scholarly journals Effects of 5-Aminolevulinic Acid on Chlorophyll, Photosynthesis, Soluble Sugar and Flavonoids of Ginkgo biloba

2011 ◽  
Vol 39 (1) ◽  
pp. 41 ◽  
Author(s):  
Feng XU ◽  
Shuiyuan CHENG ◽  
Jun ZHU ◽  
Weiwei ZHANG ◽  
Yan WANG
Keyword(s):  
Plant Growth ◽  
Ginkgo Biloba ◽  
Aminolevulinic Acid ◽  
Foliar Application ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Total Polyphenols ◽  
Leaf Quality ◽  
Chl A

The flavonoid content determines the quality of Ginkgo biloba that can be increased by using of plant growth regulators. The objective of study was to observe the effect of 5-aminolevulinic acid (ALA), a key precursor in the biosynthesis of porphyrins and a new plant growth regulator, on photosynthetic rate, chlorophyll and soluble sugar content, flavonoid accumulation, and flavonoid enzyme activity in G. biloba leaves. The ginkgo seedlings were grown in greenhouse conditions under low levels (10 and 100 mg l-1) of foliar application of ALA. Photosynthetic rates of leaves increased significantly at day 4 in response to both ALA concentrations and remained elevated as compared to control for further 12 days. Chlorophyll and soluble sugar contents were significantly increased by day 4 and continued to increase by day 16; however, Chl a/b ratio remained unchanged. Total polyphenols, flavonoids, and anthocyanins, phenylalanine ammonia-lyase (PAL), chalcone synthase (CHS) and chalcone isomerase (CHI) activities were increased from day 4 to 16 after ALA treatment. The increase in chlorophyll and soluble sugar contents, and activities of flavonoid enzymes (PAL, CHS and CHI) were likely to be closely associated with improvement of the accumulation of total polyphenols, flavonoids, anthocyanins and advance of leaf quality by ALA treatment. Foliar treatment with a low concentration of ALA therefore, might provide a useful means of improving pharmacological properties of G. biloba leaves.

scholarly journals Effect of 5-Aminolevulinic Acid (ALA) on the Biochemical and Physiological Parameters of Postharvest Quality of Polygonatum multiflorum L. All. ‘Variegatum’ Cut Foliage

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1502
Author(s):  
Katarzyna Rubinowska ◽  
Elżbieta Pogroszewska ◽  
Paweł Szot
Keyword(s):  
Aminolevulinic Acid ◽  
Foliar Application ◽  
Postharvest Quality ◽  
Vase Life ◽  
Chl A ◽  
Plant Cultivation ◽  
Cut Foliage ◽  
Cut Leaves ◽  
Cultivation Site

Due to the dynamic development of the floriculture market, new species and varieties of plants that can potentially be used as a source of cut greenery are constantly being sought. The experiment was conducted to analyze the effect of the cultivation site (unheated foil tunnel and open field) and treatments with the Pentakeep V formulation (0.00%, 0.02%, 0.04%, and 0.06%) on the vase life and postharvest quality of Polygonatum multiflorum ‘Variegatum’ cut foliage. There was a positive effect of the cultivation in the unheated foil tunnel on the vase life and biochemical parameters, namely the electrolyte leakage (EL), thiobarbituric acid reactive substances (TBARS), chlorophyll a + b (Chl. a + b), proline, peroxidase (POD), and ascorbate peroxidase (APX), of P. multiflorum cut foliage. Foliar application of Pentakeep V formulation at concentrations of 0.04% and 0.06% contributed to a decrease in the TBARS content in the P. multiflorum cut leaves, regardless of the plant cultivation site. Additionally, it reduced proline production in cut leaves of P. multiflorum cultivated in the unheated foil tunnel, which was confirmed by the analyses carried out after the 30 days of the experiment. Furthermore, the exogenous application of ALA during P. multiflorum cultivation inhibited POD activity, irrespective of its concentration and the site of plant cultivation.

scholarly journals Daytime, Not Nighttime, Elevated Atmospheric Carbon Dioxide Exposure Improves Plant Growth and Leaf Quality of Mulberry (Morus alba L.) Seedlings

