

Hadley²,

Daymond³

2018

Photosynt.

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“…Although the maximum quantum efficiency of PSII photochemistry (F v /F m ) has been thought to provide a simple and rapid way of monitoring stress, stress-induced decreases in efficiency are often complex (Baker, 2008). Since the A, φ CO2 , and F v /F m are factors involved in the determination of photosynthetic efficiency ( Jaafar and Ibrahim, 2012), a greater photosynthetic efficiency could be a tolerant response to salt stress. Grare (2010), who captured chlorophyll fluorescence images for two M. sinensis genotypes, stated that PSII efficiency was greatly influenced by salt concentrations more than 100 mM NaCl under both dark and light conditions.…”

Section: Discussionmentioning

confidence: 99%

“…However, no significant changes in F v /F m were observed in our study (data not shown), indicating that excess energy was efficiently dispersed without PSII inactivation. Since the A, φ CO2 , and F v /F m are factors involved in the determination of photosynthetic efficiency ( Jaafar and Ibrahim, 2012), a greater photosynthetic efficiency could be a tolerant response to salt stress. The exclusion of Na + and Cland the maintenance of a high uptake of K + are closely related to salinity tolerance (Grare, 2010;Munns and James, 2003;Munns et al, 2010), while uptake of other minerals (e.g., N, P, and Ca 2+ ) was hardly affected by salt stress in M. sinensis (Grare, 2010).…”

Section: Discussionmentioning

confidence: 99%

Salinity Effects on Germination, Growth, Photosynthesis, and Ion Accumulation in Wild Miscanthus sinensis Anderss. Populations

2014

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The lignocellulosic crop Miscanthus spp. has been identified as a good candidate for biomass production. To satisfy the need for high yield and to avoid competition with food production by growing the crop in marginal areas, we studied the responses of M. sinensis to salinity. Effects of salt concentrations (0−360 mM NaCl) on seed germination, growth, photosynthesis, and shoot ion accumulation were examined. In the germination test of 17 accessions, high salt concentration inhibited seed germination in all accessions, while germination percentage varied significantly among the accessions. Two accessions showing variable salt tolerance, JM0119 (salt‐tolerant) and JM0099 (salt‐sensitive), were selected for a greenhouse study on plant dry weight, leaf chlorophyll content, total leaf area, tiller number, photosynthetic rate (A), stomatal conductance (gs), photosystem‐II (PSII) operating efficiency (∆F/F´m), and shoot ion concentration during various lengths of time. The experiment was performed twice, but for most parameters, no significant differences between runs were observed. Salinity resulted in a reduction of plant growth. Photosynthetic rate and gs were adversely affected by all salt treatment levels, while ∆F/F´m was not reduced until salt concentrations reached 120 mM NaCl. In contrast to the increases of shoot Na+ and Cl− concentrations, shoot K+ concentration declined in the presence of salt. Overall, this study revealed a great variability for salt tolerance in M. sinensis germplasm. The relative advantage of JM0119 over JM0099 under saline conditions was primarily associated with larger leaf area, a greater number of tillers, greater photosynthetic capacity, and restricted Na+ accumulation in shoots.

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“…Palm trees has many environmental and economic benefits like; Photosynthesis, Prevents erosion, Palm oil, Palm kernel oil, Cooking, Construction, Livestock feeding. All this environmental and the economic importance, minimum information are available based on the photosynthesis of the oil palm Dufrene [7]; Ibrahim et al [8]; Jaafar, [9]; Wahid et al [10], MPOC,2012. This little information has not properly been explored with the early studies of oil palm growth characteristic Corley [11,12].…”

Section: Fall/burning Processmentioning

confidence: 99%

Assessment of Traditional Palm Wine Tapping Practice Effect on Vegetation in Nasarawa State, Nigeria

Ekpo

Ozim

Oladeinde

2019

IJECC

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Palm wine is an alcoholic drink obtained by the natural fermentation of the sap of various type of palm trees, it produced and consumed in various part of the country and beyond. This rich beverage is been used for different traditional practices not only for occasional consumption, so it is of high demand product. The tapping process starts from traditional dealers known as Palm Wine Tappers, that climbs to the top most part of the palm trees, cut it open from the side or middle, or cut down the tree for the liquid sap and this produces lactic-alcoholic-acetic fermentation that is conducted by the lactic acid bacteria (LAB), yeast and acetic acid bacteria (AAB). The tapping process practiced in difference part of the country are; burning/falling, pruning and trimming. They poses a threat to palm trees that serves other environmental, economic, health and nutritional benefits to human and the ecosystem. This practice renders high number of palm trees less productive or dead in a society with no food security, shaky economy, poor environmental practice/awareness and tree planting habit. Due to high demand for the product, 4 out of 10 palm trees are been converted to palm wine production source, this implies that the palm tree can not produce palm fruit that is more of high economic benefits and also contributes to the shortage of palm tree lifespan that serves as a good absorbent of carbon and gives out oxygen through photosynthesis process, a measure that adds value to living organism and reduces warming of the environment. This study recommends proper public awareness especially to the people involve in the trade “Palm Wine Tappers” and introduction of more sustainable way of tapping, monitoring and emphasis on tree planting.

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Photosynthesis and Quantum Yield of Oil Palm Seedlings to Elevated Carbon Dioxide

Cited by 11 publications

References 61 publications

The impact of elevated CO<sub>2</sub> and water deficit stress on growth and photosynthesis of juvenile cacao (Theobroma cacao L.).

The impact of elevated CO<sub>2</sub> and water deficit stress on growth and photosynthesis of juvenile cacao (Theobroma cacao L.).

Salinity Effects on Germination, Growth, Photosynthesis, and Ion Accumulation in Wild Miscanthus sinensis Anderss. Populations

Assessment of Traditional Palm Wine Tapping Practice Effect on Vegetation in Nasarawa State, Nigeria

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