Differences and mechanisms of post-anthesis dry matter accumulation in rice varieties with different yield levels

Liu, Kun; Zhou, Shenqi; Li, Siyu; Wang, Jun; Wang, Weilu; Zhang, Weiyang; Zhang, Hao; Gu, Junfei; Yang, Jie; Liu, Lijun

doi:10.1016/j.crope.2022.11.003

Cited by 4 publications

(4 citation statements)

References 54 publications

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“…The developed root system is conducive to nutrient absorption, so that the grain can obtain more adequate nutrition, which results in yield accumulation. Moreover, dry matter accumulation is the basis of yield formation, and a significant positive correlation between these two parameters exists 29 . The largest dry matter accumulation under FD20 therefore contributed to the highest yield.…”

Section: Discussionmentioning

confidence: 97%

“…Moreover, dry matter accumulation is the basis of yield formation, and a significant positive correlation between these two parameters exists. 29 The largest dry matter accumulation under FD20 therefore contributed to the highest yield. Previous researchers revealed that the nitrogen accumulation in plants is directly related to the level of nitrogen use efficiency.…”

Section: Optimal Spacing Of Hole Fertilizationmentioning

confidence: 96%

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An adaptive spacing of root‐zone hole fertilization to improve production and fertilizer utilization of rapeseed

Chen,

Liu,

Gao

et al. 2024

J Sci Food Agric

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BackgroundRoot‐zone hole fertilization has a positive impact on enhancing crop production and fertilization efficiency. But, the suitable spacing of hole fertilization in rapeseed cultivation is unclear. To explore an adaptive hole spacing for improving rapeseed yield and fertilization efficiency, field experiments were conducted. Four spacing of hole fertilization were designed: 10 (FD10), 20 (FD20), 30 (FD30) and 40 cm (FD40), using no fertilization (F0) and deep banded placement of fertilizer (DBP) as controls. The burial depth was 10 cm for FD and DBP treatments.ResultsCompared to DBP, hole fertilization impacted soil microenvironment, crop growth and yield components, resulting in a significant increase of 28.4% in seed yield and 25.6% in oil yield. Seed yield in FD20 (4345.43 kg ha−1) increased by 4.3%, 9.4% and 15.1% compared to FD10, FD30 and FD40, respectively. Fertilizer partial factor productivity under FD20 was 4.2%, 8.6% and 13.9% greater than FD10, FD30 and FD40, respectively; whereas the increase for agronomic efficiency was 6.0%, 12.7% and 21.0%, and the increase for N recovery efficiency was 39.5%, 52.5% and 62.9%, respectively.ConclusionFertilization with a hole spacing of 17 cm is a promising practice to maintain high production and fertilization efficiency when cultivating rapeseed. These results provide a theoretical foundation and scientific basis for improving rapeseed productivity and fertilizer utilization.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 97%

Section: Optimal Spacing Of Hole Fertilizationmentioning

confidence: 96%

An adaptive spacing of root‐zone hole fertilization to improve production and fertilizer utilization of rapeseed

Chen,

Liu,

Gao

et al. 2024

J Sci Food Agric

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“…Increased activity of nitrogen metabolizing enzymes can directly promote nitrogen absorption and assimilation, thus enhancing nitrogen accumulation. Studies have shown that grain yield mainly depends on nutrient accumulation and nutrient transport from vegetative organs in post-anthesis [32], which depends on pre-anthesis nutrient accumulation. PAC increased nitrogen accumulation of foxtail millet under the low-middle nitrogen application levels of N75, N112.5, and N150 significantly at harvesting stage (Figure 5A), indicating that PAC had a more obvious sustained-release effect under low nitrogen condition, which could enhance the nitrogen supply in post-anthesis and significantly improve the nitrogen accumulation of plants, thus effectively solving the problem of insufficient nitrogen supply during the late growth period of foxtail millet under the background of a one-time basic fertilizer application.…”

Section: Discussionmentioning

confidence: 99%

Urea Coated with Polyaspartic Acid-Chitosan Increases Foxtail Millet (Setaria italica L. Beauv.) Grain Yield by Improving Nitrogen Metabolism

