Response of Plant growth regulators on leaf photosynthetic pigments of pot marigold

2016 ◽  
Vol 2 (2) ◽  
pp. 109-113
Author(s):  
Seyedeh Fatemeh Moosavi Sardoo
Keyword(s):  
Chlorophyll A ◽  
Photosynthetic Pigments ◽  
Foliar Application ◽  
Mean Value ◽  
Control Treatment ◽  
Chlorophyll B ◽  
Total Pigment ◽  
Randomized Design ◽  
Pot Marigold ◽  
Calendula Officinalis L

Effect of gibberellic acidon marigold (Calendula Officinalis L.) was evaluated in a pot culture experiment. A factorial experiment based on completely randomized design including 12 treatments and four replications was carried out. Main factor was foliar application stages (first, second and third) and sub factor included different concentrations of GA3(0, 50, 150 and 250 mg L-1). Results showed that foliar application of GA3had positive effect on photosynthetic pigments. Effect of different concentrations of GA3on chlorophyll a was significant (p<0.01). Chlorophyll a content was enhanced by increase in GA3concentration up to 250 mg L-1 treatment of 250mg L-1 resulted in production of 7.78­µg/L-1chlorophyll a, the index which was to some extent dropped in other concentrations. Different concentrations of GA3 had significant effect on chlorophyll b (p<0.01). Chlorophyll b was increased by increase in GA3concentration up to 250mgL-1. the highest rate of total chlorophyll content and total pigment in three times of application and one application of 250 mg L-1 was 14.6 and 15.4 µg/L-1 respectively; whereas the lowest chlorophyll and pigment content was observed in one foliar application of control treatment with mean value as 4.67 and 5.5 µg/L-1.

scholarly journals Pemanfaatan Pupuk Organik Kulit Pisang Dan Azolla Terhadap Pertumbuhan Kangkung Darat Dengan Sistem Akuaponik

2019 ◽  
Vol 12 (01) ◽  
pp. 1-10
Author(s):  
Maria Sastriana ◽  
Ngadiani Ngadiani
Keyword(s):  
Chlorophyll Content ◽  
Chlorophyll A ◽  
Organic Fertilizer ◽  
Control Treatment ◽  
Banana Peel ◽  
Chlorophyll B ◽  
Total Chlorophyll ◽  
Azolla Pinnata ◽  
Randomized Design ◽  
Weight Test

The aim of this study was to compare the organic fertilizer of azolla pinnata and banana peel and a combination of azolla pinnata and banana peel with the same concentration of 800 ppm to the weight of harvest and the chlorophyll content of ground spinach (Ipomoea reptans Poir.). The experiment was carried out experimentally using a completely randomized design with control treatment, 800 ppm azolla pinnata, 800 ppm banana skin and a combination of azolla pinnata and banana peels 800 ppm which were repeated 6 times each. The application was carried out by pouring 800 ppm of azolla pinnata, 800 ppm of banana peel and a combination of azolla pinnata and 800 ppm banana peel on each gutter. The results showed that azolla pinnata and banana peel nutrition had a significant effect (P <0.05) on harvest weight and chlorophyll content of ground spinach plants (Ipomoea reptans Poir.). Nutrition azolla pinnata and banana peel with a concentration of 800 ppm can increase the weight of the land spinach (Ipomoea reptans Poir.) Which has the highest average. In testing the chlorophyll content, the results of chlorophyll a content, chlorophyll b content and the highest total chlorophyll content was found in azolla pinnata 800 ppm nutrition. The results of this study concluded that 800 ppm azolla pinnata, 800 ppm banana peel and 800 ppm combination of azolla pinnata and banana peel in the growth of ground spinach plants (Ipomoea reptans Poir.) Were effective to increase harvest weight and increase chlorophyll content of land spinach (Ipomoea reptans Poir.) Namely chlorophyll a, chlorophyll b and total chlorophyll of land spinach plants (Ipomoea reptans Poir.).   Keywords: ground kale, azolla pinnata, banana peel, harvest weight, test of chlorophyll content, chlorophyll a, chlorophyll b, total chlorophyll.

