Relationship between Characteristics of Basal Internodes and Lodging and Its Physiological Mechanism in Dry-Cultivated Rice

Liu, Lijun; Wang, Kangjun; Ge, Li-Li; Fan, Miaomiao; Zhang, Zichang; Wang, Zhiqin

doi:10.3724/sp.j.1006.2012.00848

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…This is consistent with the results of this study. In this study, the removal of straw under conventional fertilization conditions reduced the strength of rice internodes, which may be due to its high alpha-amylase activity of internodes (Liu et al, 2012), resulting in low carbohydrate accumulation and low content, resulting in the arrangement of the tissue cells in the thick outer stem walls were loose (Zhang et al, 2016), lignification and silicification were reduced (Liu et al, 2018a), resulting in a reduction in the thickness of the stem wall, a reduction in the dry weight of the internodes and the deterioration of the stalk resistance.…”

Section: Relationship Between Rice Lodging Resistance and Plant Traitsmentioning

confidence: 77%

Effects of continuous straw return and fertilization on rice lodging resistance

Zhao

Xin

Liu

et al. 2022

Chil. j. agric. res.

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As a common problem in rice (Oryza sativa L.) production, lodging will not only increase harvest costs and reduce rice production, but also affect rice taste seriously and reduce its commercial value. There is still a lack of systematic research on the effect of lodging resistance of rice after returning wheat (Triticum aestivum L.) straw to the field. The study evaluated the effects of continuous straw returning and different fertilizer input levels on the lodging resistance of rice stalks based on years of experiments, using a split zone design with two factors including full return of straw to the field and straw removal, and three fertilization levels (conventional fertilization, 50% of conventional fertilization and no fertilization) under each factor, for a total of six treatments. Results suggested that under the same level of chemical fertilizer application, treatments of straw returning significantly increased stalk flexural resistance up to 33.74% as well as decreased the lodging index by a maximum of 33.86% compared with straw removal. Decrease of chemical fertilizer application increased significantly stalk flexural resistance, while decreased significantly lodging index. Rice plant height, center of gravity height, internode length, stem wall thickness and internode dry weight were main factors that influence rice lodging resistance. Compared with straw removal, straw returning combined with chemical fertilizers applying could significantly increase rice yield up to 19.62%. The increase in rice yield increased the risk of rice lodging. The continuous return of straw to the field combined with the application of chemical fertilizers reduced the risk of rice lodging to a certain extent, and meanwhile it achieved successive annual increase in rice production, which has a good promotion prospect.

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Section: Relationship Between Rice Lodging Resistance and Plant Traitsmentioning

confidence: 77%

Effects of continuous straw return and fertilization on rice lodging resistance

Zhao

Xin

Liu

et al. 2022

Chil. j. agric. res.

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“…This was consistent with the above‐mentioned response results of in situ pushing resistance and internode breaking resistance (Table 2). Therefore, rice field management strategies should be adjusted, such as increasing the application of silicon fertilizer (Chen et al., 2016; Liu et al., 2012) and alternating dry and wet irrigation (H. Zhang et al., 2008), in the future with high O 3 concentrations to promote the photoassimilate accumulation of stem in the middle growth stage of rice, thus enhancing lodging resistance of stems under O 3 stress.…”

Section: Discussionmentioning

confidence: 99%

Impacts of ozone stress on stem lodging characteristics of different indica and japonica rice cultivars

Shao

Zhang

et al. 2023

Crop Science

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Ozone (O 3 ) stress inhibits rice growth and development, resulting in yield loss and poor quality. However, the effect of ozone stress on the lodging resistance of rice stems has scarcely been reported. In this study, three indica rice cultivars and three modern japonica rice cultivars were treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb). The influence of O 3 stress on lodging resistance was investigated in 2016 and 2017. Ozone stress reduced the in situ pushing resistance of intact plants by 40% and single stems by 32.0%. The breaking resistance of the third, fourth, and fifth internodes from the top of the rice stem was, respectively, reduced by 24.0%, 25.1%, and 33.6%, on average. The O 3 -induced reduction in the basal internode morphological characteristics was associated with the reduced cross-sectional area, maximum and minimum stem diameter, dry weight per unit length, length, dry weight, and culm wall thickness. Among these characteristics, the largest reduction was exhibited by internode dry weight (−43.1%), while the lowest reduction was observed for culm wall thickness (−9.7%). The O 3 induced a significantly higher reduction in basal internode characteristics of indica compared with the japonica rice, with a larger effect in the lower internode than the upper internode, indicating a significant interaction between O 3 and rice cultivar and internode position. Statistical analysis revealed a significant positive linear correlation between the response of in situ pushing resistance of rice under O 3 stress and the response of basal internode breaking resistance, cross-sectional area, and dry weight per unit length. Ozone stress significantly reduced the lodging resistance in the rice stem, which is primarily associated with the thinning and poor filling of the basal internodes, and the O 3 impacts varied with cultivars and internode positions, but were similar between the two years. These results provide a scientific reference for the study of lodging resistance regulation of rice under high O 3 concentrations.

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“…This variable is an important spatial heterogeneity trait as well as a spatial correlation indicator. The strength of spatial interaction therefore reflects the inter-regional links of material, capital, population, information, and knowledge (Liu et al, 2019) and has been incorporated into research on land use/cover (Seto et al, 2012;Silveira and Dentinho, 2018;Ma et al, 2019), as well as urban structures and functions He et al, 2017), urbanization (Xu et al, 2017;Liu et al, 2019), and transportation (Kerkman et al, 2017). Population flow is one of the most important indicators of the intercity spatial interactions.…”

Section: Introductionmentioning

confidence: 99%

“…Population flow is one of the most important indicators of the intercity spatial interactions. This variable can also be used to study city attractiveness, regional socioeconomic development patterns, and, most recently, urbanization in China (Liu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Visualization and analysis of local and distant population flows on the Qinghai-Tibet Plateau using crowd-sourced data

Liu

et al. 2021

J. Geogr. Sci.

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Human migration between cities is one important aspect of spatial interaction that not only reflects urban attractiveness but also denotes interactions amongst agglomerations. We therefore implemented a web-based visualization system to analyze and interactively explore local and distant population flow patterns between cities on the Qinghai-Tibet Plateau (QTP). We utilized 2017 Tencent population flow data from which we initially constructed inbound and outbound vectors for cities on the QTP. We then used multidimensional scaling to examine and visualize migration patterns and similarities between cities. Results reveal the presence of six local and three distant human mobility patterns on the QTP as well as average summer monthly migrations more than twice the level of those in the winter.

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Relationship between Characteristics of Basal Internodes and Lodging and Its Physiological Mechanism in Dry-Cultivated Rice

Cited by 5 publications

References 19 publications

Effects of continuous straw return and fertilization on rice lodging resistance

Effects of continuous straw return and fertilization on rice lodging resistance

Impacts of ozone stress on stem lodging characteristics of different indica and japonica rice cultivars

Visualization and analysis of local and distant population flows on the Qinghai-Tibet Plateau using crowd-sourced data

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