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Coordinated and published by The Grassroots Institute, the Grassroots Journal of Natural Resources (GJNR) is an international journal dedicated to the latest advancements in natural resources throughout the world. The goal of this journal is to provide a platform for scientists, social scientists, policy analysts, managers and practitioners (on all academic and professional levels) all over the world to promote, discuss and share various new issues and developments in different arenas of natural resources.
Valentine Polishchuk1, Victoria Dryha2, Volodymyr Doronin3, Lesia Karpuk4, Anatolii Bondarchuk5, Anna Brovdi*6, Mykhailo Osipov7, Olena Polishchuk8, Oksana Titarenko9, Larysa Filipova10
1Faculty of Forestry and Landscape Gardening, Uman National University, Uman, Cherkasy region, Ukraine.
Email: valentin7613@gmail.com ǀ ORCID: https://orcid.org/0000-0001-8157-7028
2Dept. of Agricultural Crop Breeding and Seed Production, Institute of Bioenergy Crops & Sugar Beets of NAAS, Kyiv, Ukraine.
Email: vikadrynika@mail.ru | ORCID: https://orcid.org/0000-0001-8085-5313
3Dept. of Agricultural Crop Breeding & Seed Production, Institute of Bioenergy Crops & Sugar Beets of NAAS, Kyiv, Ukraine.
Email: doronin1955@ukr.net | ORCID: https://orcid.org/0000-0001-9355-881X
4Faculty of Agrobiotechnology, Bila Tserkva National Agrarian University, Bila Tserkva, Kyiv region, Ukraine.
E-mail: lesia.karpuk@btsau.edu.ua ǀ ORCID: https://orcid.org/0000-0002-2303-7899
5NSC 'Institute of Agriculture NAAS', Ukraine.
Email: bondarchuk.anat@meta.ua ORCID: https://orcid.org/0009-0003-0030-1452
6Faculty of Forestry and Landscape Gardening, Uman National University, Uman, Cherkasy region, Ukraine.
Email: abrovdi@ukr.net ǀ ORCID: https://orcid.org/0000-0003-1065-705X
7Faculty of Forestry and Landscape Gardening, Uman National University, Uman, Cherkasy region, Ukraine.
Email: m3dsad@gmail.com ǀ ORCID: https://orcid.org/0000-0001-7004-1164
8Faculty of Management, Uman National University, Uman, Cherkasy region, Ukraine.
Email: apostelena71@gmail.com ǀ ORCID: https://orcid.org/0000-0001-6606-3221
9Faculty of Agrobiotechnology, Bila Tserkva National Agrarian University, Bila Tserkva, Kyiv region, Ukraine.
Email: titarenkoo1103@ukr.net ǀ ORCID: 0000-0002-0631-3353
10Faculty of Agrobiotechnology, Bila Tserkva National Agrarian University, Bila Tserkva, Kyiv region, Ukraine.
Email: lorafilipova@ukr.net ǀ ORCID: https://orcid.org/0000-0002-7447-5418
*Corresponding author
Grassroots Journal of Natural Resources, 8(2): 552-565. Doi: https://doi.org/10.33002/nr2581.6853.080226
Received: 08 July 2025
Reviewed: 18 July 2025
Provisionally Accepted: 21 July 2025
Revised: 28 July 2025
Finally Accepted: 31 July 2025
Published: 28 August 2025
The goal of this study was to investigate the factors affecting the biological dormancy of seeds and to develop methods for reducing it. The study was conducted using the mid-late octaploid variety Cave-in-rock and the mid-season tetraploid variety Sunburst. Seed quality was determined using a method developed by the Institute of Bioenergy Crops and Sugar Beets. Switch grass (Panicum virgatum L.) seed yield depends on growing conditions and the location of seed formation on plants. The highest yield was obtained on the first tier of spikes and ranged from 0.47 to 1.67, depending on growing conditions. The highest seed yield was obtained in the Cave-in-rock variety in the conditions of the Western Forest-Steppe and ranged from 1.37 to 1.84 g/plant, depending on the panicle tier. It was determined that seed yield depended on the sum of active temperatures. Thus, with a decrease in the sum of active temperatures to 2910.1 °C, seed yield decreased to 0.41 g/plant. It was found that seed quality germination energy, germination, and weight of 1,000 switchgrass (Panicumv virgatum L.) seeds depended significantly on growing conditions, namely the placement of seeds in the Right-Bank and Left-Bank Forest Steppe of Ukraine and matrical diversity of the place of seed formation on plants. On average, by variety, the weight of 1,000 seeds on the first tier panicles was higher in all soil and climate zones of cultivation and ranged from 1.56 g/plant in the Left Bank Forest-Steppe to 1.77 g/plant in the Right Bank Forest-Steppe. Seed germination in the Western and Left-Bank Forest-Steppe was higher in the Sunburst variety and amounted to 78% and 35%, respectively, while in the Right-Bank Forest-Steppe it was higher in the Cave-in-rock variety – 33%.
Panicle; Tier; Germination; Germination energy; Weight of 1000 seeds
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Polishchuk, V., Dryha, V., Doronin, V., Karpuk, L., Bondarchuk, A., Brovdi, A., Osipov, M., Polishchuk, O., Titarenko, O. and Filipova, L. (2025). Cultivation Conditions and Varietal Features Influence Seed Yield and Quality of Switch Grass (Panicumv virgatum L.). Grassroots Journal of Natural Resources, 8(2): 552-565. Doi: https://doi.org/10.33002/nr2581.6853.080226
Polishchuk, V., Dryha, V., Doronin, V., Karpuk, L., Bondarchuk, A., Brovdi, A., Osipov, M., Polishchuk, O., Titarenko, O., & Filipova, L. (2025). Cultivation Conditions and Varietal Features Influence Seed Yield and Quality of Switch Grass (Panicumv virgatum L.). Grassroots Journal of Natural Resources, 8(2), 552-565. https://doi.org/10.33002/nr2581.6853.080226
Polishchuk V., Dryha V., Doronin V., Karpuk L., Bondarchuk A., Brovdi A., Osipov M., Polishchuk O., Titarenko O., Filipova L. Cultivation Conditions and Varietal Features Influence Seed Yield and Quality of Switch Grass (Panicumv virgatum L.). Grassroots Journal of Natural Resources, 2025, 8 (2), 552-565. https://doi.org/10.33002/nr2581.6853.080226
Polishchuk, Valentine, Dryha, Victoria, Doronin, Volodymyr, Karpuk, Lesia, Bondarchuk, Anatolii, Brovdi, Anna, Osipov, Mykhailo, Polishchuk, Olena, Titarenko, Oksana, Filipova, Larysa. 2025. “Cultivation Conditions and Varietal Features Influence Seed Yield and Quality of Switch Grass (Panicumv virgatum L.)”. Grassroots Journal of Natural Resources, 8 no. 2: 552-565. https://doi.org/10.33002/nr2581.6853.080226
Polishchuk, Valentine, Victoria Dryha, Volodymyr Doronin, Lesia Karpuk, Anatolii Bondarchuk, Anna Brovdi, Mykhailo Osipov, Olena Polishchuk, Oksana Titarenko and Larysa Filipova. 2025. “Cultivation Conditions and Varietal Features Influence Seed Yield and Quality of Switch Grass (Panicumv virgatum L.)”. Grassroots Journal of Natural Resources, 8 (2): 552-565. https://doi.org/10.33002/nr2581.6853.080226
| Internet Archive: | https://archive.org/details/m-00575_202602 |
| WorldCat: | https://search.worldcat.org/title/10965610441 |
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