Photosynthetic limitations in leaves of young Brazilian Green Dwarf coconut (Cocos nucifera L. ‘nana’) palm under well-watered conditions or recovering from drought stress

Gomes, Fábio Pinto; Oliva, Marco Antônio; Mielke, Marcelo Schramm; Almeida, Alex-Alan Furtado de; Leite, Hélio Garcia; Aquino, Leonardo Ângelo de

doi:10.1016/j.envexpbot.2007.08.006

Cited by 85 publications

(66 citation statements)

References 48 publications

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“…In oil palm, the photosynthetic ability dropped significantly under PEGinduced osmotic stress (Cha-um et al, 2010b) and the degree of the degradation of photosynthetic pigments and the CO 2 assimilation rate under severe osmotic stress were closely correlated with diminution of F v /F m and reduction of Φ PSII and P n . In addition, P n in coconut cultivars, Una and Jiqui were reduced by 37.28% and 43.09%, respectively, under water deficit stress (Gomes et al, 2008), to limit the CO 2 assimilation through the stomatal apertures (Cornic, 2000). In the present study, the toxic symptoms in oil palm seedlings grown under PEG-induced osmotic stress were greater than those under mannitol-induced iso-osmotic stress.…”

Section: Growth Performancementioning

confidence: 43%

“…However, in olive plants the C x+c level has been reported to decrease by osmotic stress (Ahmed et al, 2009;Guerfel et al, 2009), while it was maintained in coconut (Gomes et al, 2008). C x+c plays an important role in protection against photo-oxidative damage, as represented by low NPQ (Müller et al, 2001;Omasa and Takayama, 2003).…”

Section: Growth Performancementioning

confidence: 99%

“…The physio-biochemical responses of oil palm seedlings under either mannitol or PEG-induced isoosmotic stress have not been reported previously. In the Arecaceae family, ecophysiological expression in coconut palms, including membrane lipid composition (Repellin et al, 1997), photosynthetic ability and growth performance under water deficit stress, using PEG solution, has been investigated (Gomes and Prado, 2007;Gomes et al, 2008). Also, we have investigated the physio-biochemical responses of oil palm seedlings grown under PEG-induced water deficit (Cha-um et al, 2010b).…”

mentioning

confidence: 99%

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Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Cha–um

Takabe

Kirdmanee

2012

Plant Production Science

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Section: Growth Performancementioning

confidence: 43%

Section: Growth Performancementioning

confidence: 99%

mentioning

confidence: 99%

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Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Cha–um

Takabe

Kirdmanee

2012

Plant Production Science

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“…Differences in resistance to drought are known to exist within genotypes of plant species and were found in many studies, e.g. in maize (Martinielio & Lorenzoni, 1985;Lorens et al, 1987;Grzesiak, 1990;Grzesiak et al, 2012), wheat (Winter et al, 1988;Reynolds et al, 1998;Paknejad et al, 2007), rape seed (Richards & Thurling, 1978), oat (Larsson & Go'rny, 1988), coconut (Gomez et al, 2008) and triticale (Royo et al, 2000;Grzesiak et al, 2012). Unusual dry weather conditions adversely affect germination and seedling growth rates thus enhancing cell elongation sensitivity to damages induced under stressed conditions (Taylor et al, 1982;Delachiave & Pinho, 2003;Hamayun et al, 2010a).…”

Section: Introductionmentioning

confidence: 99%

Effects of Drought Stress on Seed Germination and Seedling Growth of Different Maize Varieties

Liu¹,

Li²,

Liu³

et al. 2015

JAS

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Maize is susceptible to drought stress, especially during germination. The experiment of seed germination and seedling growth of two maize varieties under different concentration of mannitol solution was carried out. Four mannitol concentrations were set: 0, 200, 400 and 600 mM, and the corresponding solution osmotic potential was: 0, -0.49, -0.99, and -1.49 Mpa. Results indicated that Zhengdan958 germinated more quickly and in greater numbers than Liansheng15. The germination rate, germination potential, shoot and root fresh weight, shoot and root length of two maize varieties both decreased under drought stress, but they decreased more in Liansheng15 than in Zhengdan958. However, the germination and vigor index of Zhengdan958 were obviously higher than that of Liansheng15 under the stress of 200, 400 and 600 mM mannitol. These results showed that the drought resistances of Zhengdan958 was higher than that of Liansheng15 by having more powerful root system and higher osmotic adjustment ability.

