scholarly journals Postproduction Carbohydrate Levels in Pot Chrysanthemums

1991 ◽  
Vol 116 (6) ◽  
pp. 1013-1018 ◽  
Author(s):  
Susan E. Trusty ◽  
William B. Miller
Keyword(s):  
Reducing Sugars ◽  
Sucrose Concentration ◽  
Dry Weight ◽  
Soluble Carbohydrates ◽  
Fresh Weight ◽  
Plant Parts ◽  
Color Changes ◽  
Carbohydrate Levels ◽  
Reserve Carbohydrate

Postproduction changes in carbohydrate types and quantities in the leaves, stems, and inflorescences of pot chyrsanthemums [Dendranthema × gramfiflorum (Ramat.) Kitamura `Favor'] placed in interior conditions were investigated. Fructans, sucrose, glucose, and fructose were present in all plant parts. In inflorescences and leaves, an additional unidentified substance was present. All plant parts decreased in dry weight during the postproduction evaluation. This decrease was accompanied by overall reductions in total soluble carbohydrates (TSC) and starch. The appearance of leaves and stems was acceptable throughout the experiment. Leaves lost significant amounts of TSC during the first 4 days postproduction (DPP), due primarily to a 76% decrease in sucrose concentration. After 4 DPP, leaf and stem TSC remained relatively unchanged. In inflorescences, petal expansion continued through 12 DPP. Visible signs of senescence, including loss of turgor, color changes, and inrolling of petal edges were observed at 20 DPP, and by 28 DPP, the plants were determined unacceptable for consumer use. Inflorescences increased in fresh weight, but not dry weight, during petal expansion, then each decreased. Inflorescence TSC fell from 146 mg.g-1 dry weight at O DPP to 11 mg.g-1 at 28 DPP. Reducing sugars accounted for 84% of the inflorescence TSC at 4 DPP, dropping to 48% at 28 DPP. Fructan concentration decreased through 16 DPP and then remained unchanged, while starch levels rose from 25 to 34 mg·g -1 dry weight through 12 DPP, then decreased. Fractans decreased in polymerization during petal expansion. This result suggests an alternate use of fructans and starch as pools of available reserve carbohydrate during petal expansion in chrysanthemum.

INVESTIGATIONS ON RUBBER-BEARING PLANTS: II. CARBOHYDRATES IN THE ROOTS OF TARAXACUM KOK-SAGHYZ ROD.

1946 ◽  
Vol 24c (2) ◽  
pp. 47-53 ◽  
Author(s):  
Paul R. Gorham
Keyword(s):  
Reducing Sugars ◽  
Analytical Data ◽  
Dry Weight ◽  
Hot Water ◽  
Soluble Carbohydrates ◽  
Mild Acid Hydrolysis ◽  
Rubber Bearing ◽  
One Year ◽  
Mild Acid

The soluble carbohydrates were extracted, by means of hot water, from dried ground roots of Taraxacum kok-saghyz Rod. that had been extracted previously with acetone and benzene. A cleared portion of the extract served for the determination of hexose and, after invertase hydrolysis, sucrose. Another portion was subjected to mild acid hydrolysis before clearing, and served for the determination of total reducing value, whence fructosans, as inulin, were calculated. Separation of the free reducing sugars and sucrose from the fructosans by ethanol extraction proved unsatisfactory. Analyses of 171 one-year old roots from six crosses gave the following average values expressed as per cent dry weight: hexose 1.6, sucrose 4.7, and inulin 41. The analytical data suggest the possibility of selecting and breeding for strains of kok-saghyz capable of high carbohydrate production.

scholarly journals (295) Relationship Between Macromolecule and Metal Ion Accumulation in Two Salt-stressed Cultivars of Sweetpotato under In Vitro Conditions

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1079A-1079
Author(s):  
Devi Prasad V. Potluri
Keyword(s):  
Salt Stress ◽  
Metal Ion ◽  
Ipomoea Batatas ◽  
Dry Weight ◽  
Soluble Carbohydrates ◽  
Soluble Carbohydrate ◽  
Shoot Height ◽  
Sodium Accumulation ◽  
Carbohydrate Levels

Two cultivars of sweetpotato [Ipomoea batatas (L.) Lam.], Commensal and Salyboro, were subjected to salt stress using axillary bud cultures. The salt levels ranged from 0–150 mM. After 10 weeks of growth, plantlet shoot height, dry weight, number of nodes, levels of proline, soluble carbohydrate, and protein; and metal ions sodium, potassium, magnesium, and calcium, were measured. In both cultivars, proline accumulation was higher in the shoot. There was a positive correlation between the increase in soluble carbohydrates and proteins in `Commnesal', but not in `Salyboro'. More sodium accumulated in the shoots of `Salyboro' compared to `Commensal'. The accumulation of sodium reduced the calcium and potassium, but not magnesium levels. Increase in sodium levels correlated with the increase in soluble carbohydrate levels is `Salyboro', but not in `Commensal'. A similar trend was evident with praline and sodium accumulation. Based on these and previous results, the cultivar `Salyboro' appears to be more susceptible to salt stress.

