Effect of Gibberellic Acid on Growth and Yield of Tomato Cv. Roma

Naeem, Nisar; Ishtiaq, M.; Khan, Pordil; Mohammad, Niaz; Khan, Jehangir; Jamiher, Buzarg

doi:10.3923/jbs.2001.448.450

Cited by 14 publications

(11 citation statements)

References 2 publications

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“…Seed treatment was found to be more effective in tomatoes and potatoes, whereas root treatment produced the maximum yield in onions. Moreover, the application of calliterpenone at earlier stages produced higher yields compared to later stages of crop growth, which is in conformity with the previous findings (Naeem et al, 2001 ; Shah et al, 2006 ). In chickpeas, foliar spray with 0.001 mM was found to be more effective than the treatment of the same dose through other application methods, so we recommend a 0.001 mM dose of calliterpenone as a foliar spray in chickpeas.…”

Section: Discussionsupporting

confidence: 92%

Calliterpenone, a natural plant growth promoter from a medicinal plant Callicarpa macrophylla, sustainably enhances the yield and productivity of crops

Pandey

Awasthi

et al. 2022

Front. Plant Sci.

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The global population is rising at an alarming rate, which is threatening food and nutritional security. Although chemical fertilizers and pesticides are important for achieving food security, their excessive usage critically affects soil health and adds up residues in the food chain. There is an increasing interest in identifying eco-friendly farm inputs that can improve crop productivity through sustainable agricultural practices. One of the most common approaches to reducing chemical inputs in agriculture is the use of plant growth regulators (PGRs). Here, we demonstrate the benefits of a natural and novel plant growth enhancer “calliterpenone,” isolated from Callicarpa macrophylla, a medicinal plant, for increasing crop productivity in six crops, viz., rice, wheat, potato, tomato, chickpea, and onion. Results revealed that the application of calliterpenone (foliar spraying or seed soaking) enhanced the yield of rice (28.89%), onion (20.63%), potato (37.17%), tomato (28.36%), and chickpea (26.08%) at 0.001 mM and of wheat (27.23%) at 0.01 mM concentrations in comparison to control. This enhancement in yield was reflected through improvements in its growth attributes, viz., spike length, tillers plant−1, seeds spike−1, plant height, and biomass. Furthermore, the exogenous application of calliterpenone could increase the endogenous level of indole-3-acetic acid (IAA) in all tested crops and decrease the content of abscisic acid (ABA) in a few. Trials conducted at farmers' fields showed an overall ~12% increase in rice yield (mean of 11 farmers' fields ranging from 3.48 to 19.63%) and ~10% increase in wheat yield (ranging from 3.91 to 17.51%). The 0.001 mM of calliterpenone was the best effective dose for most crops except wheat, where a concentration of 0.01 mM was found to be the most optimal. This study indicates that calliterpenone is a natural plant growth promoter that can be used in boosting the yields of multiple crops and would be an important input component of organic farming.

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Section: Discussionsupporting

confidence: 92%

Calliterpenone, a natural plant growth promoter from a medicinal plant Callicarpa macrophylla, sustainably enhances the yield and productivity of crops

Pandey

Awasthi

et al. 2022

Front. Plant Sci.

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“…Even though there were patterns that could imply antagonism between different nutrients, the concentration of nutrients found in the biofortified broccoli microgreens in this study were comparable to the results found by Weber (2017). This study also confirms the positive relationship between K and Vit C which is similar to the results reported by Kazemi (2014) where the application of potassium nitrate resulted in increased Vit C. However, for future studies the ascorbic acid could be buffered with something other than KOH to eliminate the possible involvement of K towards the decreasing nutrient content and increasing Vit C.…”

