scholarly journals Effect of Exogenous Application of Several Plant Growth Regulators on Photosynthetic Pigments of Fennel Plants

2018 ◽  
Vol 10 (4) ◽  
pp. 508-515 ◽  
Author(s):  
Ghasem PARMOON ◽  
Ali EBADI ◽  
Soodabe JAHANBAKHSH ◽  
Masoud HASHEMI ◽  
Seyed Amir MOOSAVI
Keyword(s):  
Plant Growth ◽  
Methyl Jasmonate ◽  
Chlorophyll A ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Photosynthetic Pigments ◽  
Total Chlorophyll ◽  
Dark Condition ◽  
Phenol Content ◽  
Maximum Quantum Efficiency

In order to investigate the effects of some plant growth regulators on photosynthetic pigments and growth of fennel plants, a greenhouse experiment was conducted based on the randomized complete block design with three replicates in 2017. Treatments were the application of methyl jasmonate (25, 50, 100 and 200 μM), putrescine (0.25, 0.5, 1 and 2 mM) and 24-Epibrassinolide at 0.001, 0.01, 0.1 and 1 μM and distilled water as a control. The results indicated that application of 0.5 Mm putrescine, exhibited significant effects on the chlorophyll a (62%), b (104%), total chlorophyll (72%), carotenoids (51%), flavonoids (51%), anthocyanin content (-14%), phenolic compounds (13%) and maximum quantum efficiency (17%) in dark condition and in light condition. Application of 24-Epibrassinolide resulted in a significant increase of chlorophyll a and total chlorophyll, carotenoids, phenol content, maximum quantum efficiency in the dark condition and photochemical quenching of fluorescence. The highest chlorophyll content and carotenoids were observed in treated plants with 0.1 µM 24-Epibrassinolide, while the maximum phenol content was obtained by application of 0.01 µM 24-Epibrassinolide. The application of methyl jasmonate significantly affected the major chlorophyll and accessory pigments (except phenol) of fennel. Plants treated with 50 µM methyl jasmonate exhibited higher concentrations of chlorophyll a (3.25 mg per g FW-1), total chlorophyll (4.35 mg per g FW-1), carotenoids (0.87 mg per g FW-1) and flavonoids (4.75 µg per g FW-1). A significant dry weight increased after the application of methyl jasmonate and it can be concluded that the most effective treatment in this regard for fennel plants was 50 µM methyl jasmonate.

Total chlorophyll, growth and productivity of soybean [Glycine Max (L) Merril] under different levels and sources of phosphorus and plant growth regulators in south Rajasthan, India

2016 ◽  
Author(s):  
Shankar Lal Khaswan ◽  
R. K. Dubey ◽  
R. C. Tiwari ◽  
S. K. Dubey ◽  
Raj Kumari Chaudhary
Keyword(s):  
Plant Growth ◽  
Chlorophyll Content ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Total Biomass ◽  
Total Chlorophyll ◽  
Water Spray ◽  
Benzyl Adenine ◽  
Total Chlorophyll Content ◽  
Different Levels

