Selenium-silicon (Se-Si) induced modulations in physio-biochemical responses, grain yield, quality, aroma formation and lodging in fragrant rice

The effect of the light quality on 2-acetyl-1-pyrroline (2AP) during the grain filling period in fragrant rice has rarely been investigated. A pot experiment was carried out with two fragrant rice varieties, Xiangyaxiangzhan and Yuxiangyouzhan, grown under three light treatments, 100% red light (L1), 100% blue light (L2), and compound light (L3), during the grain filling period, and natural light was taken as the control (CK). The yield, quality, and fragrance were investigated. The results showed that light quality treatments significantly decreased the 2AP content in mature grains by 16.67–32.82% but improved the grain yield by 2.70–21.41% compared to CK. The regulation effects of light quality treatments on grain yield and 2AP are linked to yield-related traits, biomass accumulation, antioxidant physiology, and 2AP formation-related physiology. Additionally, light quality treatments decreased the chalky rice percentage and chalkiness, and increased the length-to-width ratio. Overall, light quality treatments during the grain filling period had a positive effect on the grain yield but not on fragrance in fragrant rice.

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Nitrogen Regulates the Grain Yield, Antioxidant Attributes, and Nitrogen Metabolism in Fragrant Rice Grown Under Lead-Contaminated Soil

Journal of soil science and plant nutrition ◽

10.1007/s42729-020-00278-y ◽

2020 ◽

Vol 20 (4) ◽

pp. 2099-2111 ◽

Cited By ~ 1

Author(s):

Huoyi Feng ◽

Yuzhan Li ◽

Yangfan Yan ◽

Xinhang Wei ◽

Yihan Yang ◽

...

Keyword(s):

Grain Yield ◽

Nitrogen Metabolism ◽

Contaminated Soil ◽

Fragrant Rice

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Evaluation of prophylactic fungicide application timing on soybean (glycine max) grain yield, quality, and economic return in Mississippi

cftm ◽

10.1002/cft2.20102 ◽

2021 ◽

Author(s):

Chase Alan Floyd ◽

J Trent Irby ◽

Tom W. Allen ◽

Angus L. Catchot ◽

Darrin M. Dodds ◽

...

Keyword(s):

Glycine Max ◽

Grain Yield ◽

Economic Return ◽

Application Timing ◽

Fungicide Application ◽

Yield Quality

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Haplotype Loci Under Selection in Canadian Durum Wheat Germplasm Over 60 Years of Breeding: Association With Grain Yield, Quality Traits, Protein Loss, and Plant Height

Frontiers in Plant Science ◽

10.3389/fpls.2018.01589 ◽

2018 ◽

Vol 9 ◽

Cited By ~ 8

Author(s):

Amidou N’Diaye ◽

Jemanesh K. Haile ◽

Kirby T. Nilsen ◽

Sean Walkowiak ◽

Yuefeng Ruan ◽

...

Keyword(s):

Grain Yield ◽

Durum Wheat ◽

Plant Height ◽

Quality Traits ◽

Protein Loss ◽

Wheat Germplasm ◽

Yield Quality

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Effect of climate extremes on the grain yield and quality of cereals

Acta Agronomica Hungarica ◽

10.1556/aagr.58.2010.suppl.1.17 ◽

2010 ◽

Vol 58 (Supplement 1) ◽

pp. 115-120 ◽

Cited By ~ 2

Author(s):

S. Bencze ◽

K. Balla ◽

B. Varga ◽

O. Veisz

Keyword(s):

Grain Yield ◽

Grain Quality ◽

Agricultural Research ◽

Climate Extremes ◽

Yield Potential ◽

Extreme Weather Events ◽

Weather Events ◽

Long Term Experiment ◽

Yield Quality ◽

Grain Yield And Quality

A long-term experiment was started in 2005 in the Agricultural Research Institute to monitor the effects of extreme climatic events on the grain yield, quality and disease resistance of cereals. The yield was poor in 2007 due to the long dry period from autumn till spring, while it was high in 2006 and 2008 when there was more precipitation. The grain quality was the highest in 2007, however, despite the extreme weather events. Fungicide treatment generally resulted in higher yield potential and better grain quality in every year.

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Foliar application of sodium selenate induces regulation in yield formation, grain quality characters and 2-acetyl-1-pyrroline biosynthesis in fragrant rice

BMC Plant Biology ◽

10.1186/s12870-019-2104-4 ◽

2019 ◽

Vol 19 (1) ◽

Cited By ~ 2

Author(s):

Haowen Luo ◽

Bin Du ◽

Longxin He ◽

Axiang Zheng ◽

Shenggang Pan ◽

...

