scholarly journals Physiological Response to Salinity in Rice Plant. II. Relationship of sodium exclusion to transpiration and root-respiration rates in NaCl-treated rice plant.

1994 ◽  
Vol 63 (2) ◽  
pp. 320-325 ◽  
Author(s):  
Hitoshi NAITO ◽  
Mikio TSUCHIYA ◽  
Seiichi KUMANO
Keyword(s):  
Physiological Response ◽  
Rice Plant ◽  
Root Respiration ◽  
Respiration Rates ◽  
Relationship Of ◽  
Sodium Exclusion

scholarly journals LeNRT1.1 Improves Nitrate Uptake in Grafted Tomato Plants under High Nitrogen Demand

2018 ◽  
Vol 19 (12) ◽  
pp. 3921 ◽  
Author(s):  
Francisco Albornoz ◽  
Marlene Gebauer ◽  
Carlos Ponce ◽  
Ricardo Cabeza
Keyword(s):  
Plasma Membrane ◽  
Root Respiration ◽  
Nitrate Uptake ◽  
N Uptake ◽  
Uptake Capacity ◽  
Tomato Plants ◽  
Respiration Rates ◽  
Assimilation Capacity ◽  
N Demand ◽  
Root Plasma Membrane

Grafting has become a common practice among tomato growers to obtain vigorous plants. These plants present a substantial increase in nitrogen (N) uptake from the root zone. However, the mechanisms involved in this higher uptake capacity have not been investigated. To elucidate whether the increase in N uptake in grafted tomato plants under high N demand conditions is related to the functioning of low- (high capacity) or high-affinity (low capacity) root plasma membrane transporters, a series of experiments were conducted. Plants grafted onto a vigorous rootstock, as well as ungrafted and homograft plants, were exposed to two radiation levels (400 and 800 µmol m−2 s−1). We assessed root plasma membrane nitrate transporters (LeNRT1.1, LeNRT1.2, LeNRT2.1, LeNRT2.2 and LeNRT2.3) expression, Michaelis‒Menten kinetics parameters (Vmax and Km), root and leaf nitrate reductase activity, and root respiration rates. The majority of nitrate uptake is mediated by LeNRT1.1 and LeNRT1.2 in grafted and ungrafted plants. Under high N demand conditions, vigorous rootstocks show similar levels of expression for LeNRT1.1 and LeNRT1.2, whereas ungrafted plants present a higher expression of LeNRT1.2. No differences in the uptake capacity (evaluated as Vmax), root respiration rates, or root nitrate assimilation capacity were found among treatments.

Insitu needle and fine root respiration in mature slash pine (Pinuselliottii) trees

1991 ◽  
Vol 21 (11) ◽  
pp. 1589-1595 ◽  
Author(s):  
Wendell P. Cropper Jr. ◽  
Henry L. Gholz
Keyword(s):  
Time Series ◽  
Fine Roots ◽  
Root Respiration ◽  
Fine Root ◽  
Time Of Day ◽  
Slash Pine ◽  
Chamber System ◽  
North Central ◽  
Central Florida ◽  
Respiration Rates

Respiration of needles and surface fine roots was measured in a north central Florida slash pine (Pinuselliottii Engelm. var. elliottii) plantation. A controlled temperature chamber system was used to estimate respiration rates and Q10 values of insitu tissues over a range of 10 to 35 °C. Respiration rates did not differ significantly among seasons, fertilized versus unfertilized plots, or time of day in a diurnal time series (needles). Needle respiration from the lower canopy was less than that from the upper canopy. Fine root respiration measurements were consistent with previously made estimates based on soil CO2 partitioning and trenched plots.

Soil respiration in the seasonally dry tropics near Townsville, North-Queensland

Soil Research ◽  
1990 ◽  
Vol 28 (5) ◽  
pp. 737 ◽  
Author(s):  
JA Holt ◽  
MJ Hodgen ◽  
D Lamb
Keyword(s):  
Soil Respiration ◽  
Root Respiration ◽  
Respiratory Activity ◽  
Major Effect ◽  
Wet Season ◽  
Untreated Soil ◽  
Seasonally Dry ◽  
Respiration Rates ◽  
Dry Tropics ◽  
Total Soil Respiration

The contribution of root respiration to total soil respiration has been examined in an Australian tropical semi-arid woodland. Respiration rates were estimated by measuring CO2 released from untreated soil and from soil where roots had been severed and were extensively decomposed. The amount of C released as CO2 by soil respiration was estimated to be 3800 kg ha-1 year-1, and by root respiration to be 1500 kg C ha-l year-1. Soil moisture was found to have a major effect on soil respiration, with temperature being less significant. Consequently, most respiratory activity in the soil was confined to the relatively short wet season, with respiration rates being much lower during the dry season.

scholarly journals Agronomic and Physiological Response of Rice Plant to Application of Silica from Different Sources

2020 ◽  
pp. 26-33
Author(s):  
Indra Dwipa ◽  
Ryan Budi Setiawan ◽  
Irfan Suliansyah ◽  
Dedi Azwardi
Keyword(s):  
Physiological Response ◽  
Rice Plant ◽  
Agricultural Research ◽  
Silica Source ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Different Sources ◽  
Screen House ◽  
Range Test ◽  
Physiological Characters

