Effects of gibberellic acid and prohexadione-calcium on growth, chlorophyll fluorescence and quality of okra plant

Ilias, I.; Ouzounidou, Georgia; Γιαννακούλα, Αναστασία; Papadopoulou, P.

doi:10.1007/s10535-007-0126-5

Cited by 32 publications

(31 citation statements)

References 23 publications

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“…Growth retardants may delay flowering in vegetable crops, including eggplants, and cause yield and income losses. These findings on eggplant flowering are in line with Ilias et al (2007), who reported that control and prohexadione-calcium-treated okra plants took the same time to bloom. In contrast, the application of 200 mg L -1 prohexadione calcium, 45 days after planting, delayed anthesis up to 11 days (Cerny-Koenig et al, 2005).…”

Section: Resultssupporting

confidence: 89%

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Prohexadione calcium on the growth and quality of eggplant seedlings

Ozbay

Ergun

2015

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effects of prohexadione calcium concentrations on the growth and quality of eggplant (Solanum melongena) seedlings. The effects of prohexadione calcium concentrations of 0, 50, 100, or 150 mg L -1 on seedling growth parameters were evaluated in a greenhouse experiment. After the greenhouse experiment, the seedlings were transplanted to the field. During the field experiment, the number of days to flowering, plant height, number of fruits per plant, average fruit weight and yield were evaluated. Both experiments were carried out in a completely randomized design with four replicates. All prohexadione calcium concentrations significantly reduced shoot height and internode length, when compared to the control. The concentrations of 50, 100, and 150 mg L -1 prohexadione calcium reduced shoot height by 27, 32, and 38%, respectively. Prohexadione calcium treatments (except the one with 50 mg L -1 ) enhanced relative chlorophyll content of leaves in comparison to the control. There were no delays in flowering and no significant differences in number of fruits per plant among treatments with prohexadione calcium. The concentrations of 100 and 150 mg L -1 prohexadione calcium significantly reduced yield per plant and total fruit yield, whereas the concentration of 50 mg L -1 did not cause any change in yield compared to the control. The lowest prohexadione calcium concentration can be used to control excessive elongation of eggplant seedlings without yield loss.Index terms: Solanum melongena, growth retardant, seedling height control. Prohexadiona de cálcio sobre o crescimento e a qualidade de mudas de berinjelaResumo -O objetivo deste trabalho foi avaliar os efeitos da aplicação de prohexadiona de cálcio no crescimento e na qualidade de mudas de berinjela (Solanum melongena). Os efeitos das concentrações de 0, 50, 100 ou 150 mg L -1 de prohexadiona de cálcio nos parâmetros de crescimento de mudas foram avaliados em experimento em casa de vegetação. Após a avaliação em casa de vegetação, as plântulas foram transplantadas para o campo. No experimento em campo, foram avaliados número de dias para o florescimento, altura de plantas, número de frutos por planta, peso médio e produtividade dos frutos. Ambos os experimentos foram realizados em delineamento inteiramente casualizado, com quatro repetições. Todas as concentrações de prohexadiona de cálcio reduziram significativamente a altura da parte aérea e o comprimento dos entrenós, em comparação ao controle. As concentrações de 50, 100 e 150 mg L -1 de prohexadiona de cálcio reduziram a altura da parte aérea em 27, 32 e 38%, respectivamente. Os tratamentos com prohexadiona de cálcio (exceto o de 50 mg L -1 ) aumentaram o teor de clorofila na folha, em relação ao controle. Não foram observados atrasos na floração nem diferenças significativas no número de frutos por planta entre os tratamentos com prohexadiona de cálcio. As concentrações de 100 e 150 mg L -1 de prohexadiona de cálcio reduziram a produção por planta e o ...

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Section: Resultssupporting

confidence: 89%

“…Effects of prohexadione calcium treatments on shoot fresh weight, shoot dry weight, root fresh weight, root dry weight, and relative leaf chlorophyll content (SPAD units) of 5-week-old eggplant (Solanum melongena) seedlings (1) . (Giannakoula & Ilias, 2007).…”

Section: Resultsmentioning

confidence: 99%

Prohexadione calcium on the growth and quality of eggplant seedlings

Ozbay

Ergun

2015

Pesq. agropec. bras.

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“…Ayas et al, (2005) on spinach plants reported that humic acid had significant effects regarding leaves NPK uptake. Ilias et al, (2007) on okra found that application of HA promoted the accumulation of K, B, Mg, Ca and Fe in leaves. Also, Celik et al, (2008) reported that HA significantly increased mineral-nutrients uptake.…”

Section: -Nutrients Contents Of Leavesmentioning

confidence: 99%

Study on the Response of Statice Plants (Limonium sinuatum, L.) to Humic Acid Application

2016

Alexandria Science Exchange Journal: An International Quarterly

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“…Pro-Ca has been registered in the U.S.A and Europe for use on apple [65], rice [63], petunia and okra plants [66], Camarosa strawberry [67], sorghum [68] and peanut [69]. Application of Pro-Ca reduces the length of stem internode and vegetative growth of fruit trees including apple [70], pear [62] and cherry [71].…”

Section: Dwarfing By Chemical Treatmentmentioning

confidence: 99%

“…Generally, the rate needed for effective vegetative control has to be raised as the vegetative vigour of the trees increases [63]. The compound has been reported to have no negative effect on yield, fruit quality, fruit set and flower initiation [62,70,72], although delayed initiation of flowering or fruit set has been reported in several studies [66]. Pro-Ca significantly shortened the annual shoots of a walnut cultivar [73], and greatly suppressed the stem length of peanut [69] and sweet sorghum crops [74].…”

Section: Dwarfing By Chemical Treatmentmentioning

confidence: 99%

Dwarfing of Breadfruit (Artocarpus altilis) Trees: Opportunities and Challenges

Zhou

Taylor

Underhill

2014

AJEA

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Breadfruit [Artocarpus altilis (Parkinson) Fosberg)] is a traditional staple crop grown for its starchy fruit throughout the tropics. It has long been recognized for its potential to alleviate hunger in the region. However, being a tree of 10 -30m, breadfruit is vulnerable to wind damage. Owing to the continuing trend of global climate change, the success of the species as a sustainable crop for delivering local food security is compromised by the likelihood of more intense tropical windstorms in the island nations. Tree height also forms a major constraint to disease management and fruit harvesting. These imperatives have driven an increasing interest in developing breadfruit varieties with short stature. While a great diversity of breadfruit cultivars with varying nutritional and agronomic characteristics exists, the genetic resource showing dwarfing traits is largely uncharacterised. Historically, there has been no intentional breeding for breadfruit cultivars. The long growth cycle, predominantly vegetative propagation and lack of genome information create challenge for crop improvement through traditional breeding. In this review, we highlight the current knowledge of plant dwarfism and its application in agricultural practices and genetic improvement for dwarf phenotype, and present options and tools for breadfruit dwarfing with special reference to natural genetic variability for dwarfing rootstocks, plant growth regulators, potential of mutagenesis and its combination with the currently Review Article

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Effects of gibberellic acid and prohexadione-calcium on growth, chlorophyll fluorescence and quality of okra plant

Cited by 32 publications

References 23 publications

Prohexadione calcium on the growth and quality of eggplant seedlings

Prohexadione calcium on the growth and quality of eggplant seedlings

Study on the Response of Statice Plants (Limonium sinuatum, L.) to Humic Acid Application

Dwarfing of Breadfruit (Artocarpus altilis) Trees: Opportunities and Challenges

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