Growth, Photosynthesis and Pollen Performance in Saline Water Treated Olive Plants under High Temperature

Koubouris, Georgios; Tzortzakis, Nikolaos; Kourgialas, Nektarios N.; Darioti, Marina; Metzidakis, Ιoannis

doi:10.4081/pb.2015.6038

Cited by 26 publications

(7 citation statements)

References 22 publications

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“…In vitro pollen germination: In order to assess pollen performance of plants grown at various winter chilling regimes, pollen was collected from freshly opened flowers and subsequently incubated at room temperature (~ 25 °C) in the dark in a growth chamber (Kottermann 2770, D3162; Hanigsen, Germany) for 24 h before counting pollen germination and pollen tube length according to Koubouris et al (2015b). Throughout the experiment, pollen was cultured on a solid medium consisting of 0.8 % (m/v) agar, 15 % (m/v) sucrose, 1.64 mM boric acid, and 60 mg dm -3 tetracycline hydrochloride according to Koubouris et al (2009).…”

Section: Methodsmentioning

confidence: 99%

Effects of various winter chilling regimes on flowering quality indicatorsof Greek olive cultivars

Koubouris¹,

Limperaki²,

Darioti³

et al. 2019

Biol. plant.

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Aims of the present two-year study were to evaluate the feasibility and identify potential drawbacks of the greenhouse/ outdoors parallel plant growth methods for investigation of the effects of various winter chilling regimes on flowering quality indicators of four Greek olive cultivars, namely Mastoidis, Amfissis, and Lefkolia Serron (originating from mountainous and colder areas) compared to cv. Koroneiki (grown mainly in plain warm areas). Groups of potted olive plants were either grown outdoors under ambient temperature or transferred into a greenhouse for one, two, or three months during winter in Crete, Greece. During the first year, chilling accumulation deficit caused a marked decrease in the number of inflorescences per plant in all four olive cultivars. In the second year, chilling accumulation deficit had a negative effect on the number of inflorescences per plant in 'Mastoidis' at 3-month greenhouse treatment but not at all in 'Koroneiki'. Chilling deficit caused an overall decrease in the number of flowers per inflorescence in both 'Koroneiki' and 'Mastoidis' as well as in the percentage of morphologically perfect flowers. The width and length of inflorescences were not affected by chilling deficit in both the cultivars. In vitro pollen germination was reduced in all greenhouse treatments in 'Koroneiki'; however, this effect was significant only after 3 month, whereas no effect was observed in 'Mastoidis'. The results of the present study may contribute to understanding olive flowering biology and selecting appropriate cultivars for new plantations according to historical meteorological data and predicted climate change scenarios.

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Section: Methodsmentioning

confidence: 99%

Effects of various winter chilling regimes on flowering quality indicatorsof Greek olive cultivars

Koubouris¹,

Limperaki²,

Darioti³

et al. 2019

Biol. plant.

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“…The osmotic potential of salt-affected soils is low and when plants are grown in this soil, they must keep their internal osmotic potential low to avoid exosmosis. This, in turn, leads to oxidative stress and dehydration [45][46][47][48]. Salinity stress also causes nutrient imbalance, and nutrients such as N, Ca, K, and toxic ions replace P, Fe, Zn, and as a result, their uptake to shoot is decreased [49][50][51].…”

Section: Post-harvest Soil Characteristicsmentioning

confidence: 99%

Effect of Organic Amendments in Soil on Physiological and Biochemical Attributes of Vachellia nilotica and Dalbergia sissoo under Saline Stress

Yousaf

Nawaz

Yasin

et al. 2022

Plants

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Vachellia nilotica (L.) P.J.H. Hurther & Mabb. and Dalbergia sissoo Roxb. are two of the most important multipurpose agroforestry tree species of the Indian sub-continent, but their growth in saline soils is greatly reduced. Recently, organic amendments have showed the potential to increase plant growth in salt-affected soils; however, the influence of using these amendments for growing the above-mentioned tree species under saline conditions is not yet quantified. Therefore, an experiment was devised to analyze the interactive effects of organic amendments in saline soils on the growth of V. nilotica and D. sissoo. Under controlled conditions, a pot experiment was conducted in sandy loam saline soils (EC = 20.5 dSm−1). Organic amendments from four diverse sources: farmyard manure (FYM), poultry manure (PM), slurry (SL), and farmyard manure biochar (FYMB) were employed in this study. At the harvesting time, data regarding morphological, physiological, ionic, and biochemical parameters were obtained. The current study results indicated that both tree species reacted differently, but positively, to diverse applied amendments. The maximum increment in total above-ground biomass, total below-ground biomass, and shoot length for V. nilotica (163.8%, 116.3%, and 68.2%, respectively) was observed in FYM amended soils, while the maximum increment for D. sissoo (128%, 86%, and 107%, respectively) was observed in FYMB amended soils, as compared to control. Minimum plant growth of both species was observed in untreated soils (saline soils). Likewise, the maximum potassium ion and minimum sodium ion concentrations were present in the root and shoots of plants (both species) treated with FYMB. The use of organic amendments resulted in decreased concentrations of malondialdehyde and hydrogen peroxide, and increased concentrations of antioxidant enzymes such as SOD, POD, and CAT. Moreover, higher photosynthetic rates and stomatal conductance were observed in the plants grown in amended soils. The findings of this study can be used to include the above-mentioned high-value tree species for future afforestation programs under saline conditions.

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“…Some adaptability in salt tolerance may be expected depending on soil properties, types of rhizobacteria found there, phenological growth stage, and on agronomical practices including here the use of salt-resistant rootstocks [118,119]. Therefore, the investigation of soil improving cropping systems and the selection of salt-tolerant crops, salt-tolerant rootstocks, and symbiotic biological agents are currently considered to reduce the losses in yield under saline conditions [120][121][122].…”

Section: Salinity Tolerant Crops and Rootstocksmentioning

confidence: 99%

A Review of Soil-Improving Cropping Systems for Soil Salinization

et al. 2019

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A major challenge of the Sustainable Development Goals linked to Agriculture, Food Security, and Nutrition, under the current global crop production paradigm, is that increasing crop yields often have negative environmental impacts. It is therefore urgent to develop and adopt optimal soil-improving cropping systems (SICS) that can allow us to decouple these system parameters. Soil salinization is a major environmental hazard that limits agricultural potential and is closely linked to agricultural mismanagement and water resources overexploitation, especially in arid climates. Here we review literature seeking to ameliorate the negative effect of soil salinization on crop productivity and conduct a global meta-analysis of 128 paired soil quality and yield observations from 30 studies. In this regard, we compared the effectivity of different SICS that aim to cope with soil salinization across 11 countries, in order to reveal those that are the most promising. The analysis shows that besides case-specific optimization of irrigation and drainage management, combinations of soil amendments, conditioners, and residue management can contribute to significant reductions of soil salinity while significantly increasing crop yields. These results highlight that conservation agriculture can also achieve the higher yields required for upscaling and sustaining crop production.

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Growth, Photosynthesis and Pollen Performance in Saline Water Treated Olive Plants under High Temperature

Cited by 26 publications

References 22 publications

Effects of various winter chilling regimes on flowering quality indicatorsof Greek olive cultivars

Effects of various winter chilling regimes on flowering quality indicatorsof Greek olive cultivars

Effect of Organic Amendments in Soil on Physiological and Biochemical Attributes of Vachellia nilotica and Dalbergia sissoo under Saline Stress

A Review of Soil-Improving Cropping Systems for Soil Salinization

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