Keyword(s):

Carboxylic Acid ◽

Grain Yield ◽

Grain Quality ◽

Foliar Application ◽

Higher Plants ◽

Sodium Selenate ◽

Rice Varieties ◽

Fragrant Rice ◽

The Stability ◽

Heading Stage

Abstract Background Selenium (Se) is a beneficial element for higher plants and essential for mammals. To study the effect of the foliar application of sodium selenate on fragrant rice performance, a pot experiment was conducted in Guangdong, China. At the initial heading stage, one-time foliar application of sodium selenate with concentrations of 0, 10, 20, 30, 40 and 50 μmol·L− 1 (named CK, Se1, Se2, Se3, Se4 and Se5, respectively) were foliar applied on two fragrant rice varieties, ‘Meixiangzhan-2’ and ‘Xiangyaxiangzhan’. Results Selenate application at the initial heading stage not only improved the grain yield of fragrant rice by increasing the seed-setting rate and grain weight, but also promoted the grain quality by increasing crude protein contents and lowering the chalky rice rate. Furthermore, Se applications enhanced the biosynthesis of 2-acetyl-1- pyrroline (2-AP), the main aromatic compound, by increasing the contents of precursors (△1- pyrroline, proline and pyrroline-5-carboxylic acid (P5C)) and the activities of enzymes (proline dehydrogenase (PRODH), △1-pyrroline-5-carboxylic acid synthetase (P5CS), and ornithine aminotransferase (OAT)) in fragrant rice. The results also showed that foliar application of sodium selenate enhanced the antioxidant system of both varieties by promoting the activities of peroxidase (POD), superoxide dismutase (SOD), catalase (CAT) and reducing the contents of malondialdehyde (MDA). Furthermore, the real-time PCR analyses depicted that foliar application of selenate up-regulated the GPX1, GPX4 and CATC transcripts. The higher antioxidative enzymatic activities might strength the stress resistant to ensure the stability of yield in fragrant rice form abiotic stress. Conclusions Foliar applications of sodium selenate at the initial heading stage increased the grain 2-AP content by enhancing the biosynthesis-related enzymes and precursors. The grain yield and quality of fragrant rice also increased due to selenate application. Furthermore, foliar application of selenate promoted the activities of enzymes such as POD, SOD and CAT and up-regulated the expression of gene GPX4, GPX1 and CATC.

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Nitrogen Effects on Yield, Quality and Physiological Characteristics of Giant Rice

Agronomy ◽

10.3390/agronomy10111816 ◽

2020 ◽

Vol 10 (11) ◽

pp. 1816

Author(s):

Jisheng Zhang ◽

Tianyi Tong ◽

Pouwedeou Mouloumdema Potcho ◽

Suihua Huang ◽

Lin Ma ◽

...

Keyword(s):

Grain Yield ◽

Nitrogen Fertilizer ◽

Nitrogen Fertilizers ◽

Utilization Rate ◽

Rice Varieties ◽

Area Index ◽

Biological Yield ◽

Yield Quality ◽

Set Up ◽

High Level

In China, the quantity of nitrogen fertilizer applied is large, but as a consequence of a high level of loss, its utilization rate is low. Compared to common rice, the new giant rice has interesting characteristics, namely high biological yield and good efficient use of fertilizer. However, it becomes urgent to further consider the appropriate rate of nitrogen fertilizer to be applied. The giant rice varieties Feng5 and Feng6 were set up in a pot experiment and a field experiment under five doses of nitrogen fertilizers, namely, 0 kg·ha−1 (CK), 75 kg·ha−1 (T1), 150 kg·ha−1 (T2), 225 kg·ha−1 (T3) and 300 kg·ha−1 (T4). Parameters such as leaf area index (LAI), lodging index (LI), nitrogen utilization rate, photosynthesis rate and grain yield were measured. The results showed that with the increase of nitrogen dose in a certain range, LAI, plant height, the number of tillers, net photosynthetic rate (NPn), the transpiration rate (Tr), and the grain yield increased while the lodging index (LI), the nitrogen agronomic utilization rate (AE) and nitrogen partial productivity (PFPN) decreased. Additionally, with the increase of nitrogen application, the grain yield index (HI) and nitrogen contribution rate (FCRN) of rice presented a parabolic trend.

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