An experiment was conducted at the Instructional Farm of Rajasthan College of Agriculture, Udaipur during Kharif 2009 and 2010 on medium clay loam soils to assess the influence of different levels and sources of phosphorus fertilization as well as plant growth regulators on productivity of soybean. Twenty seven treatments i.e. three levels (20, 30 and 40 kg P2O5 ha-1) and three sources (Single super phosphate or SSP; phosphorus rich organic manure or PROM and di-ammonium phosphate or DAP) of phosphorus in main plots and three PGRs (water spray, benzyl adenine 50 ppm and NAA 100 ppm) in sub plots of a split plot design having three replications. Results revealed that application of 40 kg P2O5 ha-1 recorded significantly higher pooled yield (q ha-1) of grain (25.95), stover (37.34) and total biomass (63.29); crop growth rate or CGR (g m-2day-1) between 30-60 days after sowing ( DAS)(18.83) and 61-90 DAS (11.96); total chlorophyll content at 45 DAS (2.26%) and 60 DAS (2.80%); Leaf area index(LAI) at 45 DAS (1.56) and 60 DAS (3.44) and green leaves plant-1 at 45 DAS (11.98) and 60 DAS (21.43). Among different phosphorus sources, SSP outperformed DAP and PROM on pooled yield (q ha-1) of grain (25.12), stover (36.23) and total biomass (61.35); CGR (g m-2day-1) between 30-60 DAS (11.22) and 61-90 DAS (10.94); total chlorophyll content at 45 DAS (2.26%) and 60 DAS (2.76%); LAI at 45 DAS (1.51) and 60 DAS (3.42) and green leaves plant-1 at 45 DAS (11.77) and 60 DAS (21.35). Foliar application of NAA recorded significantly higher pooled yield (q ha-1) of grain (24.23), stover (35.73) and total biomass (60.01) than benzyl adenine and water spray. However, variations recorded under NAA and benzyl adenine in CGR, total chlorophyll content, LAI and green leave plant-1at different stages of soybean crop were statistically at par.

Simultaneous detection of plant growth regulators jasmonic acid and methyl jasmonate in plant samples by a monoclonal antibody-based ELISA

The Analyst ◽  
2020 ◽  
Vol 145 (11) ◽  
pp. 4004-4011
Author(s):  
Minghui Yi ◽  
Linchuan Zhao ◽  
Kang Wu ◽  
Chang Liu ◽  
Diandian Deng ◽  
...  
Keyword(s):  
Plant Growth ◽  
Jasmonic Acid ◽  
Methyl Jasmonate ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Higher Plants ◽  
Free Acid ◽  
Simultaneous Detection ◽  
Acid Form ◽  
Free Acid Form

Methyl jasmonate (MeJA) and its free-acid form, jasmonic acid (JA), collectively referred to as jasmonates (JAs), are natural plant growth regulators that are widely present in higher plants.

scholarly journals The Effect Of Some Plant Growth Regulators And Their Combination With Methyl Jasmonate On Anthocyanin Formation In Roots Of Kalanchoe Blossfeldiana

2014 ◽  
Vol 22 (2) ◽  
pp. 31-40 ◽  
Author(s):  
Justyna Góraj ◽  
Elżbieta Węgrzynowicz-Lesiak ◽  
Marian Saniewski
Keyword(s):  
Abscisic Acid ◽  
Plant Growth ◽  
Methyl Jasmonate ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Anthocyanin Accumulation ◽  
Kalanchoe Blossfeldiana ◽  
Isolated Roots ◽  
Whole Plants ◽  
Kalanchoë Blossfeldiana

AbstractIn this study, we investigated the effect of plant growth regulators (PGRs) - auxins, gibberellin, cytokinin, abscisic acid, brassinosteroid, ethylene and their interaction with methyl jasmonate (JA-Me) applied to roots of the whole plants Kalanchoe blossfeldiana on the accumulation of anthocyanins in roots. The highest stimulation of anthocyanins synthesis was stated with application of JA-Me alone. In response to treatments with the other tested PGRs, the content of anthocyanins in roots of a whole plant was different depending on the concentration of the PGR when being applied alone or together with JA-Me. Auxin, indole-3-acetic acid (IAA) at a concentration of 50 mg·L-1, indole-3-butyric acid (IBA) at 5 mg·L-1 and abscisic acid (ABA) at 10 mg·L-1 induced anthocyanin accumulation with approximately 60-115% compared to the control while 24-epibrassinolid (epiBL), gibberellic acid (GA3) and 6-benzylaminopurine (BAP) had no effect on the anthocyanin accumulation. The simultaneous administration of the PGRs with JA-Me usually resulted in the accumulation of anthocyanins in roots in a manner similar to that caused by JA-Me. PGRs applied to isolated roots did not stimulate anthocyanin accumulation, except for the combination of JA-Me with 50 mg·L-1 IAA. The results indicate that in K. blossfeldiana, the aboveground parts of the plant play an important role in the biosynthesis of anthocyanins in roots.