ALLELOPATHIC INFLUENCE OF POPPY (Papaver somniferum L.) ON EMERGENCE AND INITIAL SEEDLING GROWTH OF RED RICE (Oryza punctata L.)

2020 ◽  
Vol 27 (2) ◽  
pp. 381-392
Author(s):  
Bilal Ahmad Khan ◽  
Muhammad Ather Nadeem ◽  
Sadia Afzal ◽  
Sadia Afzal ◽  
Muhammad Azim Khan ◽  
...  
Keyword(s):  
Aqueous Extract ◽  
Seedling Growth ◽  
Root Length ◽  
Dry Weight ◽  
Papaver Somniferum ◽  
Shoot Length ◽  
Red Rice ◽  
Fresh Weight ◽  
Plant Parts ◽  
Oryza Punctata

Allelopathy plays crucial role in effective weed control. Opium (Papaver somniferum L.) crop release different allelochemicals at maturity which have potential to act as natural weeds control in different crops. Phytotoxic effect of Papaver somniferum was examined on germination and initial seedling growth of red rice (Oryza punctata L.). Aqueous extract of different plant parts (leaves, stem and flower) were used at various concentrations (0.25%, 0.5%, 1%, 2%, 4% and 8%) along with distilled water as control. The aqueous extracts of leaves, stem and flower of P. somniferum were significantly inhibited the emergence, seedling growth as well as root length (cm), shoot length (cm), fresh weight (g) and dry weight (g) of O. punctata. Maximum mean emergence time (9.18 days) and minimum shoot length (1.13 cm) whereas minimum emergence index (0.89) and emergence percentage (6.67%) was observed under fruit extract at 8% concentration. P. somniferum aqueous extract of stem at 8% concentration take maximum time to complete 50% emergence minimum root length, fresh weight, dry weight of O. punctata. Based on this finding it can be concluded that the phyto-chemicals present in P. somniferum at 8% concentration may cause losses to the related as well as succeeding weeds through allelopathy and must be removed from the field to avoid destructive effects of these weeds.

The growth and reserpine content of callus culture of Rauvolfia verticillata on the variation of sucrose concentration in MS medium

2007 ◽  
Vol 5 (1) ◽  
pp. 38-46
Author(s):  
IRMAWATI IRMAWATI ◽  
SOLICHATUN SOLICHATUN ◽  
ENDANG ANGGARWULAN
Keyword(s):  
Callus Culture ◽  
Quantitative Data ◽  
Sucrose Concentration ◽  
Culture Method ◽  
Dry Weight ◽  
Ms Medium ◽  
Fresh Weight ◽  
Significance Level ◽  
Randomized Design ◽  
Two Stages

Irmawati, Solichatun, Anggarwulan E. 2007. The growth and reserpine content of callus culture of Rauvolfia verticillata on the variation of sucrose concentration in MS medium. Biofarmasi 5: 38-46. The aim of this research was to study the effect of the variation of sucrose concentration on the growth and reserpine content on callus culture of Rauvolfia verticillata (Lour.) Baillon. The research was conducted with callus culture method consisted of two stages. The first stage was callus initiation to induce callus from leaf explant of R. verticillata, and the second stage was the reserpine production on treatment medium. This research used a Completely Randomized Design (CRD) by one factor, i.e. the variation of sucrose concentration. The sucrose concentration consisted of five levels, i.e. 0 g/L, 10 g/L, 20 g/L, 30 g/L and 40 g/L, each concentration in five replicates. The collected data consisted of qualitative and quantitative data. The qualitative data, callus morphology, was presented descriptively. The quantitative data, included fresh weight callus, dry weight callus and reserpine content, were analyzed by using ANOVA and followed by DMRT at 5% significance level. The result of research showed that the variation of sucrose concentration influenced fresh weight callus, dry weight callus and reserpine content. The increasing of sucrose concentration tended to raise callus growth, which could be seen from the fresh and dry weight callus. The highest fresh weight callus was found in medium with sucrose concentration of 20 g/L, while the highest dry weight callus was found in medium with sucrose concentration of 40 g/L. The increasing of sucrose concentration until 30 g/L raised reserpine content, but the sucrose concentration over 30 g/L decreased the reserpine content.

