Sorting of Switchgrass (Panicum virgatum L.) seeds by a set of signs

Dryga, V.; Доронін, В. А.; Карпук, Леся Михайловна; Kravchenko, Yu.; Доронин, В. В.; Pavlichenko, A.; Шубенко, Лідія

doi:10.33245/2310-9270-2021-167-2-50-56

Cited by 3 publications

(1 citation statement)

References 7 publications

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Ðîñëèííèöòâî

Âñòóï²íòðîäóêö³ÿ ïðîñà ïðóòîïîä³áíîãî (ñâ³ò÷ãðàñó), îñîáëèâîñò³ âèðîùóâàííÿ, çáèðàííÿ é çáåð³ãàííÿ á³îìàñè òà íàñ³ííÿ âèñâ³òëåíî ó ÷èñëåííèõ ïóáë³êàö³ÿõ [1][2][3][4]. Ó äåÿêèõ íàóêîâèõ ïðàöÿõ àíàë³çóþòüñÿ âàð³àíòè äîïîñ³â-íî¿ ï³äãîòîâêè íàñ³ííÿ äî ñ³âáè òà çàõîäè âèâåäåííÿ éîãî ç³ ñòàíó ñïîêîþ [5][6][7][8].

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Introduced and registered switchgrass varieties (Panicum virgatum L.) as a source material for breeding for biomass productivity

Kulyk

Rozhko

2022

PVSandP

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Purpose. On the basis of multi-year research on the complex of economically valuable characteristics, the best switchgrass varieties (Panicum virgatum L.) ‘Patfinder’, ‘Carthage’, ‘Blackwell’, ‘Morozko’, ‘Liadovske’ and ‘Zoriane’ were singled out as a source material for breeding for productivity. Methods. The research was conducted during 2017–2021 on the basis of the Poltava State Agrarian University. The soils of the experimental site of the “Energy Crops” collection are typical chernozems with a humus content of 3.4%. Plots were planted with randomized placement of options in four-fold repetition according to the methods of experimental work in agronomy. Also, approved scientific-practical and methodical recommendations for growing energy crops were applied. To confirm the significant difference between the studied varieties, dispersion analysis using Excel and Statistica programs was used. Results. Switchgrass varieties were grouped according to the duration of the growing season into: early- (up to 160 days), medium- (161–171 days) and late ripening (more than 170 days). The complex resistance of switchgrass varieties to drought, frost and plant lodging: ‘Cave-in-Rock’, ‘Zoriane’, ‘Morozko’ and ‘Liadovske’ was revealed. It was determined that economically valuable characteristics depend to a greater extent on varietal characteristics than on growing conditions. The yield of ground vegetative mass based on dry residue for the studied varieties varied from 12.1 to 15.6 t/ha. Сonclusions. The varieties ‘Cave-in-Rock’, ‘Zoriane’, ‘Morozko’, ‘Liadovske’ were the most adaptable to growing conditions. The switchgrass varieties ‘Kanlow’ and ‘Cave-in-rock’ provided the highest plant stand and switchgrass variety ‘Dacotah’ provided the lowest plant stand. Varieties ‘Pathfinder’, ‘Blackwell’, ‘Shelter’, ‘Carthage’ and ‘Zoriane’ were singled out according to the number of stems and productivity. The latter, together with the Ukrainian variety ‘Zoriane’, are recommended to be used as starting material for crop selection based on biomass productivity.

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Introduced and registered switchgrass varieties (Panicum virgatum L.) as a source material for breeding for biomass productivity

Kulyk

Rozhko

2022

PVSandP

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Yield and quality of Panicum virgatum (Panicum virgatum L.) seed depending on varietal characteristics

