Diagnosis of Nitrogen Nutrition in Rice Leaves Influenced by Potassium Levels

Hou, Weiyan; Tränkner, Merle; Lu, Jianwei; Yan, Jinyao; Huang, Siyuan; Ren, Tao; Cong, Rihuan; Li, Xiaokun

doi:10.3389/fpls.2020.00165

Cited by 29 publications

(21 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The leaf area was determined by using the photos of the leaves of each treatment in Adobe Photoshop CC2019 software (Adobe Systems, San Jose, CA, USA) [20]. Specific leaf weight (SLW) is the ratio of leaf dry mass to leaf area [21], and specific leaf area (SLA) is the ratio of leaf area to leaf dry mass [22].…”

Section: Measurement Of Plant Growth and Leaf Traitsmentioning

confidence: 99%

Low Light Alters the Photosynthesis Process in Cigar Tobacco via Modulation of the Chlorophyll Content, Chlorophyll Fluorescence, and Gene Expression

Khan

Gao

et al. 2021

Agriculture

View full text Add to dashboard Cite

Shading or low light (LL) conditions are a key and necessary cultivation technique in cigar wrapper tobacco production. However, the effect of low light on the photosynthesis in cigar tobacco is not clear. Therefore, this study is designed to know the photosynthesis of cigar tobacco under different light intensities (T200, T100, and T50 μmol m−2 s−1). The results reveal that under low light, T50 especially improved the light interception and increased carbon utilization, as witnessed by a higher specific leaf area and lower specific leaf weight. Low light intensity caused better light interception and carbon utilization in cigar tobacco leaves, and thus thinner leaves are more able to use low light efficiently. The chlorophyll content is related to the photosynthesis process; thus, LL affected the photosynthesis process by lowering the chlorophyll content. Similarly, LL also altered the photosynthetic efficiency by lowering the QY_Lss, qP_Lss, and Rfd_Lss. Additionally, higher expression of Lhcb4.2, Lhcb6, PsbA, PsbB, and PsbD under low light, especially T50, shows that the PSII and antenna proteins complex efficiently utilized the absorbed energy for photosynthesis. Finally, the lower photosynthesis, particularly in T50, is attributed to the downregulation of genes related to NADPH production (petH) and the rubisco enzyme synthesis-related gene (rbcs) for CO2 fixation in the Calvin cycle. Overall, the results show that the photosynthesis is decreased under LL intensities which might be related to lower chlorophyll content and downregulation of petH and rbcs genes.

show abstract

Section: Measurement Of Plant Growth and Leaf Traitsmentioning

confidence: 99%

Low Light Alters the Photosynthesis Process in Cigar Tobacco via Modulation of the Chlorophyll Content, Chlorophyll Fluorescence, and Gene Expression

Khan

Gao

et al. 2021

Agriculture

View full text Add to dashboard Cite

show abstract

“…According to Hou et al (2020), N concentrations declined sharply with increased K rates due to the antagonistic relationships between K + and NH 4 . Further, they explained that it was also probable that the increase in K promoted the growth of leaves and diluted N concentrations in rice leaves.…”

Section: Discussionmentioning

confidence: 99%

Biofertilizer: Azolla pinnata in-combination with Inorganic Fertilizer on Growth and Yield of Rice

Khair¹,

Azman²,

Ismail³

et al. 2021

Preprint

View full text Add to dashboard Cite

A study was conducted at MARDI Seberang Perai, Penang. This study aims to examine Azolla pinnata on the growth and performance of the MR 297 variety. The experiment consisted of five treatments; PK + Azolla (T1); NP + Azolla (T2); NK + Azolla (T3); NPK-Control (T4), and Azolla only (T5). Each treatment has four replications. The experimental design used was a complete randomized block design (RCBD), and all data collected were analyzed using one-way ANOVA with a statistically significant 0.05% test. For the average soil analysis between the beginning and end, all soil analyses showed decreased soil properties except Total N (%) and organic carbon (%). Treatment has a significant influence on the tiller number, the number of panicles, and the yield per pot. There is a significant influence on treatment on plant height and SPAD value in crop growth performance. There was no significant effect on N and P in plant nutrients. In contrast, there was a significant treatment effect on K. This study showed that Azolla could be used as an alternative fertilizer on rice fields because the soil treated with NK + Azolla shows a comparable result with soil treated with inorganic fertilizer without Azolla on the total yield.

show abstract

“…According to Hou et al (2020), N concentrations decline sharply with increased K rates due to the antagonistic relationship between K + and NH4. Further, they explained that it was also probable that the increase in K promoted the growth of leaves and diluted N concentrations in rice leaves.…”

Section: Discussionmentioning

confidence: 99%

The Sustainable Use of Natural Resources in Rural Areas of Ukraine: The Governance Challenge

Hohol¹,

Nedilska²

2021

GJNR

View full text Add to dashboard Cite

This article describes the evolution of the regulatory framework for sustainable development in Ukraine based on ratified international treaties and supports the formation of an appropriate legal framework and State policy. The formation of regulatory mechanisms for sustainable developmental goals in Ukraine are aimed at strengthening and ensuring the fair implementation of the citizen’ rights as guaranteed by the Constitution of Ukraine. It also relates to the property rights of the Ukrainian people to land, its bowels, atmospheric air, water and other natural resources within the territory, the natural resources of the continental shelf and the exclusive (marine) economic zone, if the rural areas exist in coastal zones. Since the local officials play a key role in implementing sustainable practices in forestry, fisheries, water management, agriculture and tourism, they can execute capacity building, address the needs of various sectors, promote locally produced sustainable produce, implement incentive schemes, and enforce the regulations and management practices. They can also promote and propagate the economic benefits from the conserved resources to rural constituencies. The local governments can also better manage and mitigate the disasters through maintaining and restoring the ecosystems.

show abstract

Diagnosis of Nitrogen Nutrition in Rice Leaves Influenced by Potassium Levels

Cited by 29 publications

References 70 publications

Low Light Alters the Photosynthesis Process in Cigar Tobacco via Modulation of the Chlorophyll Content, Chlorophyll Fluorescence, and Gene Expression

Low Light Alters the Photosynthesis Process in Cigar Tobacco via Modulation of the Chlorophyll Content, Chlorophyll Fluorescence, and Gene Expression

Biofertilizer: Azolla pinnata in-combination with Inorganic Fertilizer on Growth and Yield of Rice

The Sustainable Use of Natural Resources in Rural Areas of Ukraine: The Governance Challenge

Contact Info

Product

Resources

About