Influence of Nitrogen Supply on Photosynthesis, Grain Productivity and Protein Content of Winter Wheat

Shegeda, I.M.; St., Kyiv Vasylkivska; Pochinok, V.M.; Kiriziy, D.A.; Mamenko, Т. P.

doi:10.15407/frg2018.02.105

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…A photosynthetic apparatus is a volumetric reservoir for storing organic forms of nitrogen. That is why its efficiency determines the future yield potential of plants (Sheheda et al, 2018), is the basis of their productivity, and largely depends on the content and ratio of pigments in plant (Juchnevičienė & Vagusevičienė, 2015). The plant growing environment affects the mechanisms of pigment activity.…”

Section: Relevancementioning

confidence: 99%

Features of the pigment complex of winter wheat plants depending on the method of fertilisation

Bilousova,

Klipakova,

Keneva

2021

Rosl. g̀runtozn.

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To maximise the yield of winter wheat, it is necessary to further optimise modern cultivation technologies to adapt them to changing environmental conditions. One of the aspects of plant adaptation to unfavourable abiotic factors is the active functioning of the photosynthetic apparatus, which depends on the number of nutrients applied. This paper investigates the effect of fertilisation on the state of the pigment complex of winter wheat plants in the Southern Steppe of Ukraine. Two varieties of winter wheat were selected for the study: Shestopalivka and Mason. The scheme of the experiment included the application of fertilisers during sowing (К0; К12) and foliar processing with various tank mixtures (urea; urea + magnesium sulphate; urea + magnesium sulphate + potassium monophosphate). The pigment content was determined by grinding fresh leaves of winter wheat with further addition of a solvent in the form of acetone. The pigments were measured using a spectrophotometer. The results of the studies showed that before foliar fertilisation, the content of chlorophyll a and carotenoids was higher in the leaves of plants of the Shestopalivka variety. At the same time, the content of chlorophyll b was higher for Mason plants by 17%, which may be a consequence of the adaptation of plants of this variety to a lack of light. A decrease in the pigment content in the leaves of plants of all experimental variants caused by the active growth of the photosynthesising surface and a decrease in the total dry matter mass was observed on day 3 after the foliar fertilisation. There was no significant difference between varieties in the content of photosynthetic pigments during this period. On the 10th day after foliar spraying, an increase in the content of chlorophyll a and b was observed for both studied varieties, which may be the result of the adaptation of the photosynthetic apparatus of winter wheat plants to lighting conditions. Foliar fertilisation of winter wheat plants with a tank mixture of urea with magnesium sulphate and potassium monophosphate contributed to a further increase in the content of chlorophyll a by 12-23% and chlorophyll b by 5-37%, depending on the variety compared to the control. The results of the conducted research indicate the high efficiency of the complex application of nitrogen-phosphorus-potassium fertilisers for foliar spraying of winter wheat plants at the stage of BBCH 31 both on the background of pre-sowing potassium fertilizers and without it

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Section: Relevancementioning

confidence: 99%

Features of the pigment complex of winter wheat plants depending on the method of fertilisation

Bilousova,

Klipakova,

Keneva

2021

Rosl. g̀runtozn.

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“…Ми встановили, що позакореневе підживлення рослин пшениці карбамідом сприяє збереженню вмісту хлорофілу та інтенсивності фотосинтезу прапорцевих листків триваліший час протягом наливан-ня зерна порівняно з необробленими рослинами [70]. Цікаво зазначити, що за високого фону мінерального живлення позитивний ефект цього заходу ліпше виявився у фазу молочно-воскової стиглості, тоді як у рослин за низького фону живлення він спостерігався вже у фазу молочної стиглості.…”

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Nitrogen distribution in the source-sink system of plants and its role in the production process

Kiriziy¹,

Shegeda²

2019

Fiziol. rast. genet.