Dryga,

Doronin,

Shcherbynina

et al. 2023

Agrobìologìâ

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The article presents the results of research on millet seeds the crop formation and the quality, depending on its varietal characteristics. It was experimentally proven that in the conditions of the Right Bank Forest-Steppe of Ukraine, the passage of phenological phases of growth and development of millet depended both on varietal characteristics (groups of varietal maturity) and on the number of effective temperatures. The crop yield and quality depended on the phenological phases of growth and development, particularly the phases of ﬂowering and seed formation and their conditions. On average, over three years, early and late ripening varieties had signifcantly lower seed yield compared to other variety samples. Early-ripening, mid-early and mid-late varieties had signifcantly higher seed yield. The lowest productivity was in the very early sample of Dakota – 88.3 kg/ha. The yield of very late varieties – Nezalezhnist, Kanlow and Lyadivske – made 89.7, 88.3 and 99.4 kg/ha, respectively. The study on factors affecting seed yield established that the inﬂuence of the factor "variety" was the largest and amounted to 61.1 %, and the factor of "growing conditions" affected the crop less – 11.9 %. Germination energy and seed germination, as well as its yield, depended on the maturity groups of the variety samples. Very early, early-ripening and medium-ripening varieties had the highest quality indicators, no signifcant difference was found depending on varietal characteristics. The mid-late varieties had signifcantly lower quality indicators, and the lowest quality was the very late Kanlow variety. The study on factors affecting seed quality established that the inﬂuence of the "year conditions" factor on germination energy and germination was the greatest and was 37.6–48 %, and the "variety" factor was 33.8 and 30 %, respectively. It was found that the later is the variety is of the maturity group, the higher is the sum of effective temperatures it needs and, accordingly, the longer the onset of the phenological phases of growth and development of the crop, which affects the features of seed formation and ripening and, accordingly, its quality and yield. The mid-late varieties had signifcantly lower quality indicators and the lowest ones were observed in the very late variety. Mid-late, late and very late varieties do not ripen biologically, which affects the seeds quality its germination is very low. Key words: variety samples, maturity groups, germination energy, germination, phenological phases of growth and development.

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Method of millet seeds harvesting (Panicum virgatum L.)

Dryga,

Doronin,

Honcharuk

2023

Agrobìologìâ

Self Cite

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The article presents the results of research on the effectiveness of different methods of harvesting rodshaped millet seeds – separate and direct. In particular, a separate method with maturation and drying of seeds on mown plants and a direct method with maturation and drying of threshed seeds immediately after mowing. An important element of seed harvesting technology is the determination of the optimal timing of mowing plants. It was founded that the optimal method of millet seeds harvesting is the separate method, in which the quality of seeds significantly increases regardless of the timing of mowing the seed heads into a swath at panicle browning from 75 % – the beginning of mowing to 100 % – the end of mowing. With the separate method of harvesting, both when browning 50 % of the panicle, the energy of germination, seed germination, and the weight of 1000 seeds probably increased by 5 %, 4 %, and 0.17 g respectively, and when browning 75–100 % of the panicle, compared to the direct method collection. The improvement of seed quality with the separate harvesting method, when the seeds ripen and dry on mowed plants, is due to the outflow of nutrients from the plant to the seeds, which is not the case with the direct harvesting method, where the seeds ripen and dry in the piles immediately after threshing. The quality of seeds was significantly affected by the timing of mowing of the seed bins in both the separate and direct harvesting methods. In particular, with the direct method of harvesting and browning of the panicle at 100 %, germination energy and germination rate increased by 6 %, and the weight of 1000 seeds – by 0.25 g, compared to the mowing time with the panicle browning at 50 %. This method of collecting millet seeds harvesting is not energy-intensive and can be used in seed farms that grow seeds of the crop. In order to obtain high-quality millet seeds, it is advisable to harvest the seeds separately, mowing the seed heads in a swath with panicle browning is from 75 % (beginning of mowing) to 100 % (end of mowing), ripening the seeds on the mown plants and then thresh them. The direct harvesting method significantly reduces seed quality. Key words: panicle browning, separation method, germination energy, germination, weight of 1000 seeds.

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Sorting of Switchgrass (Panicum virgatum L.) seeds by a set of signs

Cited by 3 publications

References 7 publications

Introduced and registered switchgrass varieties (Panicum virgatum L.) as a source material for breeding for biomass productivity

Introduced and registered switchgrass varieties (Panicum virgatum L.) as a source material for breeding for biomass productivity

Yield and quality of Panicum virgatum (Panicum virgatum L.) seed depending on varietal characteristics

Method of millet seeds harvesting (Panicum virgatum L.)

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