2021 ◽  
Vol 11 ◽  
Author(s):  
Songmei Shi ◽  
Yuling Qiu ◽  
Miao Wen ◽  
Xiao Xu ◽  
Xingshui Dong ◽  
...  
Keyword(s):  
Plant Growth ◽  
Atmospheric Carbon Dioxide ◽  
Plant Biomass ◽  
Soluble Sugar ◽  
Morus Alba ◽  
Mineral Nutrient ◽  
Leaf Quality ◽  
Leaf Yield ◽  
The Impact

Almost all elevated atmospheric CO2 concentrations (eCO2) studies have not addressed the potential responses of plant growth to different CO2 in daytime and nighttime. The present study was to determine the impact of daytime and/or nighttime eCO2 on growth and quality of mulberry (Morus alba L.), a perennial multipurpose cash plant. Six-month-old mulberry seedlings were hence grown in environmentally auto-controlled growth chambers under four CO2 concentrations: (1) ambient CO2 (ACO2, 410 μmol mol–1 daytime/460 μmol mol–1 nighttime), (2) sole daytime elevated CO2 (DeCO2, 710 μmol mol–1/460 μmol mol–1), (3) sole nighttime elevated CO2 (NeCO2, 410 μmol mol–1/760 μmol mol–1), and (4) continuous daytime and nighttime elevated CO2 (D + NeCO2, 710 μmol mol–1/760 μmol mol–1). Plant growth characteristics, nutrient uptake, and leaf quality were then examined after 120 days of CO2 exposure. Compared to control, DeCO2 and (D + N)eCO2 increased plant biomass production and thus the harvest of nutrients and accumulation of leaf carbohydrates (starch, soluble sugar, and fatty acid) and N-containing compounds (free amino acid and protein), though there were some decreases in the concentration of leaf N, P, Mg, Fe, and Zn. NeCO2 had no significant effects on leaf yield but an extent positive effect on leaf nutritional quality due to their concentration increase in leaf B, Cu, starch, and soluble sugar. Meanwhile, (D + N)eCO2 decreased mulberry leaf yield and harvest of nutritious compounds for silkworm when compared with DeCO2. The reason may be associated to N, P, Mg, Fe, and Zn that are closely related to leaf pigment and N metabolism. Therefore, the rational application of mineral nutrient (especially N, P, Fe, Mg, and Zn) fertilizers is important for a sustainable mulberry production under future atmosphere CO2 concentrations.

scholarly journals Grape yield and quality of the grapevine cultivar limberger treated with plant growth regulators

2004 ◽  
Vol 49 (2) ◽  
pp. 141-147
Author(s):  
Slavica Todic
Keyword(s):  
Plant Growth ◽  
Gibberellic Acid ◽  
Growth Regulators ◽  
Shoot Growth ◽  
Foliar Application ◽  
Sugar Content ◽  
Grapevine Cultivar ◽  
Yield And Quality ◽  
Grape Yield

The effects of foliar application of paclobutrasol (PK), chlorcholinechloride (CC) and gibberellic acid (GA3) on grape yield and quality of the grapevine cultivar Limberger were studied. PK and CC strongly inhibited shoot growth. The number of berries per bunch, bunch weight and grape yield per m2 were increased. At the same time, sugar content of must was either reduced (CC2000) or retained at the level of control (PK1000, CC1000). The GA150 treatment resulted in lower grape yield. At the concentration of GA3 100mg/l no significant increase in yield was found, whilst sugar content of must was significantly increased.

scholarly journals Enhancing the Quality of Two Species of Baby Leaves Sprayed with Moringa Leaf Extract as Biostimulant

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1399
Author(s):  
Stefania Toscano ◽  
Antonio Ferrante ◽  
Ferdinando Branca ◽  
Daniela Romano
Keyword(s):  
Leaf Extract ◽  
Foliar Application ◽  
Sugar Content ◽  
Nitrate Content ◽  
Specific Response ◽  
Yield And Quality ◽  
Negative Effect ◽  
Species Specific ◽  
Moringa Oleifera Lam