scholarly journals Interactive Effects of Brassinosteroids and Timber Waste Biochar Enhances the Drought Tolerance Capacity of Wheat Plant

2021 ◽  
Author(s):  
Irfana Lalarukh ◽  
Zunaira Naeem ◽  
Nida Mansoora ◽  
Syeda Amjad Amjad ◽  
Shams Abdel-Hafez ◽  
...  
Keyword(s):  
Drought Stress ◽  
Photosynthetic Pigments ◽  
Foliar Application ◽  
Growth Parameters ◽  
Wheat Plant ◽  
Interactive Effects ◽  
Control Treatment ◽  
Enzymatic Antioxidants ◽  
Stress Indicators ◽  
Randomized Design

Abstract Drought stress is among the major constraints that threat agricultural productivity within the arid and semi-arid regions, worldwide. In this study, wheat (a strategic crop) was selected to test its growth under drought stress and the mechanisms beyond this adaptation while considering two factors, i.e., (1) deficit irrigation at 35% of the water holding capacity (WHC) versus 75% of WHC (Factor A) and (2) the following safe treatments: the control treatment (C), amending soil with biochar (BC) at a rate of 2%, foliar application of 24-epibrassinolide at two different levels (1 (BR1) or 3 (BR2) μmol) and the combination between BC and BR treatments. The obtained results were statistically analyzed, and the heat-map conceits between measured variables were also calculated by using the Python software. This investigation took place under the greenhouse conditions for 35 days following a complete randomized design and all treatments were replicated trice. Results obtained herein revealed that drought stress decreased all studied vegetative growth parameters (root and shoot biomasses) and photosynthetic pigments (chlorophyll a, b and total contents while increased oxidative stress indicators. All additives, specifically the combined ones BR1+BC and BR2+BC, were effective in increasing growth attributes, photosynthetic pigments and ion assimilation by wheat plants. They also upraised the levels of enzymatic and non-enzymatic antioxidants while decreased stress indicators. Furthermore, they increased Ca, P and K content within plants. It can therefore be deduced that the integral application of BR and BC is essential to mitigate drought stress in plants.

scholarly journals Effect of fertilizers on concentration of photosynthetic pigments in juvenile seedlings of Eastern black walnut (Juglans nigra L.)

2015 ◽  
pp. 19-26
Author(s):  
Vladan Popović ◽  
Tatjana Ćirković-Mitrović ◽  
Ljubinko Rakonjac ◽  
Aleksandar Lučić
Keyword(s):  
Chlorophyll A ◽  
Photosynthetic Pigments ◽  
Control Sample ◽  
Mean Value ◽  
Black Walnut ◽  
Juglans Nigra ◽  
Chlorophyll B ◽  
Set Up ◽  
In The Beginning ◽  
Eastern Black Walnut

The paper presents the results of the effect of different fertilizers on concentration of photosynthetic pigments in leaves of juvenile seedlings of Eastern black walnut (Juglans nigra L.). The seedlings were produced in 2014 in the seedling nursery of Institute of forestry in Belgrade. The trial was set up in a random block system with three types of fertilizers and a control in three replications. Three types of pigments have been examined: chlorophyll a, chlorophyll b and carotenoids. The leaf sampling was carried out in the beginning of June 2014. The highest concentration of photosynthetic pigments was found in the leaves of seedlings treated with the preparation Osmocote® Exact Standard 5-6 M and the lowest in the seedlings which were not treated. The highest mean value had chlorophyll a (0.522mg/g) in treatment with Osmocote® Exact Standard 5-6 M and the lowest mean value had chlorophyll b (0.213mg/g) in the control sample. The results showed that the concentration of photosynthetic pigments in leaves of Eastern black walnut juvenile seedlings varied depending on the fertilizer that was applied. Based on the obtained results it can be concluded that the proper fertilizer can increase the concentration of photosynthetic pigments in leaves and therefore the intensity of photosynthesis which contributes to increasing the biomass production.

scholarly journals Variations of Chlorophyll Content at Abies alba and Nepeta pannonica Species According to Phenophase and Harvesting Area

