scholarly journals Efficacy of Growth Regulators on Flowering of Gerbera (Gerbera jamesonii B.) cv. Goliath in Open Field Condition

2021 ◽  
Author(s):  
Bishnupada Giri ◽  
Sashikala Beura
Keyword(s):  
Amino Acid ◽  
Plant Growth ◽  
Open Field ◽  
Growth Regulators ◽  
Field Condition ◽  
Foliar Spray ◽  
Growth Promoters ◽  
Flower Bud ◽  
Flower Diameter ◽  
Open Field Condition

Background: Application of plant bioregulators at specific concentration modify growth, flowering, flower yield and post harvest quality of flowers. Growth promoters like auxin, gibberellins and cytokinin modify physiological process by accelerating plant growth while growth retardant like cycocel and abscisic acid inhibit plant growth. But in open field cultivation of gerbera, little is known about use of growth regulators on flowering regulation. A good knowledge on use of growth regulators in gerbera is required before going to any recommendations. The current study aimed to standardize suitable bioregulators on flower production in gerbera in open field condition. Methods: The study was carried out in premises of Biotechnology cum Tissue Culture Centre, Odisha University of Agriculture and Technology, Bhubaneswar during 2015-16 and 2016-17. Apart from control eight treatments of growth regulators were used like GA3 @ 100 ppm and 150 ppm, cycocel @ 700 ppm and 800 ppm with or without amino acids as foliar spray. The observation were recorded from 5 randomly selected plant within each replication of treatment for different floral parameters. Result: The result revealed that days taken to flower bud initiation and days taken to flowering was minimum in GA3 @ 100 ppm + amino acid. The stalk length of flower was maximum in treatment GA3 @ 150 ppm + amino acid while largest flower diameter, maximum number of flowers and longest bloom life was observed in treatment with cycocel @ 700 ppm + amino acid. Maximum stalk thickness was found in treatment with cycocel @ 800 ppm + amino acid. The present work will be a complementary contribution to the researchers and gerbera growers in increasing productivity of this flower crops.

scholarly journals Effect of Organic and Inorganic Sources of Nutrients on Flowering of Hybrid Gerbera (Gerbera jamesonii B.) cv. Shimmer in Open Field Condition

2021 ◽  
pp. 34-46
Author(s):  
Bishnupada Giri ◽  
Sashikala Beura
Keyword(s):  
Open Field ◽  
Field Condition ◽  
Foliar Spray ◽  
Gerbera Jamesonii ◽  
Flower Bud ◽  
Flower Stalk ◽  
Flower Yield ◽  
Flower Diameter ◽  
Bud Initiation ◽  
Open Field Condition

The present investigation on Effect of organic and inorganic sources of nutrients on flowering of hybrid gerbera (Gerbera jamesonii B.) cv. Shimmer in open field condition was conducted at Biotechnology cum Tissue Culture Centre, OUAT Bhubaneswar during 2015-16 and 2016-17. The aim of the study was to find out suitable organic and inorganic sources of nutrients for cut flower production of gerbera in open field condition. There were eight treatment combinations consisting of 100% recommended dose of fertilizer (RDF), Vermicompost, 75% RDF, PSB, Azospirillum, Azotobacter and foliar spray of macro and micro elements. Application of 75% RDF (15:10:30 g NPK/10 plants) + Vermicompost (25 g/10 plants) + Azospirillum/ Azotobacter (20 g/10 plants) + PSB (20 g/10 plants) + macro and micro element spray recorded earlier flower bud initiation and flowering. The same treatments conducted to maximum length of flower stalk, thickness of flower stalk, flower diameter, number of flowers/plant and bloom life. It can be concluded that reduced dose of chemical fertilizer (75% RDF) along with application of vermicompost and biofertiizer can improve flower yield of gerbera in open field condition.

scholarly journals Impact of Plant Growth Regulators on Post Harvest Life of Cut Flowers of Gerbera (Gerbera jamesonii.B) cv. Goliath

