Effect of using selected growth regulators to reduce sunflower stand height

Spitzer, T.; Bílovský, Jan; Kazda, Jan

doi:10.17221/213/2018-pse

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…This study indicated that DPC-treated soybean varieties showed significantly reduced plant height compared to the control. Spitzer et al found that the activities of key enzymes in the early synthesis of gibberellin, ent-copalyl diphosphate synthase, and ent-kaurene synthase were inhibited by DPC treatment, and the plant height of maize was significantly reduced (Spitzer et al, 2016), which was consistent with the results of the present study. Proteomics results showed that xyloglucan endotransglucosylase (A0A445LKH0) and pectin acetylesterase (A0A445F2P8), which are related to cell wall construction, were significantly downregulated.…”

Section: Discussionsupporting

confidence: 92%

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Physiology and proteomics analyses reveal the regulatory mechanism of mepiquat chloride in soybean

Song

Tian

et al. 2023

Front. Sustain. Food Syst.

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Soybean is an important grain and oil crop cultivated worldwide. Mepiquat chloride (DPC), a plant growth regulator, is widely used in cotton planting; however, its application in soybean remains rarely studied. Herein, we explored DPC regulation in soybeans using morphology, physiology, and proteomics analyses. Morphological and physiological analyses showed that DPC significantly reduced the plant height and shoot dry weight, promoted the growth of lateral roots in a specific concentration range, increased the activities of the leaf protective enzymes (superoxide dismutase and catalase), and decreased and increased malondialdehyde and total flavonoid contents, respectively. Proteomic analysis of leaves treated with 100 mg/L DPC revealed that multiple proteins related to plant growth and stress resistance were regulated after treatment. The key proteins involved in photosynthesis and cell wall elongation in the two varieties of soybean were significantly downregulated and those related to promoting lateral root growth and stress resistance were significantly upregulated. Overall, DPC inhibited shoot growth and photosynthesis in soybean but promoted lateral root growth, enhanced protective enzyme activity, and improved the ability of plants to resist abiotic stress. This study preliminarily determined the suitable DPC concentration for soybean spraying and provided a theoretical basis for its rational application.

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Section: Discussionsupporting

confidence: 92%

“…Mepiquat chloride has been widely used as a growth retardant in cotton and maize (Spitzer et al, 2016;Echer and Rosolem, 2017); however, its application in soybeans remains scarcely studied. In this study, the regulatory mechanism of DPC in soybean was comprehensively analyzed by spraying DPC at the seedling stage.…”

Section: Discussionmentioning

confidence: 99%

Physiology and proteomics analyses reveal the regulatory mechanism of mepiquat chloride in soybean

Song

Tian

et al. 2023

Front. Sustain. Food Syst.

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Response of sunflower hybrids to crop density in the steppe of Ukraine

Andriienko

Vasylkovska

Andriienko

et al. 2020

Helia

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Field studies conducted in 2018–2019 in the northern Steppe of Ukraine with sunflower hybrids of different maturity groups (LG 50300, LG 5580, LG 5478, LG 5638, LG 5662) showed that the crop density of early-crop hybrid LG 50300 from 55,000 plants/hectare to 70,000 plants/hectare led to a decrease in productivity by 0.11 t ha−1 and a decrease in oil content by 0.9%. The density of middle-early hybrid LG 5580 resulted in a decrease in sowing productivity of 0.21 t ha−1, while oil content remained nearly the same. Another middle-early hybrid LG 5478 showed slight variations in productivity and oil content with an increase of crop density. The study of the mid-season hybrid LG 5038 showed a decrease in sowing productivity by 0.2 t ha−1 with the density up to 70,000 plants/hectare. Mid-season hybrid LG 5662 with density of 70,000 plants/hectare showed productivity increase by 0.14 t ha−1.

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Dynamics of export potential of sunflower oil in Ukraine

Vasylkovska

Andriienko

Vasylkovskyi

et al. 2021

Helia

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The analysis of the production and yield of sunflower seeds in Ukraine for the period from 2000 to 2019 was conducted in the article. The comparative analysis of the gross harvest of sunflower seeds and the export of sunflower oil for the years under research was carried out. The dependence of exports on gross harvest was revealed and its share was calculated. It was determined that the export of sunflower oil has increased over the years under research, which indicates a significant Ukraine’s export potential. It was found that the increase in the share of exports by 15.9% was made possible by a qualitative change in yield, that was ensured by the changes in the cultivation technology and by the selection of sunflower hybrids that are better adapted to climate changes. The recommendations for further improvement of cultivation technology in connection with climate change in order to further increase yields and the export potential of Ukraine were given.

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Effect of using selected growth regulators to reduce sunflower stand height

Cited by 3 publications

References 10 publications

Physiology and proteomics analyses reveal the regulatory mechanism of mepiquat chloride in soybean

Physiology and proteomics analyses reveal the regulatory mechanism of mepiquat chloride in soybean

Response of sunflower hybrids to crop density in the steppe of Ukraine

Dynamics of export potential of sunflower oil in Ukraine

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