scholarly journals Seedling Root Growth Response to Cool Environmental Conditions for Diverse Cotton Cultivars

2012 ◽  
Vol 2 (3) ◽  
pp. 269-287 ◽  
Author(s):  
D. Oosterhuis
Keyword(s):  
Root Growth ◽  
Environmental Conditions ◽  
Growth Response ◽  
Seedling Root

Corn seedling root growth response to soil physical quality

2021 ◽  
Author(s):  
Márcio R. Nunes ◽  
Renato Lima ◽  
Cassio Tormena ◽  
Doug L Karlen
Keyword(s):  
Root Growth ◽  
Growth Response ◽  
Physical Quality ◽  
Seedling Root ◽  
Soil Physical Quality ◽  
Corn Seedling

Foliar vs. Root Sensitivity of Hairy Bittercress (Cardamine hirsuta) to Isoxaben

2006 ◽  
Vol 20 (2) ◽  
pp. 326-333 ◽  
Author(s):  
Glenn Wehtje ◽  
Charles H. Gilliam ◽  
Michael E. Miller ◽  
James E. Altland
Keyword(s):  
Root Growth ◽  
Environmental Conditions ◽  
Day Length ◽  
Root Growth Inhibition ◽  
Root Absorption ◽  
Nursery Production ◽  
Plant Maturity ◽  
Higher Temperature ◽  
Inhibit Root Growth ◽  
Hydroponically Grown

It has been previously reported that POST-applied isoxaben can effectively control established hairy bittercress. Experiments were conducted to determine the relative importance of root vs. foliar entry of POST-applied isoxaben. At a common isoxaben rate of 0.56 kg/ha, foliar-only and foliar plus soil applications provided 10.5 and 23.3% control, respectively, as determined by fresh weight reduction. In contrast, soil-only application provided 47.0% control. Hairy bittercress foliar absorption of14C–isoxaben did not exceed 15% of the amount applied after 72 h. Therefore, the comparatively less effectiveness of foliar-only applications may be attributed primarily to limited absorption. Minimal isoxaben concentration required to inhibit root growth of hydroponically grown hairy bittercress was 0.0025 mg/L. Higher concentrations were required to produce a response in the foliage. Sorption of isoxaben by pine bark rooting substrate, typical of what is used in container nursery production, exceeded 99% of amount applied after 36 h. Even with 99% sorption, the probable concentration within the aqueous phase remains sufficient to inhibit hairy bittercress root growth. Additional studies with14C–isoxaben established that approximately 35% of the root-absorbed isoxaben was translocated into the foliage. Translocation from the roots into the foliage was reduced to 16% when the experiment was repeated during environmental conditions less favorable for vegetative growth (i.e., longer day length and higher temperature). Results indicate that the control of hairy bittercress with POST-applied isoxaben is likely the result of root absorption and root-growth inhibition. Expression of phytotoxicity within the foliage is also a component, but is dependent upon the root-absorbed isoxaben being translocated into the foliage. Extent of this translocation is dependent upon plant maturity and prevalent environmental conditions.

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.

Predicting Initial Tall Fescue Root Growth Response to Calcium/Aluminum Solution Concentrations

2009 ◽  
Vol 40 (7-8) ◽  
pp. 1227-1239
Author(s):  
John S. Kruse ◽  
William P. Miller ◽  
Maxim J. Schlossberg ◽  
Daniel Yanosky ◽  
Daniel B. Hall
Keyword(s):  
Root Growth ◽  
Tall Fescue ◽  
Growth Response

Physiological processes in plantation establishment and the development of specifications for forest planting stock

1990 ◽  
Vol 20 (4) ◽  
pp. 415-427 ◽  
Author(s):  
A. N. Burdett
Keyword(s):  
Root Growth ◽  
Environmental Conditions ◽  
Water Status ◽  
Plant Water Status ◽  
Forest Site ◽  
Plant Water ◽  
Plantation Establishment ◽  
Tissue Water ◽  
Planting Stock ◽  
Central Process

Both the morphological and physiological characteristics of forest planting stock vary widely with nursery culture and environment. Through the control of environmentally determined variation in phenotype, stock can be adapted to both the stress of transplanting from nursery to forest site and the particular environmental conditions of the forest site. Evidence is discussed that indicates that the stress of transplanting is primarily water stress, resulting from (i) the confinement of roots to the planting hole, (ii) poor root–soil contact, and (iii) low root permeability. These deficiencies are overcome by root growth, which is thus a central process in plantation establishment. Root growth depends largely on current photosynthesis. Photosynthesis depends on the assimilation of carbon dioxide at the expense of lost water in transpiration. Transpiration is limited by water uptake and hence depends on root growth. Root growth and photosynthesis in newly planted trees are thus mutually dependent. Because of this relationship, plant water status immediately after planting, or as soon as conditions favorable to root growth occur, is a crucial factor in determining plantation establishment success. High plant tissue water status immediately after planting, or as soon as environmental conditions permit root growth, allows the onset of a positive cycle of root growth supported by photosynthesis and photosynthesis supported by root growth; whereas low tissue water potential immediately after planting can lead to the inhibition or root growth by a lack of photosynthesis and the inhibition of photosynthesis by a lack of root growth. Stock characteristics that enhance plant water status immediately after planting are reviewed and the scope for their control considered. Stock characteristics affecting adaptation to particular planting site conditions, or capable of affecting postestablishment plantation performance, are also discussed.

scholarly journals Potassium in Root Growth and Development

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 435 ◽  
Author(s):  
Marek Sustr ◽  
Ales Soukup ◽  
Edita Tylova
Keyword(s):  
Root Growth ◽  
Membrane Trafficking ◽  
Growth Response ◽  
Plant Stress ◽  
Physiological Role ◽  
Mobile Element ◽  
Plant Responses ◽  
Nitrogen And Phosphorus ◽  
Wide Range ◽  
K Transport

Potassium is an essential macronutrient that has been partly overshadowed in root science by nitrogen and phosphorus. The current boom in potassium-related studies coincides with an emerging awareness of its importance in plant growth, metabolic functions, stress tolerance, and efficient agriculture. In this review, we summarized recent progress in understanding the role of K+ in root growth, development of root system architecture, cellular functions, and specific plant responses to K+ shortage. K+ transport is crucial for its physiological role. A wide range of K+ transport proteins has developed during evolution and acquired specific functions in plants. There is evidence linking K+ transport with cell expansion, membrane trafficking, auxin homeostasis, cell signaling, and phloem transport. This places K+ among important general regulatory factors of root growth. K+ is a rather mobile element in soil, so the absence of systemic and localized root growth response has been accepted. However, recent research confirms both systemic and localized growth response in Arabidopsis thaliana and highlights K+ uptake as a crucial mechanism for plant stress response. K+-related regulatory mechanisms, K+ transporters, K+ acquisition efficiency, and phenotyping for selection of K+ efficient plants/cultivars are highlighted in this review.

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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