scholarly journals EFFECTS OF PLANT GROWTH REGULATORS AND DATES PLANTING ON SPRING MAIZE PRODUCTION UNDER AGRO-CLIMATIC CONDITIONS OF FAISALABAD, PAKISTAN

2021 ◽  
Vol 36 (2) ◽  
pp. 120-128
Author(s):  
M. Qandeel ◽  
A. Jabbar ◽  
F. U. Haider ◽  
A. L. Virk ◽  
N. U. Ain
Keyword(s):  
Heat Stress ◽  
Plant Growth ◽  
Grain Yield ◽  
Methyl Jasmonate ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Foliar Application ◽  
Block Design ◽  
Maximum Yield ◽  
Spring Maize

Maize is a widely grown cereal crop worldwide, butthe heat stress and delayed sowing of maize are major constraints that result in declining the maize productivity.Therefore, the current study was designed to investigate the growth promoting effect of different growth regulators i.e., salicylic acid, methyl jasmonate, and humic acid at multiple sowing times in  spring maize. Experiment was laid out in randomized complete block design having split-plot arrangement with three replications having plot size of 6m × 2.25m.The yield contributing agronomic parameters were recorded and analyzed statistically by using Fisher’s analysis of variance technique and treatment means were contrasted by Least significance difference having 5% probability test. Results revealed that early and delayed sowing of maize tended to decline the maize productivity and grain yield. Maximum yield and yield contributing traits were observed in S1 (recommended sowing, i.e., 20-02-2017). The plant growth regulators significantly influenced the productivity of maize and minimized heat stress. The interaction between sowing dates and plant growth regulators were also significant. Among plant growth regulators, the foliar application of methyl jasmonate resulted to produce maximum biological, grain yield, 1000-grain weight, and harvest index, which were 23.04, 36.12, 14.06 and 7.87%, respectively higher than the control.The study reported that delayed sowing of maize declined the production of maize due to the gradual rise of temperature in March and plant growth regulators had the potential to minimize the heat stress and productivity of maize.

Inclusion of plant growth regulators into priming solution improves low-temperature germination and emergence of watermelon seeds

2004 ◽  
Vol 84 (4) ◽  
pp. 1161-1165 ◽  
Author(s):  
Ahmet Korkmaz ◽  
Iskender Tiryaki ◽  
Mehmet Nuri Nas ◽  
Nusret Ozbay
Keyword(s):  
Low Temperature ◽  
Plant Growth ◽  
Methyl Jasmonate ◽  
Key Words ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Citrullus Lanatus ◽  
Germination Rate ◽  
Germination Percentage ◽  
Temperature Performance

The effects of incorporating plant growth regulators into the priming solution on low temperature germination and emergence performance of watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai. cv. Crimson Sweet] seeds were investigated. Seeds were primed in 2.5% (0.25 M) KNO3 solution for 6 d at 25°C in darkness containing one of the following: 1, 3 or 5 µM methyl jasmonate (MeJA), or 1, 3 or 5 mM spermine. Following priming, seeds were subjected to germination and emergence tests at 15°C. Priming watermelon seeds in the presence or absence of plant growth regulators significantly improved germination percentage and rate at 15°C compared to untreated seeds, which failed to germinate. Seeds primed in KNO3 solution containing 1 or 3 µM of MeJA had significantly higher germination percentages, 96 and 85%, respectively, compared to seeds primed in KNO3 only (69%). Germination rate and synchrony were improved by 1 and 3 µM of MeJA added to the priming solution. Emergence was enhanced by priming seeds in the presence of 1 µM (75%) and 3 µM (63%) MeJA compared to seeds primed in KNO3 solution, (35%) while non-primed seeds were unable to emerge at 15°C. Inclusion of spermine at all three concentrations into the priming solution did not significantly improve germination and emergence characteristics of watermelon seeds compared to seeds that were primed in KNO3 solution only. Therefore, priming watermelon seeds in 1 or 3 µM of MeJA incorporated into the KNO3 solution can be used as an effective method to improve low temperature performance of watermelon seeds. Key words: Watermelon, methyl jasmonate, polyamines, germination, emergence.

