Source/sink ratio and the relationship between maximum water content, maximum volume, and final dry weight of maize kernels

2007 ◽  
Vol 101 (1) ◽  
pp. 19-25 ◽  
Author(s):  
Rodrigo G. Sala ◽  
Mark E. Westgate ◽  
Fernando H. Andrade
Keyword(s):  
Water Content ◽  
Dry Weight ◽  
Maximum Volume ◽  
Maximum Water ◽  
Source Sink ◽  
Maize Kernels ◽  
The Relationship ◽  
Maximum Water Content

Water loss dynamics in maize hybrids with different genotypes

2005 ◽  
Vol 53 (2) ◽  
pp. 153-159 ◽  
Author(s):  
A. C. Dobos ◽  
G. Szabó
Keyword(s):  
Water Content ◽  
Water Loss ◽  
Environmental Parameters ◽  
Close Correlation ◽  
Water Dynamics ◽  
Maize Production ◽  
Grain Moisture ◽  
Maximum Water ◽  
The Individual ◽  
Maximum Water Content

Tests were made on the water dynamics of water loss in maize at two locations at major maize production areas, Debrecen and Szeged, as a function of the heat sum required up to physiological ripening. The maximum water content was found to vary according to the hybrid and the year. No significant differences were found between the effective heat sums associated with maximum values within a year, the difference being 2-4 calendar days. There was a close correlation between the maximum grain water content and the length of the generative phase for a given hybrid in a given year. Better water supplies (1998) resulted in higher maximum water content values, which indirectly promoted longer and more intensive dry matter incorporation. Of all the environmental parameters, the drying down rate is primarily determined by the temperature. The changes in grain moisture content in a specific hybrid can be characterised by a joint linear graph. The drying down rate of the individual hybrids was determined by examining the b term of the linear equation.

Study of Water Stability of AC and SMA Asphalt Mixture Based on Water Content

2012 ◽  
Vol 457-458 ◽  
pp. 435-438
Author(s):  
Xue Dong Guo ◽  
Cao Jian ◽  
Xiang Yang Fang
Keyword(s):  
Tensile Strength ◽  
Water Content ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Splitting Tensile Strength ◽  
Water Stability ◽  
Paper Study ◽  
Saturated Condition ◽  
Maximum Water ◽  
Maximum Water Content

In this paper，study water content and water stability of AC and SMA asphalt mixtures, and reach the following conclusions. In the normal saturated condition, the maximum water content of AC and SMA asphalt mixture is 0.28% and 0.32%.And in the vacuum saturated condition, the maximum water content of AC and SMA asphalt mixture is 0.8% and 0.78%.The water of AC and SMA asphalt mixture separately take 8 days and 9 days to drain completely in the normal saturated condition. But in the vacuum saturated condition, the time is more than two months. In different water content conditions, the splitting tensile strength of AC asphalt mixture is 0%> 100%> 25%> 75%> 50%.But the splitting tensile strength of SMA asphalt mixture is 0%> 100%> 25%> 50%> 75%.

Evidence from feldspar compositions of high temperatures in granite sheets in the Scourian complex, N.W. Scotland

1982 ◽  
Vol 46 (338) ◽  
pp. 73-76 ◽  
Author(s):  
Hugh R. Rollinson
Keyword(s):  
Critical Temperature ◽  
Water Content ◽  
Bulk Composition ◽  
Alkali Feldspar ◽  
Granulite Facies ◽  
Granulite Facies Metamorphism ◽  
Critical Composition ◽  
Facies Metamorphism ◽  
Maximum Water ◽  
Maximum Water Content

AbstractMesoperthite feldspars from hypersolvus granites, with granulite-facies mineralogy from the Scourian complex, N.W. Scotland have an average bulk composition of (Ab0.58Or0.42)88An12. The mesoperthites have an Ab/Or ratio close to the critical composition of the alkali feldspar solvus for anorthite-free compositions. The critical temperature of the ternary feldspar solvus is estimated at high anorthite contents and used to indicate a temperature in excess of 1000°C for the crystallization of the granite sheets prior to granulite-facies metamorphism and permits a maximum water content in the melt of 1%.