Natural biostimulants obtained by plants are intensively used nowadays to improve crop yield and quality. The current study aimed to evaluate the effects of leaf extract of moringa (Moringa oleifera Lam.) (MLE) in modifying baby leaf characteristics of two genotypes of Brassica. The trial was started in October 2020 in a greenhouse; a cultivar of kale ‘Cavolo Laciniato Nero di Toscana’ (CL) and a Sicilian landrace of sprouting broccoli ‘Broccoli Nero’ (BN) were used. The plants, after 15, 30 and 40 days from sowing, were treated with MLE, while the control plants (C) with distilled water. Treatment with MLE modified morphological and nutritional value, but with different behavior in the two genotypes. In fact, in BN the treatment reduced the antioxidant activity (2.2-diphenyl-1-picrylhydrazyl (DPPH)) by 54%, while in CL the treatment increased this parameter by 40%. For the phenolic concentration and the sugar content the values recorded were significantly increased by MLE compared to control plants in CL, where in BN a significant reduction was registered. The CL plants treated with MLE showed a significant reduction (−70%) in nitrate content compared to the control plants; a negative effect was, instead, observed in BN, where the plants treated with moringa showed an increase of 60%. Results of this study showed how the foliar application of MLE was effective in improving various nutraceutical parameters, in particular in kale, because it appears to be a species-specific response.

scholarly journals FOLIAR APPLICATIONS OF ZINC, IRON AND MANGANESE INFLUENCE THE PLANT GROWTH AND FRUIT QUALITY OF PAPAYA CV. RED LADY

2020 ◽  
Vol 8 (5) ◽  
pp. 551-557
Author(s):  
Gurjot Singh Pelia ◽  
◽  
A K Baswal ◽  
Keyword(s):  
Plant Growth ◽  
Fruit Quality ◽  
Foliar Application ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Total Carotenoids ◽  
Heavy Soil

Prevalence of heavy soil is a major problem for fruit cultivation under Punjab conditions consequently leading to deficiency of several micro-nutrients including zinc (Zn), iron (Fe), and manganese (Mn) which adversely affects the growth and productivity. In this view, a study was planned to investigate the effect of foliar applications of zinc sulphate (ZnSO4), iron sulphate (FeSO4), and manganese sulphate (MnSO4) on vegetative growth, reproductive growth and fruit quality of papaya cv. Red lady. Plants sprayed with ZnSO4 (0.4 %) exhibited significantly highest plant height, plant girth, number of leaves, petiole length; initiated an earliest flowering and fruiting; and improved fruit quality viz., fruit weight, fruit length, titratable acidity, soluble solids concentrations, ascorbic acid content, total phenols content, and total carotenoids content as compared with the control and all other treatments. In conclusion, foliar application ZnSO4 (0.4 %) significantly improved plant growth and fruit quality in papaya cv. Red lady.

scholarly journals Exogenous Melatonin Modulates the Physiological and Biochemical Mechanisms of Drought Tolerance in Tartary Buckwheat (Fagopyrum tataricum (L.) Gaertn)

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2828
Author(s):  
Md. Shakhawat Hossain ◽  
Jing Li ◽  
Ashim Sikdar ◽  
Mirza Hasanuzzaman ◽  
Ferdinand Uzizerimana ◽  
...  
Keyword(s):  
Drought Stress ◽  
Plant Growth ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Growth And Yield ◽  
Tartary Buckwheat ◽  
Arid Zones ◽  
Enzymatic Antioxidants ◽  
Fagopyrum Tataricum ◽  
Exogenous Melatonin