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“…Differences in tolerance to drought are known to exist within genotypes of plant species and were found in many studies, e.g. in maize (Martinielio and Lorenzoni 1985;Lorens et al 1987;Grzesiak 1990;Grzesiak et al 2012), wheat (Winter et al 1988;Reynolds et al 1998;Paknejad et al 2007), rape seed (Richards and Thurling 1978), oat (Larsson and Górny 1988), coconut (Gomez et al 2008) and triticale (Royo et al 2000;Grzesiak et al 2012). Methods of evaluating the degree of drought tolerance allow for a direct or indirect estimation of the various physiological, biochemical or morphological traits of the examined genotypes.…”

Section: Introductionmentioning

confidence: 99%

The relations between drought susceptibility index based on grain yield (DSIGY) and key physiological seedling traits in maize and triticale genotypes

et al. 2012

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The physiological reasons for the differences in sensitivity of C 3 and C 4 plant species to environmental stresses have not been thoroughly explained. In this study the effects of drought stress on the growth and selected physiological traits were examined in the seedlings of 13 single cross maize (C 4 plant) hybrids and 11 spring triticale (C 3 plant) breeding lines and varieties differing in drought sensitivity. For plants in the seedling stage the results demonstrated a genetic variation in dry matter accumulation of shoots and roots (DW S , DW R ), number (N) and length (L) of particular components (seminal, seminal adventitious, nodal) of the root system, membrane injury by soil drought (LI D ), osmotic and high temperature stress (LI OS , LI HT ), water potential (w), water loss (WL), grain germination in osmotic stress (FG, PI), and seedling survival (SS). Seedlings grown under moderate soil drought showed a decrease in dry matter of the top parts and roots and a decrease in the length of seminal, seminal adventitious and nodal roots in comparison to seedlings grown in control conditions. The observed harmful effects of drought stress were more distinct in drought sensitive genotypes. Used in this paper drought susceptibility indexes (DSI GY ) were calculated in other experiment by determining the changes in grain yield (GY) under two soil moisture levels (irrigated and drought). The variation of DSI GY for maize ranges from 0.381 to 0.650 and for triticale from 0.354 to 0.578. The correlations between DSI GY and laboratory tests (LI, FG, SS) confirmed that they are good indicators of drought tolerance in plants. The highest values of genetic variation were observed in LI, DW S , SS and WL and the lowest in the measurements of w FG, PI, L S , L SA and L N . The correlation coefficients between LI OS and LI HT tests were, in most of the considered cases, statistically significant, which indicates that in maize and triticale the mechanisms of membrane injury caused by simulated drought or high temperature are physiologically similar. It can be concluded that an approach to the breeding of maize and triticale for drought tolerance using these tests can be implemented on the basis of separate selection for each trait or for all of them simultaneously. In that case, it would be necessary to determine the importance of the trait in relation to growth phase, drought timing and level, as well as its associations with morphological traits contributing to drought tolerance. The obtained values of the correlation coefficient between laboratory tests suggest that the same physiological traits may be applied as selection criteria in drought tolerance of maize and triticale genotypes.

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Photosynthetic limitations in leaves of young Brazilian Green Dwarf coconut (Cocos nucifera L. ‘nana’) palm under well-watered conditions or recovering from drought stress

Cited by 85 publications

References 48 publications

Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Effects of Drought Stress on Seed Germination and Seedling Growth of Different Maize Varieties

The relations between drought susceptibility index based on grain yield (DSIGY) and key physiological seedling traits in maize and triticale genotypes

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