Uing DSC Technology for Water Content and Thermal Properties Analysis of Carassius Organs

2011 ◽  
Vol 374-377 ◽  
pp. 1050-1053
Author(s):  
Peng Zeng ◽  
Tian Ji Chen ◽  
Jiang Shen
Keyword(s):  
Heat Capacity ◽  
Thermal Properties ◽  
Specific Heat ◽  
Water Content ◽  
Freezing Temperature ◽  
Maximum Water ◽  
Temperature Equilibrium ◽  
Freeze Water ◽  
Ventral Muscle ◽  
Maximum Water Content

Thermal properties of Brain, gill, hepatopancreas, muscle and blood of Carassius living in 8°C were investigated by differential scanning calorimeter. Between 20°C～-40°C , blood showed lower specific heat capacity than other organs. It might help temperature equilibrium in organism. Blood and brain had higher freezing temperature. Brain showed the maximum water content but less freeze water while ventral muscle had the lowest water content but high freeze-able water. Hepatopancreas had both low water and freeze-able water content.

Influence of cultural practices on the relationship between frost tolerance and water content of containerized black spruce, white spruce, and jack pine seedlings

1993 ◽  
Vol 23 (3) ◽  
pp. 503-511 ◽  
Author(s):  
Sophie Calmé ◽  
Hank A. Margolis ◽  
Francine J. Bigras
Keyword(s):  
Water Content ◽  
Cultural Practices ◽  
Black Spruce ◽  
Dry Weight ◽  
White Spruce ◽  
Frost Tolerance ◽  
Jack Pine ◽  
Bud Formation ◽  
The Relationship ◽  
Short Days

Two experiments were performed to study how cultural practices influenced the relationship between frost tolerance and water content of black spruce (Piceamariana (Mill.) B.S.P.), white spruce (Piceaglauca (Moench) Voss), and jack pine (Pinusbanksiana Lamb.) seedlings. In the first experiment, first-year black spruce seedlings were subjected to 14-d mid-August treatments of short days of 8 h or to natural day length, during which time seedlings were either irrigated or not. In the second experiment, first-year white spruce, black spruce, and jack pine seedlings were fertilized at two levels, normal or double, during the growing season. In the fall, we followed the evolution of frost tolerance, water content (dry weight to fresh weight ratio), height and diameter growth, bud formation, and mineral concentrations of shoots and roots. In the first experiment, short days accelerated frost acclimation, drop in water content, and bud formation. Short days with no irrigation triggered the cessation of height growth. In the second experiment, normal fertilization slightly improved frost tolerance in white spruce. Diameter growth (except for white spruce) and bud formation were enhanced by high nitrogen concentration, whereas no significant effect of fertilization could be found on height growth and water content. In both experiments, the relationship between frost tolerance and water content was independent of treatments and indicated that nontolerant seedlings (lethal temperature for 50% of the seedlings > −10 °C) had dry weight to fresh weight ratios of less than 30% for the three species. Thus, this rapid method of evaluating frost tolerance could be useful to seedling producers in eastern Canada and might be applicable to other species in other regions as well.

scholarly journals Branches and Leaves Growth Patterns in Myricaria laxiflora Remnant Populations Are Affected by Human-altered Water Level Fluctuations

2020 ◽  
Author(s):  
Shoupeng Guan ◽  
Fang-Qing Chen ◽  
Jumei Zhou ◽  
Yongwen Huang ◽  
Dayong Fan
Keyword(s):  
Water Content ◽  
Water Level ◽  
Plant Height ◽  
Growth Traits ◽  
Leaf Growth ◽  
Water Level Fluctuations ◽  
Middle Region ◽  
Lower Region ◽  
Maximum Water ◽  
Maximum Water Content

Abstract Background: The construction of the Three Gorges-Gezhou Dam altered the water level fluctuation pattern in the downstream habitat of the endangered species Myricaria laxiflora. This study investigated how branch and leaf growth traits of M. laxiflora remnant populations changed to adapt the environmental stress caused by human-altered water level fluctuations.Results:Due to such disturbance, branch and leaf growth traits of M. laxiflora populations exhibited significant differences across water level conditions. The number of secondary branches, plant height, and leaf number of the plants in the upper area of the habitat were significantly higher than that in the middle and lower river bank areas. The longest secondary branch length of the plants in the upper and middle region was significantly higher than that in the lower region. The branch and leaf volume of plants in the middle region was significantly higher than that in the upper and lower region. The maximum water content of plants in the middle and lower region was significantly higher than that in the upper region. Principal component analysis showed that the branch and leaf traits of plants changed with decreasing water level toward to decreasing plant height, leaf number and the number of secondary branches, and increasing maximum water content of branch and leaves. Conclusions: The phenotypic plasticity of M. laxiflora plants in branch and leaf growth traits alleviates the impacts of human-regulated water level fluctuations. However, the above ground growth of M. laxiflora plants distributed at the middle and lower areas of the fluctuation zone is still negatively affected.

