Photosynthetic capacity and assimilate transport of the lower canopy influence maize yield under high planting density

PLANT PHYSIOLOGY, Год журнала: 2024, Номер 195(4), С. 2652 - 2667

Опубликована: Апрель 9, 2024

Photosynthesis is a major trait of interest for the development high-yield crop plants. However, little known about effects high-density planting on photosynthetic responses at whole-canopy level. Using high-yielding maize (Zea mays L.) cultivars "LY66," "MC670," and "JK968," we conducted 2-yr field experiment to assess ear in addition leaf characteristics parameters each canopy layer 4 densities. Increased density promoted high grain yield population-scale biomass accumulation despite reduced per-plant productivity. MC670 had strongest adaptability conditions. A physiological analysis showed that increased primarily led decreases single-leaf area above LY66 below JK968. Furthermore, decreased chlorophyll content rate due transmission, leading severe single-plant lower canopy. Moreover, improved presilking transfer, especially The significant positive relationships with photosynthesis canopy, demonstrating important contributions these leaves under dense retarded as consequence glucose fructose contents ears, indicating reductions sugar transport were associated limited sink organ development, kernel number, loss. Overall, findings highlighted capacities promising targets improving

Язык: Английский

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Critical period for yield determination across grain crops

Trends in Plant Science, Год журнала: 2023, Номер 29(3), С. 329 - 342

Опубликована: Сен. 16, 2023

Язык: Английский

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Synergistic effects of planting density and nitrogen fertilization on chlorophyll degradation and leaf senescence after silking in maize

The Crop Journal, Год журнала: 2024, Номер 12(2), С. 605 - 613

Опубликована: Март 13, 2024

Regulating planting density and nitrogen (N) fertilization could delay chlorophyll (Chl) degradation leaf senescence in maize cultivars. This study measured changes ear green area (GLAear), Chl content, the activities of a-degrading enzymes after silking, post-silking dry matter accumulation grain yield under multiple densities N rates. The dynamic change GLAear silking fitted to logistic model, duration (GLADear) at 42 d were affected mainly by initial period (T1) which was a key factor senescence. average chlorophyllase (CLH) activity 8.3 times higher than pheophytinase contributed most GLADear, indicating that CLH is enzyme for degrading maize. Increasing increased decreased GLAear, GLADear T1. Under high density, appropriate application prolonged T1, reduced activity, alleviated high-density-induced senescence, yield.

Язык: Английский

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How does increasing planting density affect nitrogen use efficiency of maize: A global meta-analysis

Field Crops Research, Год журнала: 2024, Номер 311, С. 109369 - 109369

Опубликована: Апрель 17, 2024

Язык: Английский

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Plant hormesis: the energy aspect of low and high-dose stresses

Plant Stress, Год журнала: 2024, Номер 14, С. 100628 - 100628

Опубликована: Окт. 9, 2024

Язык: Английский

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Historical increases of maize leaf area index in the US Corn Belt due primarily to plant density increases

Field Crops Research, Год журнала: 2024, Номер 318, С. 109615 - 109615

Опубликована: Окт. 19, 2024

Язык: Английский

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NTRI: A novel spectral index for developing a precise nitrogen diagnosis model across pre- and post-anthesis stages of maize plants

Field Crops Research, Год журнала: 2025, Номер 325, С. 109829 - 109829

Опубликована: Фев. 27, 2025

Язык: Английский

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Nitrogen availability determines the vertical patterns of accumulation, partitioning, and reallocation of dry matter and nitrogen in maize

Field Crops Research, Год журнала: 2023, Номер 297, С. 108927 - 108927

Опубликована: Апрель 18, 2023

Язык: Английский

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How does increasing planting density regulate biomass production, allocation, and remobilization of maize temporally and spatially: A global meta-analysis

Field Crops Research, Год журнала: 2024, Номер 315, С. 109430 - 109430

Опубликована: Июнь 9, 2024

Язык: Английский

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Maize kernel weight genetic gain is achieved through different mechanisms depending on the hybrid maturity

Field Crops Research, Год журнала: 2023, Номер 303, С. 109123 - 109123

Опубликована: Сен. 13, 2023

Язык: Английский

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