Growth and Sugar Accumulation of Sugarcane. II. Dry Weight Increments and Estimates of Assimilation Rate

1977 ◽  
Vol 13 (1) ◽  
pp. 61-69 ◽  
Author(s):  
Donald MacColl
Keyword(s):  
Leaf Blade ◽  
Dry Matter ◽  
Reducing Sugars ◽  
Dry Weight ◽  
Area Ratio ◽  
Sugar Accumulation ◽  
Assimilation Rate ◽  
Fresh Weight ◽  
Matter Production ◽  
Net Assimilation

SUMMARYIncrements of fibre, sucrose and reducing sugars per cane were estimated for 12 varieties of sugarcane for successive periods in plant and ratoon crops. Sucrose production increased only as that of fibre and reducing sugars fell. Dry matter production per unit fresh weight of leaf blade was negatively correlated with an estimate of gram days of leaf per gram fresh weight of cane. In a further study the net assimilation rate of one variety was found to remain fairly constant over a period of six months at 0·55g/dm2/week. It is suggested that breeding should seek to reduce leaf area ratio while maintaining sucrose percentage cane.

The effect of plant population density on carbohydrate partitioning and nitrogen fixation of two bean (Phaseolus vulgaris L.) cultivars in two tropical locations

1983 ◽  
Vol 100 (1) ◽  
pp. 153-158 ◽  
Author(s):  
L. Waters ◽  
P. H. Graham ◽  
P. J. Breen ◽  
H. J. Mack ◽  
J. C. Rosas
Keyword(s):  
Population Density ◽  
Growth Period ◽  
Plant Population ◽  
Soluble Carbohydrates ◽  
Mountainous Area ◽  
Fresh Weight ◽  
Fixation Rate ◽  
Plant Parts ◽  
Carbohydrate Concentration ◽  
Plant Population Density

SUMMARYBean cultivars Cargamanto (CIAT P590, indeterminate climbing, Type IV) and Puebla 152 (CIAT P498, indeterminate large vine, Type III) were grown at 20 and 60plants/m2 at two locations in Colombia; a cool, high rainfall, mountainous area (Popayan) and a hot, medium rainfall, valley (Palmira). The crop growth period was compressed and P590 failed to flower at Palmira.where plant shoot weights tended to be higher and root weights lower than at Popayan.Midday soil temperatures at 10 cm averaged 7·8 °C lower and N2(C2H2) fixation rate and nodule fresh weight over ten-fold higher at Popayan than at Palmira. Increasing the plant population density increased yield but reduced seed weight per plant and the fresh weight of all other plant parts, with shoots more severely affected than roots. Density had little effect on carbohydrate concentration or N2(C2H2) fixation per plant. The cultivars accumulated carbohydrates in different amounts but had similar rates of N2(C2H2) fixation. Concentrations of ethanol insoluble carbohydrates were several times higher in all plant parts at Popayan. Soluble carbohydrates showed similar, but smaller, differences.

scholarly journals Starch Synthesis and Changes in Uridine Diphosphorlase in the Developing Wheat Grain

1969 ◽  
Vol 22 (6) ◽  
pp. 1321 ◽  
Author(s):  
JF Turner
Keyword(s):  
Reducing Sugars ◽  
Starch Synthesis ◽  
Dry Weight ◽  
Soluble Nitrogen ◽  
Wheat Grain ◽  
Fresh Weight ◽  
Sharp Rise ◽  
Protein Nitrogen ◽  
Starch Formation ◽  
Main Substrate

The enzymes UDPG pyrophosphorylase and ADPG pyrophosphorylase were assayed during the growth of wheat grains. Changes in fresh weight, dry weight, water, sucrose, reducing sugars, starch, total nitrogen, protein nitrogen, and soluble nitrogen were followed simultaneously. Throughout development the activity of UDPG pyrophosphorylase per grain was much greater than the activity of ADPG pyrophosphorylase. Both enzymes increased in activity during the phase of starch synthesis and a sharp rise in ADPG pyrophosphorylase was associated with the onset of rapid starch formation. ADPG pyrophosphorylase activity decreased to a very low level when starch formation in the grain ceased. UDPG pyrophosphorylase activity also decreased at this time. Although the participation of UDPG is not excluded, it is suggested that the main substrate for starch synthesis in the wheat grain is ADPG. A mechanism for the synthesis of starch from sucrose is proposed.

scholarly journals Brassinosteroid phytochormones as regulators of plant growth and modulators of pesticide and fertilizer activity

2018 ◽  
Vol 33 (3-4) ◽  
pp. 161-174
Author(s):  
Bogdan Nikolic ◽  
Hadi Waisi ◽  
Vladan Jovanovic ◽  
Vesna Dragicevic ◽  
Sanja Djurovic
Keyword(s):  
Fruits And Vegetables ◽  
Chemical Elements ◽  
Dry Weight ◽  
Reduced Form ◽  
Agricultural Crop ◽  
Fresh Weight ◽  
Chl A ◽  
Plant Parts ◽  
Crop Resistance ◽  
Differential Enthalpy