Use of plant growth regulators to increase polyphenolic compounds in the wild blueberry

2007 ◽  
Vol 87 (2) ◽  
pp. 333-336 ◽  
Author(s):  
David Percival ◽  
Joanna L. MacKenzie
Keyword(s):  
Plant Growth ◽  
Methyl Jasmonate ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Polyphenolic Compounds ◽  
Research Centre ◽  
Yield Reduction ◽  
Anthocyanin Content ◽  
Leaf Tissues ◽  
Wild Blueberry

With increasing awareness of the antioxidant properties of the wild blueberry (Vaccinium angustifolium Ait.), more emphasis has been placed on d eveloping cultural management practices to enhance fruit polyphenolic levels and the use of processing byproducts as potential polyphenolic sources for the nutraceutical market. Trials were initiated in 2004 and 2005, with four plant growth regulators (methyl jasmonate, abscisic acid, riboflavin and Retain®) applied to maturing berries of the select clone Fundy at the Wild Blueberry Research Centre (Debert, NS). Berries were harvested 3 wk after treatment applications, with collections of green leaf tissues at harvest and red leaf tissues two weeks after harvest in 2005. Assessment of polyphenolic and anthocyanin levels within the berry and leaf tissues followed the Folin-Ciocalteu and pH differential methods, respectively. Overall, substantially higher levels of polyphenolic compounds were found within the leaf tissues, although anthocyanin content was highest in the berries. The application of methyl jasmonate resulted in a minor elevation in levels of bioactives within the harvested berry and red leaf tissues. This increase in bioactives occurred, however, at the expense of harvestable yields, with lower yield in plots treated with methyl jasmonate in 2004. Results thus suggest that the use of some plant growth regulators (PGR) may serve to increase bioactives, but their value must be assessed against a possible yield reduction. In addition, these studies indicate that leaf debris may provide a superior polyphenolic source for the nutraceutical market. Key words: Wild blueberry, plant growth regulator, anthocyanins, polyphenolics

scholarly journals Inclusion of Acetyl Salicylic Acid and Methyl Jasmonate into the Priming Solution Improves Low-temperature Germination and Emergence of Sweet Pepper

HortScience ◽  
2005 ◽  
Vol 40 (1) ◽  
pp. 197-200 ◽  
Author(s):  
Ahmet Korkmaz
Keyword(s):  
Salicylic Acid ◽  
Low Temperature ◽  
Plant Growth ◽  
Methyl Jasmonate ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Germination Rate ◽  
Sweet Pepper ◽  
Germination Percentage ◽  
Emergence Percentage

The effects of incorporating plant growth regulators into the priming solution on low temperature germination and emergence percentage performance of sweet pepper (Capsicum annuum `Demre') seeds before and after seed storage were investigated. Seeds were primed in 3% KNO3 solution for 6 days at 25 °C in darkness containing one of the following: 1, 3, 5, or 10 μm methyl jasmonate (MeJA) or 0.05, 0.1, 0.5, or 1 mm acetyl salicylic acid (ASA). Following priming, seeds were either immediately subjected to germination and emergence tests at 15 °C or stored at 4 °C for 1 month after which they were subjected to germination test at 15 °C. Priming pepper seeds in the presence or absence of plant growth regulators in general improved final germination percentage (FGP), germination rate (G50) and germination synchrony (G10-90) at 15 °C compared to nonprimed seeds which had an FGP of 44%, G50 of 7.3 days and G10-90 of 7.3 days. Priming seeds in KNO3 solution containing 0.1 mm of ASA resulted in the highest germination percentage (91%), fastest germination rate (G50 = 2.2 days) and the most synchronous germination (G10-90 = 6.1 days). Emergence percentages were the highest for the seeds primed in the presence of 0.1 mm ASA (85%) and 3 μm MeJA (84%) while nonprimed seeds had an emergence percentage of 40%. Fastest emergence rates (E50) were also obtained from seeds primed in KNO3 supplemented with 3 μm MeJA (E50 = 15.2 days) and 0.1 mm ASA (E50 = 15.2 days). Shoot fresh and dry weights of pepper seedlings were significantly affected by priming treatments and priming in the presence of 0.1 mm ASA resulted in highest seedling shoot fresh and dry weights. Although all priming treatments improved germination performance of pepper seeds at 15 °C following 1 month of storage, inclusion of 0.1 mm ASA into the priming solution resulted in the highest germination percentage (84%) and germination rate (G50 = 3.8 days). These results indicate that priming seeds in 0.1 mm of ASA or 3 μm MeJA incorporated into the KNO3 solution can be used as an effective method to improve low temperature performance of sweet pepper seeds and that these seeds can be stored for 1 month at 4 °C and still exhibit improved germination performance at 15 °C.