Section: Discussionsupporting

confidence: 90%

Vitamin C biofortification of broccoli microgreens and resulting effects on nutrient composition

et al. 2023

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The consumption of plants plays an important role in human health. In addition to providing macro and micronutrients, plants are the sole sources of several phytonutrients that play a major role in disease prevention. However, in modern diets, increased consumption of cheaper, processed foods with poor nutritional value over fruits and vegetables leads to insufficient consumption of essential nutrients such as vitamin C. Taking supplements can address some of the insufficient nutrients in a diet. However, supplements are not as diverse or bioavailable as the nutrients in plants. Improving the abundance of nutrients in plants will reduce the amounts that need to be consumed, thereby reducing the price barrier and use of supplements. In this study, broccoli (Brassica oleracea var. italica) microgreens grown in a controlled environment were biofortified for increased vitamin C content. The microgreens grown on growing pads were treated with supplemental nutrient solutions. Treatments were applied four to five days after germination and included four different concentrations of ascorbic acid specifically, 0% (control), 0.05%, 0.1%, 0.25% and 0.5%, added to the nutrient solution. Microgreens with turgid cotyledons and appearance of tip of first true leaves were harvested about 14 days after germination and were analyzed for biomass, chlorophylls, carotenoids, vitamin C and other minerals content. The ascorbic acid improved the microgreens’ fresh biomass, percent dry matter, chlorophylls, carotenoids, vitamin C, and potassium content. Moreover, this study also mapped out the correlation between ascorbic acid, phytochemicals, and broccoli microgreens’ mineral composition. The total vitamin C was positively correlated to K and negatively correlated to chlorophylls, N, P, Mg, Ca, S, and B (p < 0.01). These relationships can be applied in future vitamin C biofortification research across different microgreens. In conclusion, vitamin C was increased up to 222% by supplemental ascorbic acid without being detrimental to plant health and mineral composition.

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“…The shortage of auxin and gibberellins due to high temperature stress in unsprayed flower might be the cause of poor fruit set. The increased marketable fruit number per plant, reduced fruit drop and increased fruit weight and fruit yield due to GA 3 spray have been reported by Naeem et al (2001). In this study, we observed the increased fruit weight due to single GA 3 spray.…”

Section: Discussionsupporting

confidence: 81%

Fruit Set and Yield Enhancement in Tomato (Lycopersicon esculentum Mill.) Using Gibberellic Acid and 2,4-Dichlorophenoxy Acetic Acid Spray

Luitel¹,

Lee

Kang

2015

phpf

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High temperature stress in summer season at plastic house is a limiting factor for tomato fruit set and yield. This study was performed to assess the effects of gibberellic acid (GA 3 ) and 2,4-Dichlophenoxy acetic acid (2,4-D) spray on fruit set, yield, and quality of tomato cv. 'Adoration'(Enza Zaden Co., Ltd.) under the plastic house in Hwacheon, 2011. Four concentrations (0-, 5-, 10-and 15mg•L −1 ) of GA 3 , and three concentrations (0-, 5-and 10mg•L −1 ) 2,4-D were sprayed in early flowering of tomato in the plastic house, and fruit set, yield and quality characters were observed. The results showed that spray of 10mg•L −1 GA 3 significantly increased the fruit set by 14.2% than unsprayed. The spray of GA 3 significantly increased the marketable fruit number, fruit weight, and yield. The spray of 2,4-D on blossoms significantly affected the fruit set percentage, fruit weight, marketable fruit weight and yield, and the highest fruit set observed as 62.5% in combined spray of GA 3 and 2,4-D at each 5mg•L −1 . Fruit size and total soluble solids significantly varied with the concentrations of GA 3 sprayed. The result indicates that the spray of 10mg•L −1 GA 3 and 5mg•L −1 2,4-D can be more economic and effective to increase the fruit set, and yield in tomato under high temperature condition in plastic house.

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Effect of Gibberellic Acid on Growth and Yield of Tomato Cv. Roma

Cited by 14 publications

References 2 publications

Calliterpenone, a natural plant growth promoter from a medicinal plant Callicarpa macrophylla, sustainably enhances the yield and productivity of crops

Calliterpenone, a natural plant growth promoter from a medicinal plant Callicarpa macrophylla, sustainably enhances the yield and productivity of crops

Vitamin C biofortification of broccoli microgreens and resulting effects on nutrient composition

Fruit Set and Yield Enhancement in Tomato (Lycopersicon esculentum Mill.) Using Gibberellic Acid and 2,4-Dichlorophenoxy Acetic Acid Spray

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