Tartary buckwheat is one of the nutritious minor cereals and is grown in high-cold mountainous areas of arid and semi-arid zones where drought is a common phenomenon, potentially reducing the growth and yield. Melatonin, which is an amphiphilic low molecular weight compound, has been proven to exert significant effects in plants, under abiotic stresses, but its role in the Tartary buckwheat under drought stress remains unexplored. We evaluated the influence of melatonin supplementation on plant morphology and different physiological activities, to enhance tolerance to posed drought stress by scavenging reactive oxygen species (ROS) and alleviating lipid peroxidation. Drought stress decreased the plant growth and biomass production compared to the control. Drought also decreased Chl a, b, and the Fv/Fm ratio by 54%, 70%, and 8%, respectively, which was associated with the disorganized stomatal properties. Under drought stress, H2O2, O2•−, and malondialdehyde (MDA) contents increased by 2.30, 2.43, and 2.22-folds, respectively, which caused oxidative stress. In contrast, proline and soluble sugar content were increased by 84% and 39%, respectively. However, exogenous melatonin (100 µM) could improve plant growth by preventing ROS-induced oxidative damage by increasing photosynthesis, enzymatic antioxidants (superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase), secondary metabolites like phenylalanine ammonialyase, phenolics, and flavonoids, total antioxidant scavenging (free radical DPPH scavenging), and maintaining relative water content and osmoregulation substances under water stress. Therefore, our study suggested that exogenous melatonin could accelerate drought resistance by enhancing photosynthesis and antioxidant defense in Tartary buckwheat plants.

scholarly journals Pre-Harvest Foliar Application of Mineral Nutrients to Retard Chlorophyll Degradation and Preserve Bio-Active Compounds in Broccoli

Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 711
Author(s):  
Mohamed M. El-Mogy ◽  
Mohamed Abdel M. Wahab ◽  
Mohamed B. I. El-Sawy ◽  
Aditya Parmar
Keyword(s):  
Plant Growth ◽  
Shelf Life ◽  
Foliar Application ◽  
Growth Parameters ◽  
Management Practice ◽  
Nutrient Content ◽  
Mineral Nutrients ◽  
Postharvest Quality ◽  
Total Phenolic

Foliar application of micronutrients has become a common farm management practice to increase the overall yield of various crops. However, the effects of foliar fertilization on shelf life and postharvest quality of the crops are rather under-researched. The aim of this field experiment was to evaluate the effect of foliar application of individual mineral nutrients (calcium (Ca), zinc (Zn), manganese (Mn), and iron (Fe) on pre and postharvest quality of broccoli. The broccoli plants were subjected to single foliar sprays of either Ca, Fe, Zn, or Mn, which was repeated four times during plant growth at a 1 g/kg concentration. Once harvested, the broccoli heads were refrigerated at 4 °C for 28 days. Our results indicated that foliar application of Ca, Zn, Mn, and Fe did not have a significant effect on plant growth parameters, apart from enhancing Soil Plant Analysis Development (SPAD) chlorophyll meter values. However, during postharvest, foliar application treatment showed a positive response on weight loss during storage and reduction in yellowing of the broccoli heads. Foliar treatments increased the concentration of Nitrogen (N), Phosphorus (P), Ca, Zn, Mn and Fe significantly in the broccoli head tissue. Total chlorophyll content, total phenolic compound, ascorbic acid, peroxidase activity, glucoraphanin and glucobrassicin and flavonoids were significantly increased by all foliar treatments. Crude protein content and sulforaphane were enhanced by Ca and Mn treatments. Overall, foliar application of the investigated mineral nutrients may prove beneficial in improving the shelf-life and nutrient content of broccoli during postharvest handling and storage.

scholarly journals Effect of N, P, K, and Mg application on yield and fruit Quality of mandarin (Citrus reticulata)

2013 ◽  
Vol 38 (3) ◽  
pp. 425-433
Author(s):  
Shamima Nasreen ◽  
R Ahmed ◽  
MA Ullah ◽  
MA Hoque
Keyword(s):  
Fruit Quality ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Fruit Yield ◽  
Gross Margin ◽  
Marginal Rate ◽  
Piedmont Plain ◽  
Yield Attributes ◽  
Total Soluble Sugar