Aims: The research aimed to study the response of agronomy and physiology of rice plant to different silica sources. Study Design:  Completely randomized design. Place and Duration of Study: The research was conducted in screen house of Faculty of Agriculture, Andalas University, Padang, Indonesia from April to December 2018. Methodology: Completely randomized design was used in the assay. The treatment was 10 Si sources (No silica, Si 1 ppm, Si 2 ppm, Si 3 ppm, husk charcoal 50 g/plant, husk charcoal 100 g/plant, husk charcoal 150 g/plant, husk ash 50 g/plant, husk ash 100 g/plant, husk ash 150 g/plant). The variety was Anak Daro. Each treatment was replied 3 times so that 30 experimental units were obtained. The data was analysed by using F test in 5% and followed by Duncan’s Multiple Range Test (DNMRT) in 5%. The data analysis using software Statistic Tool for Agricultural Research (STAR). Results: Silica sources affected the agronomic and physiological characters of rice plant. 2,3 ppm of silica, 100 and 150 g of husk charcoal and 100 g of husk ash were the best silica source for plant height. 3 ppm silica affected the number of tiller of rice plant. In number of chlorophyll, 150 g of husk ash affected the number of chlorophyll A and the silica sources did not affect the number of chlorophyll B. Conclusion: The sources of silica affected the agronomic and physiological response of rice plant which can be useful for rice cultivation in the region.

scholarly journals Physiological Response of 'Segreng' Rice Plant (Oryza sativa L.) to Biogas Sludge at Wukirsari Village, Cangkringan, Sleman

2018 ◽  
Vol 7 (1) ◽  
pp. 21-26
Author(s):  
Dwi Umi Siswanti ◽  
Nindy Senissia Asri ◽  
Mifta Arlinda ◽  
Arianda Poetri Shofia Rochman ◽  
Akrima Syahidah
Keyword(s):  
Chlorophyll Content ◽  
Vegetative Growth ◽  
Physiological Response ◽  
Rice Plant ◽  
Rice Field ◽  
Yellow River ◽  
Growth Parameters ◽  
Organic Fertilizer ◽  
Optimum Dose ◽  
Field Scale

Wukirsari Village, Cangkringan District is belong to Merapi Mountain’s slopes which located between the Gendol River and Yellow River. Nowadays, we faced the problem of anorganic fertilizer overused such as Urea, ZA, TSP/SP-36 and KCl in agriculture land. The effort to return the soil organic compound can be done by added some organic compounds or microbial bio -organic fertilizer. Sludge is fermented biodigester yield and it has lost its gas. The aim of this research was to understand the physiological response and optimum dose of biogas as planting medium to ‘Segreng’ Rice planted in the rice field of Wukirsari Village, Cangkringan District, Sleman Regency. This research was done on greenhouse scale and rice field scale. The treatment given on 0; 1; 1,5; 2 and 2,5 liters per 100 m2 of rice field areas, and given on 0; 4; 8; 12; and 24 ml per 5 kg soil on polybags. Data were taken in three repetitions. The vegetative growth parameters included plant height, number of leaves, number of seedlings and chlorophyll content, while generative growth parameters measured included NRA levels, dried biomass including crown/stem, roots, filled grains, empty grains, and total weight and number of filled grains, empty rains, and the number of panicles. The result were tested with ONE WAY ANOVA (Analysis of Variance) with SPSS version 19 for Windows and followed by Duncan's Multiple Range Test with 95% significance level (α = 0.05). Generally, the result showed that biogas sludge can increase the vegetative and generative growth of rice plant ‘Segreng’ on polybag scale and rice field scale. The rice plant on polybag with 4 ml biogas sludge was significantly different on the vegetative growth and chlorophyll content, while the rice plant on polybag with 8 ml biogas sludge was significantly different on the generative growth and NRA levels.

scholarly journals Respon Fisiologis Domba Ekor Tipis Terhadap Waktu Pemberian Pakan Yang Berbeda

2021 ◽  
Vol 2 (1) ◽  
pp. 33-39
Author(s):  
Gayuh Syaikhullah ◽  
M. Adhyatma ◽  
Himmatul Khasanah
Keyword(s):  
Heart Rate ◽  
Respiration Rate ◽  
Rectal Temperature ◽  
Physiological Response ◽  
Body Weight Gain ◽  
Feeding Time ◽  
Randomized Design ◽  
Daily Body Weight ◽  
Relationship Of ◽  
The Relationship

This study aimed to examine the relationship of feeding time on physiological response and the effect on the behavior of Javanese thin-tailed sheep. The total population of the study was 12 sheep. The treatment in this study is feeding time in the morning (W1) and evening (W2). Parameters that had been observed were heart rate, respiration rate, rectal temperature. This research design used was a completely randomized design. Feeding at different times did not affect daily body weight gain. However, feeding at different times affects the physiological response of thin tail sheep. W1 has a higher heart rate value at daytime of 80.65 ± 3.49 but has a lower value in the afternoon at 75.26 ± 4.20. Respiration rates W1 in the morning and evening were 32.06 ± 2.69 and 51.88 ± 3.43. Rectal temperature W1 lower in the morning at 37.76 ± 0.05. Physiological response of thin tail sheep which were fed with different feeding times indicated that the heart rate, respiration rate, and rectal temperature were still in normal condition.

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