2019 ◽  
Vol 52 (1) ◽  
pp. 74-78
Author(s):  
S. Buhăianu ◽  
Doina Carmen Jităreanu
Keyword(s):  
Chlorophyll Content ◽  
Chlorophyll A ◽  
Photosynthetic Pigments ◽  
Photosynthetic Activity ◽  
Abies Alba ◽  
Chlorophyll B ◽  
Green Color ◽  
Yellow Coloration ◽  
Chlorophyll A And B ◽  
Chlorophyll A Content

Abstract Chlorophylls from plants are photosynthetic pigments. Their quantity offers valuable informations about photosynthetic activity, growing and developing of plants. Photosynthetic pigments decrease quantitatively during senescence process or in stress conditions. The present study has been realized in laboratory conditions with material harvested from spontaneous flora. The purpose of this research was the investigation of variations of chlorophyll content from samples of biological material collected from Nepeta pannonica L. and Abies alba Mill. plants, from Câmpulung Moldovenesc and Cacica areas, Suceava county, Romania. The targeted phenophases were growth and flowering. There were realized acetonic extracts from samples for spectrophotometric determinations. Obtained data were processed to estabilish chlorophyll a and b content. There were observed that at Abies alba species, from both locations, the chlorophyll a content grew during flowering phenophase, while the chlorophyll b content had little variations. At Nepeta pannonica species, the chlorophyll a and b content decreased visibly during the flowering, due to stress. Leaves of plants from this species presented a intense green color in the growing phenophase, while during flowering phenophase they had a purple or yellow coloration. Obtained results revealed a different dynamics of chlorophyll content at studied species.

scholarly journals Impact of Moroccan Crocus sativus L. tepals, corms, and stigmas extract on growth and photosynthetic pigments in tomato seedling

2021 ◽  
Vol 35 (2) ◽  
Author(s):  
Amine Khoulati ◽  
E. Saalaoui
Keyword(s):  
Chlorophyll A ◽  
Foliar Application ◽  
Positive Impact ◽  
Crocus Sativus ◽  
Carotenoid Content ◽  
Chlorophyll B ◽  
Tomato Seedling ◽  
Tomato Plants ◽  
By Products ◽  
Crocus Sativus L

An experiment was carried out in a greenhouse to study the effect of aqueous extracts of Crocus sativus L. by-products on tomato plants. Three concentrations of tepals and corms were used by fertigation: 1 g/L, 2 g/L, and 3 g/L. The aqueous extract of the stigmas was used as a foliar application at 0.6 g/L. The experiment was carried out in a completely randomized block with three repetitions for each concentration. The concentration of tepal extract at 3 g/L significantly (p≤0.05) increased the plants' height, the chlorophyll a, b content. The same results were observed for the foliar treatment with stigmas; however, there was no effect of tepal extract on the carotenoid content. On the other hand, the concentration 2 g/L of the corms extract had a positive impact (p≤0.05) in the chlorophyll b content while the concentration of 3 g/L increased the plant's height, the chlorophyll a (p≤0.05). Current results indicate that Crocus sativus by-products could improve certain physiological aspects of the recipient plants and new and natural biostimulants.

Interactions between Photosynthetic Pigments Bound to Lipid and Protein Particles. Spectroscopic Properties

1979 ◽  
Vol 34 (7-8) ◽  
pp. 582-587
Author(s):  
Framçoise Techy ◽  
Monique Dinant ◽  
Jacques Aghion
Keyword(s):  
Chlorophyll A ◽  
Photosynthetic Pigments ◽  
Relative Concentration ◽  
Spectroscopic Properties ◽  
Chlorophyll B ◽  
Pheophytin A ◽  
Chlorophylls A And B ◽  
Protein Particles ◽  
Β Carotene

Abstract The spectroscopic (visible) properties of pigment-bearing lipid and protein particles extract­ ed from milk show that: 1) chlorophylls a and b bound to separate particles can form aggregates provided their relative concentration is high enough. Neither pheophytin a nor β-carotene, in the same conditions, form observable aggregates. 2) Chlorophylls a and b can co-aggregate when they are bound to the same particles. Pheophytin a as well as β-carotene seem to prevent the aggregation of chlorophyll a. β-carotene has no effect on the aggregation of chlorophyll b.

