scholarly journals Combined Soil Physical Stress of Soil Drying, Anaerobiosis and Mechanical Impedance to Seedling Root Growth of Four Crop Species

2007 ◽  
Vol 10 (4) ◽  
pp. 451-459 ◽  
Author(s):  
Morio Iijima ◽  
Junko Kato ◽  
Ayano Taniguchi
Keyword(s):  
Root Growth ◽  
Mechanical Impedance ◽  
Physical Stress ◽  
Soil Drying ◽  
Crop Species ◽  
Seedling Root

Root Response to Water Stress in Rainfed Lowland Rice

1990 ◽  
Vol 26 (3) ◽  
pp. 287-296 ◽  
Author(s):  
M. Thangaraj ◽  
J. C. O'Toole ◽  
S. K. De Datta
Keyword(s):  
Root Growth ◽  
Root Length ◽  
Root Length Density ◽  
Soil Layer ◽  
Sprinkler Irrigation ◽  
Mechanical Impedance ◽  
Field Studies ◽  
Soil Drying ◽  
Rainfed Lowland ◽  
Response To Water

SUMMARYThe relation between soil mechanical impedance as a result of soil drying, and root system growth (mass and length density) of rice was investigated in greenhouse and field studies. In a greenhouse experiment, soil drying for 16 days increased mechanical impedance in the 0–20 cm soil layer from near 0 to 2.5 MPa, and decreased root growth by 47% compared to the continuously flooded control. Root length density decreased with decreasing soil moisture and increasing soil mechanical impedance. In a lowland field experiment using a sprinkler irrigation gradient treatment for 19 days during the vegetative growth stage, soil mechanical impedance as low as 0.01 MPa inhibited root growth while values greater than 0.3–0.5 MPa decreased root growth and extension by 75%. The relative loss of potential root growth was continued after reflooding. Root length density, measured at flowering, was linearly related to yield.

Mechanical Impedance and corn Seedling Root Growth

1962 ◽  
Vol 26 (4) ◽  
pp. 319-322 ◽  
Author(s):  
R. E. Phillips ◽  
Don Kirkham
Keyword(s):  
Root Growth ◽  
Mechanical Impedance ◽  
Seedling Root ◽  
Corn Seedling

ABA regulation of root growth during soil drying and recovery can involve auxin response

2021 ◽  
Author(s):  
Qian Zhang ◽  
Wei Yuan ◽  
Qianwen Wang ◽  
Yiying Cao ◽  
Feiyun Xu ◽  
...  
Keyword(s):  
Root Growth ◽  
Soil Drying ◽  
Auxin Response

scholarly journals Effect of biostimulants on soybean seedlings

2020 ◽  
Vol 25 (50) ◽  
pp. 99-104
Author(s):  
Gorica Cvijanović ◽  
Ninoslav Čolić ◽  
Nenad Đurić ◽  
Gordana Dozet ◽  
Abduladim Eltreki ◽  
...  
Keyword(s):  
Root Growth ◽  
Morphological Characteristics ◽  
Vegetable Crops ◽  
Single Application ◽  
Soybean Seedling ◽  
Soybean Seedlings ◽  
Seedling Root ◽  
Novi Sad

The aim of this study was to analyze the effect of biostimulants on the morphological characteristics of soybean seedlings. The testing was conducted in the laboratory of the Faculty of Biofarming in Bačka Topola. The experimental material included three soybean varieties ('Galina', 'Sava' and 'Rubin') selected at the Institute of Field and Vegetable Crops in Novi Sad. The study lasted for two years, 2015-2016, and identical biostimulant treatments were applied in both years. In order to determine the effect of biostimulants on soybean seedling root, hypocotyl and weight, the following commercial biostimulants were applied: EM Aktiv, Terra Green Hobby, Slavol and Bioplant Flora. In addition to the single application of biostimulants, two combinations of Slavol + Bioplant Flora and Slavol + Bioplant Flora + Epin Extra + Slavol S were used as treatments. EM Aktiv showed the greatest effect on root growth. The root was on average 12% longer than the control. Slavol S had the greatest influence on seedling hypocotyl and weight. The increase was 8.24% and 5.15%, respectively, compared with the control.

scholarly journals Does salinity affect lifestyle switching in the plant pathogen Fusarium solani?

2020 ◽  
Vol 2 (6) ◽  
Author(s):  
Louise Eydoux ◽  
Emily C. Farrer
Keyword(s):  
Root Growth ◽  
Fusarium Solani ◽  
Model Organism ◽  
Common Reed ◽  
Soil Salinization ◽  
Native Plant ◽  
Crop Species ◽  
Elevated Salinity ◽  
Weak Evidence ◽  
A Minor

Symbiotic microbes that live within plant hosts can exhibit a range in function from mutualistic to pathogenic, but the reason for this lifestyle switching remains largely unknown. Here we tested whether environmental stress, specifically salinity, is a factor that can trigger lifestyle switching in a fungus mainly known as a pathogen, Fusarium solani. F. solani was isolated from roots of Phragmites australis (common reed) in saline coastal marshes of Louisiana, USA, and we used Oryza sativa (rice) as a model organism from wetland environments to test the symbiont lifestyle. We plated rice seeds on control plates or plates with F. solani at three levels of salinity (0, 8 and 16 p.p.t.), then assessed germination and seedling growth after 20 days. Salinity strongly reduced percentage germination, slowed the timing of germination and reduced growth of rice. F. solani slowed germination, and it also caused a minor increase in root growth at medium salinity and a minor decrease in root growth at high salinity. Overall, despite being a common pathogen in other crop species (peas, beans, potatoes and many types of cucurbits), we found little evidence that F. solani has a strong pathogenic lifestyle in rice and we found weak evidence that pathogenicity may increase slightly with elevated salinity. These results have implications for both crops and native plant health in the future as soil salinization increases worldwide.

Soil physical conditions affecting seedling root growth

1972 ◽  
Vol 37 (1) ◽  
pp. 151-158 ◽  
Author(s):  
B. W. Eavis
Keyword(s):  
Root Growth ◽  
Physical Conditions ◽  
Seedling Root

scholarly journals The histone deacetylase OsHDAC1 epigenetically regulates theOsNAC6gene that controls seedling root growth in rice

2009 ◽  
Vol 59 (5) ◽  
pp. 764-776 ◽  
Author(s):  
Pil Joong Chung ◽  
Yeon Shic Kim ◽  
Jin Seo Jeong ◽  
Su-Hyun Park ◽  
Baek Hie Nahm ◽  
...  
Keyword(s):  
Root Growth ◽  
Histone Deacetylase ◽  
Seedling Root

scholarly journals The effects of dwarfing genes on seedling root growth of wheat

2009 ◽  
Vol 60 (9) ◽  
pp. 2565-2573 ◽  
Author(s):  
T. Wojciechowski ◽  
M.J. Gooding ◽  
L. Ramsay ◽  
P.J. Gregory
Keyword(s):  
Root Growth ◽  
Dwarfing Genes ◽  
Seedling Root
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