scholarly journals Induce of Plant Growth Regulators with and without Bio-fertilizer for Enhances the Adverse Effect of Salinity on Germination, Growth and Photosynthetic Pigments

2020 ◽  
pp. 14-38
Author(s):  
Reem Ahmad Ali Basaba ◽  
Hameda El Sayed Ahmed El Sayed
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Photosynthetic Pigments ◽  
Strong Support ◽  
The Other ◽  
Dry Matter Content ◽  
Lettuce Plant ◽  
Nacl Salinity ◽  
Lettuce Seeds

This study aimed to explain the induce of plant growth regulators (ascorbic acid - AsA & salicylic acid - SA) in the presence or absence of bio-fertilizer (Acadian extract –ACE) for alleviated the effect of salinity stress on two cultivars of lettuce (Lactuca sativa, L. cv. Paris & cv. Royal). The lettuce seeds for four cultivars (cv. Paris Island Cos (cv. Paris) S1, cv. Royal S2, cv. Nader S3 & cv. Marvilli S4) soaked in PGRs (AsA, SA & GSH – 0.5 mM) and Acadian extract (ACE - 1%) for 12 hours in the dark at 4°C, for test of lettuce seeds viability (germination rate %). Germination both cultivars (cv. Paris S1 & cv. Royal S2) in trays of cork contains 218 eye for 14 days, transplanted the seedlings plant to plastic containers each pot containing one plant was irrigated with using NaCl salinity concentrations (0.00, 50; 100; 150 mM) 1st group alternative with distilled water and 2nd group alternating with ACE (1%), until harvest after 84 days. The results of germination indicated that the PGRs (AsA & SA) with both cultivars (cv. Paris S1 & cv. Royal S2) gives best results more the other PGRs (GSH) & bio-fertilizer (ACE) for the other cultivars. The data explained that the leaf number and leaf area, fresh and dry weights for shoot decreased significantly with increasing salinity concentrations compared with control, whereas the growth increased significantly more in cv. Royal S2 than in cv. Paris S1, particularly with AsA in the absence of bio-fertilizer (-ACE) more than SA compared with control. Whilst, the shoot succulence increased significantly with salinity concentrations more with AsA than SA especially in the absence of bio-fertilizer (-ACE) compared with control. However, the shoot dry matter content % decreased for both cultivars with increasing NaCl salinity concentrations especially with AsA more than SA in the absence (-ACE) compared with control. The evident recorded a significantly increased the photosynthetic pigments (Chl. a, Chl. b, carotenoids and total pigments) of leaves lettuce plant for both cultivars (cv. Paris & cv. Royal) with increasing NaCl salinity, also the photosynthetic pigments increasing more in cv. Royal S2 than in cv. Paris S1 especially with AsA more than SA in the absence (-ACE) under saline or non-saline conditions compared with the control. The data provide strong support to the hypothesis that exogenous application of AsA individually reduces the harmful effects of salinity and increases resistance to salinity in lettuce plant for both cultivars.

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