2021 ◽  
pp. 154-162
Author(s):  
Bishnupada Giri ◽  
Sashikala Beura
Keyword(s):  
Amino Acid ◽  
Growth Regulators ◽  
Winter Season ◽  
Foliar Spray ◽  
Vase Life ◽  
Cut Flowers ◽  
Flower Stalk ◽  
Post Harvest ◽  
Flower Diameter ◽  
Solution Uptake

The present investigation was carried out in premises of Biotechnology cum Tissue Culture Centre, Odisha University of Agriculture and Technology, Bhubaneswar during 2015-16 and 2016-17. The objective of the study was to standardize suitable bio regulators on post harvest life of gerbera cut flowers. Apart from control, eight treatments of growth regulators like Gibberellins (GA3) @ 100ppm and 150ppm; cycocel @ 700 ppm and 800 ppm with and without amino acid were used as foliar spray. In winter season percentage gain weight of flower stalk (19.95%), percentage gain in flower diameter (4.95%), solution uptake (33.17 ml) and vase life (13.83 days) were maximum with application of cycocel @ 700 ppm + Amino Acid while percentage gain in stalk length (1.28%) of flower in vase was maximum in Gibberellin @ 150ppm + Amino Acid. Similar trends in change in above post harvest parameters were also observed in summer and rainy season.

scholarly journals Relief Role of Lysine Chelated Zinc (Zn) on 6-Week-Old Maize Plants under Tannery Wastewater Irrigation Stress

2020 ◽  
Vol 17 (14) ◽  
pp. 5161
Author(s):  
Rehan Ahmad ◽  
Wajid Ishaque ◽  
Mumtaz Khan ◽  
Umair Ashraf ◽  
Muhammad Atif Riaz ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Plant Growth ◽  
Foliar Application ◽  
Antioxidant Activities ◽  
Foliar Spray ◽  
Tannery Wastewater ◽  
Organic Load ◽  
Maize Plants

Tannery wastewater mainly comes from leather industries. It has high organic load, high salinity, and many other pollutants, including chromium (Cr). Tannery wastewater is generally used for crop irrigation in some areas of Pakistan and worldwide, due to the low availability of good quality of irrigation water. As tannery wastewater has many nutrients in it, its lower concentration benefits the plant growth, but at a higher concentration, it damages the plants. Chromium in tannery wastewater accumulates in plants, and causes stress at physiological and biochemical levels. In recent times, the role of micronutrient-amino acid chelated compounds has been found to be helpful in reducing abiotic stress in plants. In our present study, we used lysine chelated zinc (Zn-lys) as foliar application on maize (Zea mays L.), growing in different concentrations of tannery wastewater. Zinc (Zn) is required by plants for growth, and lysine is an essential amino acid. Maize plants were grown in tannery wastewater in four concentrations (0, 25%, 50%, and 100%) and Zn-lys was applied as a foliar spray in three concentrations (0 mM, 12.5 mM, and 25 mM) during plant growth. Plants were cautiously harvested right after 6 weeks of treatment. Foliar spray of Zn-lys on maize increased the biomass and improved the plant growth. Photosynthetic pigments such as total chlorophyll, chlorophyll a, chlorophyll b and contents of carotenoids also increased with Zn-lys application. In contrast to control plants, the hydrogen peroxide (H2O2) contents were increased up to 12%, 50%, and 68% in leaves, as well as 16%, 51% and 89% in roots at 25%, 50%, and 100% tannery water application, respectively, without Zn-lys treatments. Zn-lys significantly reduced the damages caused by oxidative stress in maize plant by decreasing the overproduction of H2O2 and malondialdehyde (MDA) in maize that were produced, due to the application of high amount of tannery wastewater alone. The total free amino acids and soluble protein decreased by 10%, 31% and 64% and 18%, 61% and 122% at 25%, 50% and 100% tannery water treatment. Zn-lys application increased the amino acids production and antioxidant activities in maize plants. Zn contents increased, and Cr contents decreased, in different parts of plants with Zn-lys application. Overall, a high concentration of tannery wastewater adversely affected the plant growth, but the supplementation of Zn-lys assertively affected the plant growth and enhanced the nutritional quality, by enhancing Zn and decreasing Cr levels in plants simultaneously irrigated with tannery wastewater.

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