The mode of action of agrochemicals on plants implies the totality of their effect on plant metabolism, growth and development. The effects of different doses of 24-epibrassinolide (24-EBL) as a class of brassinosteroid phytohormones on growth and other physiological processes in maize plants during different development stages are reviewed in order to assess the influence of these agrochemicals on various factors determining the yield of maize as an important agricultural crop. In addition, several examples are given of the effects of these phytohormones on other crops, fruits and vegetables, in terms of their effect on yield, yield quality, and increase in crop resistance to some types of stress. Own results are discussed in the context of other literature data. Abbreviations: 24-EBL: 24-epibrassinolide; BRs: brassinosteroids; PCZ: propiconazole; Chl a: chlorophyl a; RFW (g g-1): relative fresh weight of different organs (R: radicle; P: plumule; RoS: rest of seed); TDW, TFW (g): total dry and fresh weight of plants; V root (ml): root volume; LMR, RMR, SMR (g g-1): relative dry weight of plant parts (leaves, roots, stem); dH (J mol-1 K-1): differential enthalpy of different parts (R: radicle; P: plumule; RoS: rest of seed) of 25 maize seedlings exposed to T(reatments) of different molar concentrations of 24-EBL; ?G105 (J mol-1 K-1) differential Gibbs free energy of total maize plant and their parts (R: roots; L: leaves; S: stem) assesed at 105 0C; ZP434, ZP704, ZP505: maize hybrids; Fv/Fm, , Fv/F0, ??S2, qP, NPQ, RFD730 (all in relative units), ETR (?mol electrons m-2 s-1): different Chl a fluorescence parameters; Pphy, Pi: phosphorus bond to phytic acid and free phosphorus available to many cellular biochemical reactions; GSH: reduced form of gluthathyone; K, Ca, Fe, Mg, Zn, Si: different chemical elements.

Effect of Molybdenum on Cauliflower (Brassica oleracea L. Var Botrytis) in Sand Nutrient Culture

1976 ◽  
Vol 12 (2) ◽  
pp. 195-199
Author(s):  
K. P. Singh ◽  
C. B. S. Rajput
Keyword(s):  
Ascorbic Acid ◽  
Vitamin C ◽  
Response Curve ◽  
Reducing Sugars ◽  
Dry Weight ◽  
Stem Length ◽  
Fresh Weight ◽  
Nutrient Culture ◽  
Quadratic Response ◽  
Brassica Oleracea L

SUMMARYOne ppm molybdenum produced the greatest height, fresh and dry weight per plant; number, fresh and dry weight of leaves; diameter, length, fresh and dry weight of stem; length, fresh and dry weight of roots; yield and yield-attributing characters (height, diameter, fresh and dry weight of curd), and N content of component parts of cauliflower plants (curd, leaf, stem and root). The lowest values for these characters were obtained in the control (nil Mo). Reducing and non-reducing sugars and vitamin C (ascorbic acid) were favourably enhanced (0·5 ppm Mo). The lowest values for sugars and ascorbic acid were observed under 1·0 ppm and nil Mo respectively. The quadratic response curve was drawn in terms of fresh weight of curd and rates of molybdenum application.

scholarly journals Effect of Different Strenght of Medium on Germination and Seedling Growth of Tomato and Sucrose Effect on Biomass of Tomato Callus

Jurnal Biota ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 12-18
Author(s):  
Arkan Setiaji
Keyword(s):  
Seedling Growth ◽  
Plant Cell Culture ◽  
Sucrose Concentration ◽  
Dry Weight ◽  
Ms Medium ◽  
Fresh Weight ◽  
Cytoprotective Activity ◽  
Callus Production ◽  
Sucrose Effect ◽  
Nutraceutical Products

Bioactive compounds of plant cell culture extracts are currently being looked at for its potential for the development of nutraceutical products. Tomato callus is known to have cytoprotective activity. The availability for explants and its callus production are two important things. This paper reports the effect of different strengths of medium on seed germination and seedling growth of tomato cv. Permata and sucrose effects on their biomass callus. Seeds were grown on 4 kind of germination media. Hypocotyl were taken as explants for callus induction in MS medium supplemented by 2.0 mg/l BA and 0.2 mg/l NAA, 3% sucrose, and subcultured after 20 days on medium with 6 variations of sucrose. The highest values ​​for tomato hypocotyl’s height were obtained from the ½ and ¼ MS, while the highest fresh weight was obtained from the MS 0. Both the fresh weight and dry weight of the callus increased along with increasing sucrose concentration. The explant age and biomass need to be a concern regarding what kind of callus that will be produced.  Application of 5% sucrose concentration is recommended for callus production in this study.

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