The effect of gibberellin and retardants on the redistribution of carbohydrates and nutrients in gooseberry (Grossularia reclinat (L.) Mill) leaves and stems in relation to the culture productivity

Kuryata, V.G.; Shataliuk, H. S.

doi:10.15407/frg2020.01.031

Cited by 2 publications

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“…Retardants are a large group of chemical compounds of different structures, united by common genetic, physiological and morphological effects and mode of action. These substances are able to affect the morphogenesis of plants (Altintas, 2011;Yang et al, 2016;Kuryata & Shataliuk, 2020), regulation of growth processes, by shortening and thickening the stem, reducing the tendency to lodging, to enhance root growth (Kasem & Abd El-Baset, 2015;Carvalho et al, 2016;Espindula et al, 2010;Hu et al, 2017;Zhang et al, 2017a;Berry & Spink, 2012), to increase the photosynthetic ability of plants Sakr, 2009), to influence the accumulation of nutrients in plants (Virych et al, 2012;Schwartau et al, 2018), to increase plant productivity and their resistance to adverse environmental factors (Matysiak, 2006;Berti et al, 2007;Shekoofa & Emam, 2008;Hu et al, 2017;Zhang et al, 2017b;Makoveychuk et al, 2018;Mykhalska et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Mode of physiological activity of acylcyclohexadione retardants

2020

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The key to high productivity of plants, especially cereals, is to control lodging of cereals. Among the derivatives of acylcyclohexadiones (ACHD), highly effective retardants have been invented, which are widely used in modern crop production to control the lodging of cereals, mainly winter wheat, spring and winter wheat, winter, spring and hybrids of barley. The mechanisms of influence of ACHD derivatives – trinexapac-ethyl and prohexadione-Ca on plants and features of their application in technologies of cultivation of cultivated plants are considered. By using a composition of ACHD derivatives with a number of agrochemicals, enhancement of retardant activity is achieved. Given the identified varietal variability of the effectiveness of the use of ACHD derivatives in cereals, it is advisable to conduct registration and post-registration studies primarily on varieties that occupy the largest sown areas in the country. The peculiarities of ACHD derivatives’ influence on stem components as the main one, along with the flag leaf, carbon pool for grain filling in the ear and possible reasons for the lack of productivity increase of grain crops due to ACHD derivatives are also considered. This class of substances continues to be widely studied in the world and remains among the most promising for the development of new agrochemicals and drugs.

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Section: Introductionmentioning

confidence: 99%

Mode of physiological activity of acylcyclohexadione retardants

2020

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About the work of Vinnytsia regional branch of the Ukrainian Society of Plant Physiologists

Kuryata¹

2020

Fiziol.rast. genet.

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The work and the main scientific results of the Vinnytsia branch of the USPP from the moment of its formation to the present time are analyzed. The main direction of research is exogenous regulation of plants source-sink relations in the systems «photosynthesis—growth», «depot of assimilates—growth» in the heterotrophic phase of plant development, and «macrosymbiont—microsymbiont» in symbiotic nitrogen fixation systems. Gibberellin and antigibberellin preparations (retardants) were used to create different tension of source-sink relations. It was found that under the influence of retardants, the decrease in the linear growth rate was accompanied by an increase in the cytokinins content with a decrease in the indoleacetic acid content in stems and leaves tissues of a wide range of plants. The free gibberellins activity was lower compared to control. At the same time, the content of these phytohormones antagonist, abscisic acid, increased. The retardants increased the stem branching, leaves number, weight and leaf surface area, optimized the leaves mesostructural organization, resulting in an increase in the photosynthetic net productivity. These changes lead to increased crop productivity. Under the conditions of artificial combination of external (light/dark) and hormonal factors (gibberellic acid and retardants) during seed germination, changes in the functioning of the source-sink system in the heterotrophic stage of plant development from seeds with different reserve substances types were studied. Gibberellin stimulated the starch breakdown in both light and dark, but under conditions of germination in the dark, the rate of reserve seed starch use was higher. Gibberellin also stimulated the seed reserve proteins hydrolysis, but the process began after intensive starch hydrolysis. Peculiarities of regulation of source-sink relations in the system «macro—microsymbiont» during the processes of symbiotic nitrogen fixation under the action of antigibberellin preparations — retardants are revealed. It was found that the typical reaction of soybean plants to the paclobutrazol application was a decrease in the free form gibberellins activity and an increase in the abscisic acid content, which led to changes in morphogenesis. Under the retardants action, the processes of formation of the symbiotic complex «soybean—Bradyrhizobium japonicum» intensify, nitrogenase activity increased, crop yield rised.

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The effect of gibberellin and retardants on the redistribution of carbohydrates and nutrients in gooseberry (Grossularia reclinat (L.) Mill) leaves and stems in relation to the culture productivity

Cited by 2 publications

References 21 publications

Mode of physiological activity of acylcyclohexadione retardants

Mode of physiological activity of acylcyclohexadione retardants

About the work of Vinnytsia regional branch of the Ukrainian Society of Plant Physiologists

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