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В огляді на основі даних літератури і результатів власних досліджень авторів проаналізовано питання зв'язку фотосинтезу й азотного статусу рослинного організму стосовно проблем формування продуктивності та якості сільськогосподарських рослин. Особливу увагу приділено головному хлібному злаку -пшениці. Розглянуто питання розподілу азоту між компонентами фотосинтетичного апарату та ефективністю його використання в процесі асиміляції СО 2 . Показано, що ефективність використання азоту для фотосинтезу новими високоінтенсивними сортами пшениці вища, ніж сортом ранішньої селекції. Висвітлено особливості перерозподілу азоту між органами рослин пшениці в процесі дозрівання зерна у зв'язку з інтенсивністю фотосинтезу, продуктивністю та білковістю зерна. Продемонстровано, що у формуванні білковості вирішальне значення має ефективність реутилізації азотовмісних сполук із вегетативних органів, а також підтримання вбирної здатності коренів після цвітіння пшениці. Останньому сприяє стимуляція інтенсивності фотосинтезу позакореневим підживленням. Цей захід поліпшує загальну ефективність використання рослинами пшениці азоту для наливання зерна як накопиченого в пагоні до цвітіння, так і внесеного у ґрунт. Наголошено, що проблема підвищення ефективності використання азоту в донорно-акцепторній системі культурних рослин має дві складові: ефективність його використання у фізіологічних процесах, насамперед при фотосинтезі, та повнота реутилізації в запасаючі тканини при дозріванні, яка визначає якість продукції. Між цими складовими існують певні протиріччя, на вирішенні яких як генетичними, так і технологічними шляхами зосереджена увага дослідників.

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Peculiarities of pigment complex functioning of winter wheat plants depending on the fertilizer application method

2021

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To obtain the maximum yield of winter wheat, it is necessary to further optimize the existing cultivation technologies in the direction of their adaptation to changing environmental conditions. One of the areas of adaptation of plants to adverse abiotic factors is the active functioning of the photosynthetic apparatus, which depends on the amount of nutrients introduced. The influence of fertilizer application on the condition of the pigment complex of winter wheat plants in the conditions of the Southern Steppe of Ukraine has been studied. Two varieties of winter wheat were selected for the study: Shestopalivka and Mason. The experiment scheme involved the application of fertilizers at sowing (K0; K12) and foliar treatment with various tank mixtures (urea; urea + magnesium sulfate; urea + magnesium sulfate + potassium monophosphate). The pigment content has been determined by grinding fresh leaves of winter wheat, followed by the addition of a solvent in the form of acetone. Measurements of pigments were performed using a spectrophotometer. According to the research results, it was established that before the foliar treatment the a-chlorophyll content and carotenoids was higher in the plant leaves of the Shestopalivka variety. At the same time, the b-chlorophyll content on the contrary was higher for plants of the Mason variety by 17%, which may be due to the adaptation of plants of this variety to lack of light. On the 3rd day after foliar treatment, a decrease in the pigment content in the plant leaves of all experimental variants has been observed, which was due to the active growth of the photosynthetic surface and a decrease in the total dry matter mass. There was no significant difference between the varieties of the content of photosynthetic pigments in this period. On the 10th day after foliar treatment, an increase in a- and b-chlorophyll content has been observed for both studied varieties, which may be the result of adaptation of the photosynthetic apparatus of winter wheat plants to lighting conditions. Foliar treatment of winter wheat plants with a tank mixture of urea with magnesium sulfate and potassium monophosphate contributed to a further increase in the content of a-chlorophyll by 12-23%, and b-chlorophyll by 5-37% depending on the variety compared to the control. The results of the research testify to the high efficiency of complex application of nitrogen-phosphorus-potassium fertilizers for foliar treatment of winter wheat plants in the BBCH 31 stage, both against the background of pre-sowing application of potassium fertilizers and without it.

show abstract

Influence of Nitrogen Supply on Photosynthesis, Grain Productivity and Protein Content of Winter Wheat

Cited by 4 publications

References 7 publications

Features of the pigment complex of winter wheat plants depending on the method of fertilisation

Features of the pigment complex of winter wheat plants depending on the method of fertilisation

Nitrogen distribution in the source-sink system of plants and its role in the production process

Peculiarities of pigment complex functioning of winter wheat plants depending on the fertilizer application method

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