scholarly journals 6-Benzylamino purine outperforms Kinetin and Thidiazuron in ameliorating flower longevity in Calendula officinalis L. by orchestrating physiological and biochemical responses

2021 ◽  
Vol 27 (2) ◽  
pp. 183-195
Author(s):  
Mohammad Lateef Lone ◽  
Sumira Farooq ◽  
Aehsan ul haq ◽  
Shazia Parveen ◽  
Inayatullah Tahir
Keyword(s):  
Amino Acid Content ◽  
Stability Index ◽  
Flower Longevity ◽  
Membrane Stability Index ◽  
Calendula Officinalis ◽  
Total Sugars ◽  
Biochemical Responses ◽  
Postharvest Life ◽  
Calendula Officinalis L ◽  
Physiological And Biochemical

Abstract In view of extending the relatively brief postharvest life of flowers by a range of technologies, the present study elucidates the implication of 6-benzylamino purine (BAP), kinetin (KN) and thidiazuron (TDZ) on postharvest performance and flower longevity of isolated flowers of Calendula officinalis. BAP and KN belong to adenine group cytokinins while as TDZ is a diphenyl urea compound having cytokinin like activity. The harvested flowers were supplemented with BAP, KN and TDZ at various concentrations viz., 25, 50, 75 and 100 µM at one day before anthesis (cup shaped) stage. The control was designated by a distinct set of flowers held in distilled water (DW). Our findings revealed substantial enhancement in flower longevity by application of various growth regulators as compared to the control. Vase solutions containing BAP and KN at 50 µM and TDZ at 75 µM (individually) were most effective in improving the longevity of cut Calendula flowers. Improvement in flower longevity was primarily associated with high membrane stability index (MSI), upregulated activities of various antioxidant enzymes viz., catalase (CAT), superoxide dismutase (SOD) and ascorbate peroxidase (APX), besides an attenuated lipoxygenase (LOX) activity in the petals. As compared to control, the treated flowers exhibited higher values of soluble proteins, total phenols and total sugars, besides lower α-amino acid content in the petal tissues. However, BAP outplayed TDZ and KN in improving the flower longevity of Calendula officinalis by maintaining higher physiological and biochemical stability in petals.

scholarly journals Effect of Ethylene Antagonist Silver Thiosulphate on the Flower Longevity of Clarkia pulchella Pursh.

2018 ◽  
Vol 26 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Riyaz Ahmad Dar ◽  
Inayatullah Tahir
Keyword(s):  
Antioxidant Enzymes ◽  
Stability Index ◽  
Dry Mass ◽  
Control Group ◽  
Total Phenols ◽  
Flower Longevity ◽  
Membrane Stability Index ◽  
Silver Thiosulphate ◽  
Ethylene Antagonist ◽  
Clarkia Pulchella

Abstract An experiment was conducted to study the effect of different concentrations of silver thiosulphate (STS) on flower longevity of Clarkia pulchella Pursh. The buds were subjected to 0.1, 0.25, 0.5, 0.75 and 1 mM of STS for 1 h pulse treatment. A separate set of flowers kept in distilled water was designated the control group. STS treatment resulted in improved flower longevity besides maintaining higher fresh and dry mass, water content and floral diameter. Conversely, total phenols, lipid peroxidation and lipoxygenase (LOX) activity decreased. The flowers treated with STS showed a significant increase in the activity of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX). Amongst various grades used, 0.5 mM STS was found to be most effective in enhancing the flower longevity by 1.5 days. The present study reveals that STS maintains lower LOX activity, thereby increased membrane stability index by improving the activity of antioxidant enzymes.

Changes In Phytochemical Traits Of Calendula Officinalis L. In Response To Bio-Stimulants Application

Planta Medica ◽  
2016 ◽  
Vol 82 (05) ◽  
Author(s):  
H Rafiee ◽  
H Naghdi Badi ◽  
A Mehrafarin ◽  
M Taghi Khosravi ◽  
M Tamjidi
Keyword(s):  
Calendula Officinalis ◽  
Calendula Officinalis L

Oddziaływanie napropamidu na wybrane właściwości antyoksydacyjne koszyczków nagietka lekarskiego (Calendula officinalis L.)

2018 ◽  
Vol 72 (4) ◽  
pp. 37-46
Author(s):  
Arkadiusz Telesiński ◽  
Mirosław Onyszko ◽  
Martyna Śnioszek ◽  
Maciej Płatkowski ◽  
Michał Stręk
Keyword(s):  
Calendula Officinalis ◽  
Calendula Officinalis L

ETHIDIUM BROMIDE INFLUENCE ON PHOTOSYNTHETIC PIGMENTS CONTENT IN Calendula officinalis L. LEAF

2012 ◽  
Vol 11 (9) ◽  
pp. 1721-1724
Author(s):  
Roxana Vatavu ◽  
Constantin Leonte ◽  
Teodor Robu. ◽  
Catalina Slabu-Pascal
Keyword(s):  
Ethidium Bromide ◽  
Photosynthetic Pigments ◽  
Calendula Officinalis ◽  
Calendula Officinalis L

Physiological and biochemical responses of harvested rambutan (Nephelium lappaceum L.) fruits to postharvest dip treatments during storage

2018 ◽  
Vol 19 (1&2) ◽  
pp. 217-222
Author(s):  
Manjunath J. Shetty ◽  
◽  
P.R. Geethalekshmi ◽  
C. Mini ◽  
Vijayaraghava Kumar ◽  
...  
Keyword(s):  
Biochemical Responses ◽  
Nephelium Lappaceum ◽  
Physiological And Biochemical

Morphological, Physiological and Biochemical Responses of Poplar Plants to Drought Stress

2018 ◽  
Vol 5 (03) ◽  
Author(s):  
ARADHNA KUMARI ◽  
IM KHAN ◽  
ANIL KUMAR SINGH ◽  
SANTOSH KUMAR SINGH
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Biochemical Parameters ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Field Capacity ◽  
Drought Event ◽  
Total Biomass ◽  
Biochemical Responses ◽  
Physiological And Biochemical

Poplar clone Kranti was selected to assess the morphological, physiological and biochemical responses under drought at different levels of water stress, as it is a common clone used to be grown in Uttarakhand for making paper and plywood. The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity) and changes in physiological and biochemical parameters related with drought tolerance were recorded. Alterations in physiological (i.e. decrease in relative water content) and biochemical parameters (i.e. increase in proline and soluble sugar content and build-up of malondialdehyde by-products) occurred in all the three levels of water stress, although drought represented the major determinant. Drought treatments (75%, 50% and 25% FC) decreased plant height, radial stem diameter, harvest index, total biomass content and RWC in all the three watering regimes compared to control (100% FC). Biochemical parameters like proline, soluble sugar and MDA content increased with severity and duration of stress, which helped plants to survive under severe stress. It was analyzed that for better wood yield poplar seedlings should avail either optimum amount of water (amount nearly equal to field capacity of soil) or maximum withdrawal up to 75% of field capacity up to seedling establishment period (60 days). Furthermore, this study manifested that acclimation to drought stress is related with the rapidity, severity, and duration of the drought event of the poplar species.

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