scholarly journals Influence of Seaweed (Padina antrillarum) Extract Foliar Application on Growth and Flowering of Roses Variety ‘Local’

2021 ◽  
Vol 9 (4) ◽  
pp. 235-241
Author(s):  
M.A.M.N. Kularathne ◽  
S. Srikrishnah ◽  
S. Sutharsan
Keyword(s):  
Sri Lanka ◽  
Management Practices ◽  
Plant Biomass ◽  
Foliar Application ◽  
Coastal Region ◽  
Seaweed Extract ◽  
Control Treatment ◽  
Liquid Extract ◽  
Randomized Design ◽  
Wide Range

The Seaweed (Padina antrillarum) abundantly found in the coastal region of Eastern Sri Lanka. Seaweed contains a wide range of nutrients and hormones for plant growth. An experiment was conducted at the Crop Farm, Eastern University, Sri Lanka to assess the effects of seaweed (Padina antrillarum) extract on the flowering of roses var. ‘Local’ from July to September 2020. Four treatments were used in this experiment viz. 10% (T1), 20% (T2), and 30% (T3) seaweed extracts with control treatment (T4). Treatments were applied at once-a-week interval. The experimental design was a completely randomized design with three replications. All other management practices were followed uniformly. Measurements were done at once a month. Collected data were analyzed. The higher performances in measured parameters (plant height, leaf area, plant biomass, number of flowers per plant) were observed in T2. It showed that once a week application of 20% seaweed liquid extract had the potential to increase growth and flower production in roses. It might be due to the presence of nutrients and the growth hormones in seaweed extract and optimum concentration of seaweed extract received by plants at T2. In T1 and T3, plants received sub-optimum and higher concentration respectively. It could be the reason for the lowest performances in these treatments. From this experiment, it could be concluded that once a week application of 20% seaweed liquid extract of Padina antrillarum is suitable to increase flowering in roses of treatment tested.  

scholarly journals Growth, photosynthetic pigments, and photochemical efficiency of sour passion fruit as a function of the cationic nature of water

2021 ◽  
Vol 42 (2) ◽  
pp. 583-598
Author(s):  
Francisco Jean da Silva Paiva ◽  
◽  
Geovani Soares de Lima ◽  
Vera Lúcia Antunes de Lima ◽  
Jailton Garcia Ramos ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Photosynthetic Pigments ◽  
Irrigation Water ◽  
Photochemical Efficiency ◽  
Passion Fruit ◽  
Control Treatment ◽  
Chlorophyll B ◽  
Academic Unit ◽  
Agricultural Engineering ◽  
Sour Passion Fruit

The objective of this study was to evaluate the growth, photosynthetic pigments, and photochemical efficiency of sour passion fruit cv. BRS Rubi do Cerrado irrigated with waters of different cationic natures. The experiment was carried out from March 2019 to January 2020 in a protected environment belonging to the Academic Unit of Agricultural Engineering of the Federal University of Campina Grande (UFCG), Campina Grande, PB, Brazil. The treatments consisted of eight combinations of irrigation water with different cationic natures: S1 - Control; S2 - Na+; S3 - Ca2+; S4 - Mg2+; S5 - Na+ + Ca2+; S6 - Na+ + Mg2+; S7 - Ca2+ + Mg2+, and S8 - Na+ + Ca2+ + Mg2+. Plants in the control treatment (S1) were irrigated using water with an electrical conductivity (ECw) of 0.4 dS m-1, while the other treatments (S2; S3; S4; S5; S6; S7; and S8) were subjected to an ECw of 3.5 dS m-1. Sour passion fruit growth was affected by variations in the level of electrical conductivity, regardless of the cationic nature of irrigation water. The use of salinized water with sodium favored the synthesis of chlorophyll a, chlorophyll b, and carotenoids of passion fruit plants at 180 days after transplanting. The distinct cationic natures of irrigation water did not influence the fluorescence variables of sour passion fruit.

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