scholarly journals Hydrophilic Polymers and Wetting Agents Affect Absorption and Evaporative Water Loss

HortScience ◽  
1993 ◽  
Vol 28 (6) ◽  
pp. 633-635 ◽  
Author(s):  
Allyson M. Blodgett ◽  
David J. Beattie ◽  
John W. White ◽  
George C. Elliott
Keyword(s):  
Water Absorption ◽  
Water Content ◽  
Water Loss ◽  
Hydrophilic Polymers ◽  
Wetting Agent ◽  
Hydrophilic Polymer ◽  
Evaporative Water ◽  
Maximum Water ◽  
Maximum Water Content ◽  
Container Capacity

A plantless system using subirrigation was developed to measure water absorption and loss in soilless media amended with hydrophilic polymers, a wetting agent, or combinations of these amendments. Peat-perlite-vermiculite and bark-peat-perlite controls achieved 67% and 52% of container capacity, respectively, after 20 daily irrigation cycles. Maximum water content of amended media was 78% of container capacity. Adding only a hydrophilic polymer did not increase total water content significantly. Adding a wetting agent increased water absorption in both media. However, when hydrophilic polymer and wetting agent were present, the medium absorbed more water than with wetting agent alone. More extractable water was removed from media containing wetting agent. Water loss rate by evaporation was not affected significantly by medium, hydrophilic polymer, wetting agent, or any combination of these variables.

scholarly journals Analisis Sandcone Test (AASHTO T 191 dan ASTM D 1556 64) Pada Peningkatan Jalan Jepara – Kedungmalang – Pecangaan

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Yayan Adi Saputro ◽  
Khotibul Umam ◽  
Shiska Fauziah
Keyword(s):  
Water Content ◽  
Optimum Moisture Content ◽  
Dry Density ◽  
Building Structure ◽  
The Road ◽  
Central Java ◽  
Maximum Water ◽  
The Difference ◽  
Test Result ◽  
Maximum Water Content

Concrete road works on the improvement of the Jepara - Kedungmalang - Pecangaan road are the activities of the Publick Works Department of Highways in Central Java Province. Quality control in a building structure work is very important to support the strength of the structure. In planning the road structure, it is necessary to have density of soil and foundation layers that meet the requirements. To get the value of the degree of density that is from the sandcone test where in the sandcone test there are several standart methods or references for example from AASHTO T 191 and ASTM D 1556 - 64. In this study the aims is to obtain the value of the degree of density, how big is the difference between the AASHTO T 191 standart and ASTM D 1556 - 64, and know the water content. From the test result, the optimum moisture content value is 6.5%, dry density is 2.17gr/cm3, the value of the degree of density mostly ranges from ">100%, and the minimum water content value is 5.00% maximum water content is 6.7%.

scholarly journals The Influence of the Hatching Factor on the Water Uptake of the Second Stage Larva of the Potato Cyst Nematode Heterodera Rostochiensis

1976 ◽  
Vol 64 (1) ◽  
pp. 141-147
Author(s):  
C. ELLENBY ◽  
R. N. PERRY
Keyword(s):  
Water Content ◽  
Water Uptake ◽  
Tap Water ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Interference Microscopy ◽  
Second Stage ◽  
Maximum Water ◽  
Heterodera Rostochiensis ◽  
Maximum Water Content

1. Larvae-containing eggs of the potato cyst nematode were soaked in root diffusate in artificial tap water or in artificial tap water alone. In one experiment, the eggs were still contained in intact cysts; in another experiment they were in a halved cyst. 2. Eggs were ruptured after 0–5 days treatment and the water content of the liberated larvae immediately estimated by interference microscopy. 3. Larvae from treated eggs from both the halved and intact cysts had a higher water content than controls. 4. Larvae liberated from treated eggs from the halved cyst reached their maximum water content after 24 h treatment; those from intact cysts attained the same value after 2 days. The delay, for the intact cyst, is in keeping with the hatching response for intact cysts and supports the view that the results for water content are due to the activity of the hatching factor. 5. Reasons are advanced for the view that the hatching factor may work via a neurosecretory mechanism.

Sign in / Sign up

Export Citation Format

Share Document