Variations in photosynthetic rate and associated parameters with age of oil palm leaves under irrigation

Suresh, K.; Nagamani, C.

doi:10.1007/s11099-006-0023-8

Cited by 16 publications

(13 citation statements)

References 5 publications

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“…While the mid morning P N /g s was higher in September, late winter, compared to the other months, P N /C i remained at a similar level throughout the year, in accordance to the stomatal limitation discussed by Flexas et al (2001). Positive correlations between P N and g s were found also in oil palms (Smith 1989, 1993, Suresh and Nagamani 2006, and in coconut (Repellin et al 1997). Peach palms showed predawn F v /F m values around 0.8 (Fig.…”

Section: Discussionsupporting

confidence: 77%

“…In comparison with other palms of economic importance, such as coconut palm (Gomes et al 2002a, 2002b, Gomes et al 2007, Passos et al 2009) and oil palm (Corley 1983, Dufrêne and Saugier 1993, Lamade and Setiyo 1996, Suresh and Nagamani 2006, photosynthesis of the peach palm has been less studied, even under the natural Amazonian conditions. A low P N of peach palm was reported in Willis et al (1992), however neither experimental conditions, nor the ontogeny of the leaves was documented.…”

Section: Introductionmentioning

confidence: 99%

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Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Tucci¹,

Erismann²,

Machado³

et al. 2010

Photosynt.

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The Amazonian peach palm (Bactris gasipaes Kunth) has been grown for heart-of-palm production under subtropical conditions. As we did not see any substantial study on its photosynthesis under Amazonian or subtropical conditions, we carried out an investigation on the diurnal and seasonal variations in photosynthesis of peach palms until the first heartof-palm harvest, considering their relationship with key environmental factors. Spineless peach palms were grown in 80-L plastic pots, under irrigation. Gas exchange and chlorophyll fluorescence emission measurements were taken in late winter, mid spring, mid summer and early autumn, from 7:00 to 18:00 h, with an additional chlorophyll fluorescence measurement at 6:00 h. The highest net CO 2 assimilation (P N ), observed in mid summer, reached about 15 μmol m -2 s -1 , which was about 20% higher than the maximum values found in autumn and spring, and 60% higher than that in winter The same pattern of diurnal course for P N was observed in all seasons, showing higher values from 8:00 to 9:00 h and declining gradually from 11:00 h toward late afternoon. The diurnal course of stomatal conductance (g s ) followed the same pattern of P N , with the highest value of 0.6 mol m -2 s -1 being observed in February and the lowest one (0.23 mol m -2 s -1 ) in September. The maximal quantum yield of photosystem II (F v /F m ) was above 0.75 in the early morning in all the months. The reversible decrease was observed around midday in September and October, suggesting the occurrence of dynamic photoinhibition. A significant negative correlation between the leaf-air vapour pressure difference (VPD leaf-air ) and P N and a positive correlation between P N and g s were observed. The photosynthesis of peach palm was likely modulated mainly by the stomatal control that was quite sensible to atmospheric environmental conditions. Under subtropical conditions, air temperature (T air ) and VPD leaf-air impose more significant effects over P N of peach palm than an excessive photosynthetic photon flux density (PPFD). The occurrence of dynamic photoinhibition indicates that under irrigation, peach palms appeared to be acclimated to the full-sunlight conditions under which they have been grown.

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Section: Discussionsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Tucci¹,

Erismann²,

Machado³

et al. 2010

Photosynt.

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“…Further, it is also expected that palms might have not responded either to the methods or levels of irrigation imposed with particular reference to total carotenoids content. Suresh and Nagamani (2006) also reported similar kind of trend in the total carotenoids conetent of adult oil palms. Upadhyay (2016) also reported similar kind of observation in the areca nut seedlings.…”

Section: Resultssupporting

confidence: 58%

Influence of Different Methods and Levels of Irrigation on Photosynthetic Pigments in Relation to Yield of Oil Palm (Elaeis guineensis Jacq.)

Rao¹,

Rao²,

Bhaskar³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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“…2 Many authors 1,35-37 have reported a decrease in the photosynthetic rate of the oil palm canopy after rank 9 but the leaves remained photosynthetically active even when located in the lower part of the canopy. 25,[35][36][37] The faster decrease in the stomatal conductance, after rank 1, than in photosynthesis, 1 could indicate a rapid control of g s by feedback of the photosynthates produced. Only a smooth peak of g s could be observed around rank 10 in relation to photosynthesis.…”

Section: C-depleted From Rank 2 To Pruningmentioning

confidence: 99%

Changes in ¹³C/¹²C of oil palm leaves to understand carbon use during their passage from heterotrophy to autotrophy

Lamade

Setiyo

Girard

et al. 2009

Rapid Comm Mass Spectrometry

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The carbon isotope composition of leaf bulk organic matter was determined on the tropical tree Elaeis guineensis Jacq. (oil palm) in North Sumatra (Indonesia) to get a better understanding of the changes in carbon metabolism during the passage from heterotrophy to autotrophy of the leaves. Leaf soluble sugar (sucrose, glucose and fructose) contents, stomatal conductance and dark respiration, as well as leaf chlorophyll and nitrogen contents, were also investigated. Different growing stages were sampled from leaf rank -6 to rank 57. The mean values for the delta(13)C of bulk organic matter were -29.01 +/- 0.9 per thousand for the leaflets during the autotrophic stage, -27.87 +/- 1.08 per thousand for the petioles and -28.17 +/- 1.09 per thousand for the rachises, which are in the range of expected values for a C(3) plant. The differences in delta(13)C among leaf ranks clearly revealed the changes in the origin of the carbon source used for leaf growth. Leaves were (13)C-enriched at ranks below zero (around -27 per thousand). During this period, the 'spear' leaves were completely heterotrophic and reserves from storage organs were mobilised for the growth of these young emerging leaves. (13)C-depletion was then observed when the leaf was expanding at rank 1, and there was a continuous decrease during the progressive passage from heterotrophy until reaching full autotrophy. Thereafter, the delta(13)C remained more or less constant at around -29.5 per thousand. Changes in sugar content and in delta(13)C related to leaf ranks showed an interesting similarity of the passage from heterotrophy to autotrophy of oil palm leaves to the budburst of some temperate trees or seed germination reported in the literature.

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Variations in photosynthetic rate and associated parameters with age of oil palm leaves under irrigation

Cited by 16 publications

References 5 publications

Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Influence of Different Methods and Levels of Irrigation on Photosynthetic Pigments in Relation to Yield of Oil Palm (Elaeis guineensis Jacq.)

Changes in ¹³C/¹²C of oil palm leaves to understand carbon use during their passage from heterotrophy to autotrophy

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Variations in photosynthetic rate and associated parameters with age of oil palm leaves under irrigation

Cited by 16 publications

References 5 publications

Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Influence of Different Methods and Levels of Irrigation on Photosynthetic Pigments in Relation to Yield of Oil Palm (Elaeis guineensis Jacq.)

Changes in 13C/12C of oil palm leaves to understand carbon use during their passage from heterotrophy to autotrophy

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Changes in ¹³C/¹²C of oil palm leaves to understand carbon use during their passage from heterotrophy to autotrophy