The study was carried out at the farmer's field of Juri Upazilla, Maulavibazar District during 2008-2009, 2009-2010, and 2011-2012 to find out the proper combination of fertilizer nutrients that promotes better fruit yield and quality of mandarin (cv. Khashi Kamla). The treatments were Native nutrient i.e., control (TI), N150P50K150Mg30 (T2), N200P75K175Mg40 (T3), N250P100 K200Mg50 (T4), N300P125K225Mg60 (T5), and N200P75K175Mg0 (T6) g/plant/year. In addition, 20 kg cowdung/plant was used as blanket dose. Yield components, yield, and TSS content (%) of mandarin varied significantly due to variation of nutrients in all the test years. Fruit yield/plant was improved significantly with increase in NPK and Mg dose irrespective of years. Application of Mg in combination with NPK increased 17-157% mean fruit yield over magnesium control. Significantly the highest yield and yield attributes were recorded under treatment N300 P125 K225 Mg60 g/plant (T5) along with 20 kg cowdung/plant in all the years. Total soluble sugar (%) content was also maximum in trees receiving N300P125K225Mg30 g/plant. The highest gross margin and marginal rate of return were achieved by the same treatment (T5). The lowest fruit yield/plant was obtained from untreated control plot (native nutrient). Three years’ study revealed that application of N300P125K225Mg60 along with 20 kg cowdung/plant would be economically optimum for achieving higher yield and better fruit quality in mandarin grown under piedmont plain soil. DOI: http://dx.doi.org/10.3329/bjar.v38i3.16969 Bangladesh J. Agril. Res. 38(3): 425-433, September 2013

scholarly journals Postharvest quality of red gerberas depending on the storage temperature

2016 ◽  
Vol 46 (11) ◽  
pp. 1945-1951 ◽  
Author(s):  
Ana Carolina Corrêa Muniz ◽  
Vanessa Cury Galati ◽  
Kelly Magalhães Marques ◽  
Claudia Fabrino Machado Mattiuz ◽  
Ben-Hur Mattiuz
Keyword(s):  
Storage Temperature ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Postharvest Quality ◽  
Vase Life ◽  
Randomized Design ◽  
Two Factors ◽  
Relative Water ◽  
Loss Of Mass

ABSTRACT: This study aimed to verify the best storage temperature in the postharvest quality conservation of inflorescences of gerberas cv. 'Intenza'. Inflorescences were kept in distilled water and stored at the temperatures of 22ºC (control); 12ºC; 8ºC and 4ºC. The experiment was conducted in a completely randomized design in split plot with two factors: 4 treatments (temperatures) X 4 evaluation dates (0, 3, 6 and 9 days). It was used three replicates, with three inflorescences each. It were evaluated the variation of fresh mass, relative water content, soluble and reducing sugars content and longevity. Results were submitted to analysis of variance and means compared by Tukey test at 5% of probability. The inflorescences of gerbera maintained at 4ºC, 8ºC and 12ºC showed a greater postharvest life compared with the inflorescences of the control, highlighting those kept at 4ºC which presented less loss of mass and higher soluble sugar content; thus, maintaining the quality of gerberas for a longer period, with vase life of approximately 15 days.

scholarly journals Iodine Biofortification of Potato (Solanum tuberosum L.) Grown in Field

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1916
Author(s):  
Iwona Ledwożyw-Smoleń ◽  
Sylwester Smoleń ◽  
Stanisław Rożek ◽  
Włodzimierz Sady ◽  
Piotr Strzetelski
Keyword(s):  
Dry Matter ◽  
Foliar Application ◽  
Solanum Tuberosum L ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Iodine Content ◽  
Matter Content ◽  
Dry Matter Content ◽  
Potato Tubers ◽  
Daily Diet

Despite wide prevention programmes, iodine deficiency remains a substantial problem in various populations around the world. Consumption of crop plants with increased iodine content may help supply additional amounts of that element in a daily diet. The aim of the work was to evaluate the efficiency of iodine biofortification of potato tubers. Soil application of KI and foliar application of KIO3 in doses up to 2.0 kg I ha−1 were tested in a three-year field experiment. Biomass, yield as well as dry matter, iodine, starch, and soluble sugar content in potato tubers were analyzed. No negative effect of tested methods of iodine application on potato yield or dry matter content was observed. Both soil and foliar application of iodine allowed to obtain potato tubers with increased content of that element with no decrease of starch or sugar content. The highest efficiency of iodine biofortification was noted for foliar spraying with KIO3 in a dose of 2.0 kg I ha−1. The obtained level of iodine in 100 g of potatoes could be sufficient to cover up to 25% of Recommended Daily Allowance for that element. The findings of the study indicate that potatoes biofortified with iodine can become an additional source of I in a daily diet.

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