Lu,

Wang,

Zhang

et al. 2024

Plants

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Innovative measures of nitrogen (N) fertilization to increase season-long N availability is essential for gaining the optimal foxtail millet (Setaria italica L. Beauv.) productivity and N use efficiency. A split plot field experiment was conducted using the foxtail millet variety Huayougu 9 in 2020 and 2021 in Northeast China to clarify the physiological mechanism of a novel polyaspartic acid–chitosan (PAC)-coated urea on N assimilation and utilization from foxtail millet. Conventional N fertilizer (CN) and the urea-coated -PAC treatments were tested under six nitrogen fertilizer application levels of 0, 75, 112.5, 150, 225, and 337.5 kg N ha−1. The results showed that compared to CN, PN increased the foxtail millet yield by 5.53–15.75% and 10.43–16.17% in 2020 and 2021, respectively. PN increased the leaf area index and dry matter accumulation by 7.81–18.15% and 12.91–41.92%, respectively. PN also enhanced the activities of nitrate reductase, glutamine synthetase, glutamic oxaloacetic transaminase, and glutamic–pyruvic transaminase, thereby increasing the soluble protein in the leaf, plant, and grain N content at harvest compared to CN. Consequently, partial factor productivity from applied N, the agronomic efficiency of applied N, recovery efficiency of applied N, and physiological efficiency of applied N of foxtail millet under PN treatments compared to CN were increased. The improvement effect of the items above was more noticeable under the low–middle N application levels (75, 112.5, and 150 kg N ha−1). In conclusion, the PAC could achieve the goal of high yield and high N use efficiency in foxtail millet under the background of a one-time basic fertilizer application.

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“…On the one hand, this may be due to the excessive ineffective growth of rice under high TNAR, and the deterioration of population structure, which was not conducive to yield formation [43,44]. On the other hand, excessive nitrogen metabolism levels will inhibit the activity of α-amylase in stems, which is harmful to the non-structural carbohydrate translocation from stems to grains, thus reducing rice yield [45]. Appropriate TNAR could coordinate the negative correlation between total spikelets and filled grains and grain weight, ultimately improving rice yield.…”

Section: Discussionmentioning

confidence: 99%

Optimizing the Total Spikelets Increased Grain Yield in Rice

Liu,

Zhang,

Zhang

et al. 2024

Agronomy

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Maximizing rice yield potential has always been the focus of high-yield rice cultivation research. For high-yield rice cultivation and breeding, more research into the link between yield and yield components is essential. In this experiment, 38 rice varieties with different yield types and 185 rice varieties as materials were chosen. The relationships between yield and yield components were studied. The regulation effects of total nitrogen application rate (TNAR) on yield and yield components were observed. The results showed that (1) the grain yield of high-yield varieties was 189.3−195.6%, 76.1−77.7%, and 27.0−28.7% higher than that of super-low-yield, low-yield, and medium-yield varieties, respectively. Compared with rice varieties with other yield types, rice varieties with high-yield type have a higher total number of spikelets. (2) The spikelet number per panicle and total number of spikelets were significantly positively linked with grain yield, but significantly negatively correlated with filled grains and grain weight. (3) With an increase in TNAR (0−340 kg ha−1), the panicles, spikelet number per panicle, and total spikelets of rice varieties with different yield types increased gradually, and the filled grains and grain weight decreased gradually. The higher the TNAR, the more obvious the decrease in filled grains and grain weight. The grain yield of rice varieties with different yield types was the highest under the TNAR at 250 kg ha−1. The main factor contributing to its high yield was the substantial increase in total spikelets. The above results showed that increasing the spikelet number per panicle and total spikelets played a material role in improving rice yield.

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Differences and mechanisms of post-anthesis dry matter accumulation in rice varieties with different yield levels

Cited by 4 publications

References 54 publications

An adaptive spacing of root‐zone hole fertilization to improve production and fertilizer utilization of rapeseed

An adaptive spacing of root‐zone hole fertilization to improve production and fertilizer utilization of rapeseed

Urea Coated with Polyaspartic Acid-Chitosan Increases Foxtail Millet (Setaria italica L. Beauv.) Grain Yield by Improving Nitrogen Metabolism

Optimizing the Total Spikelets Increased Grain Yield in Rice

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