‘Hass’ avocado tree growth on four rootstocks in California. II. Shoot and root growth

2012 ◽  
Vol 143 ◽  
pp. 205-210 ◽  
Author(s):  
Michael V. Mickelbart ◽  
Paul W. Robinson ◽  
Guy Witney ◽  
Mary Lu Arpaia
Keyword(s):  
Root Growth ◽  
Tree Growth ◽  
Shoot And Root Growth ◽  
Hass Avocado

scholarly journals Impact of Mycorrhization on Phosphorus Utilization Efficiency of Acacia gummifera and Retama monosperma under Salt Stress

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 611
Author(s):  
Abdessamad Fakhech ◽  
Martin Jemo ◽  
Najat Manaut ◽  
Lahcen Ouahmane ◽  
Mohamed Hafidi
Keyword(s):  
Salt Stress ◽  
Root Growth ◽  
N Uptake ◽  
P Uptake ◽  
Utilization Efficiency ◽  
Legume Species ◽  
Growth Responses ◽  
Phosphorus Utilization ◽  
Phosphorus Utilization Efficiency ◽  
Shoot And Root Growth

The impact of salt stress on the growth and phosphorus utilization efficiency (PUE) of two leguminous species: Retama monosperma and Acacia gummifera was studied. The effectiveness of arbuscular mycorrhizal fungi (AMF) to mitigate salt stress was furthermore assessed. Growth, N and P tissue concentrations, mycorrhizal root colonization frequency and intensity, and P utilization efficiency (PUE) in the absence or presence of AMF were evaluated under no salt (0 mM L−1) and three salt (NaCl) concentrations of (25, 50 and 100 mM L−1) using a natural sterilized soil. A significant difference in mycorrhizal colonization intensity, root-to-shoot ratio, P uptake, PUE, and N uptake was observed between the legume species. Salt stress inhibited the shoot and root growth, and reduced P and N uptake by the legume species. Mycorrhizal inoculation aided to mitigate the effects of salt stress with an average increase of shoot and root growth responses by 35% and 32% in the inoculated than in the non-inoculated A. gummifera treatments. The average shoot and root growth responses were 37% and 45% higher in the inoculated compared to the non-inoculated treatments of R. monosperma. Average mycorrhizal shoot and root P uptake responses were 66% and 68% under A. gummifera, and 40% and 95% under R. monosperma, respectively. Mycorrhizal inoculated treatments consistently maintained lower PUE in the roots. The results provide insights for further investigations on the AMF conferred mechanisms to salt stress tolerance response by A. gummifera and R. monosperma, to enable the development of effective technologies for sustainable afforestation and reforestation programs in the Atlantic coast of Morocco.

scholarly journals Histidine Kinase Homologs That Act as Cytokinin Receptors Possess Overlapping Functions in the Regulation of Shoot and Root Growth in Arabidopsis

2004 ◽  
Vol 16 (6) ◽  
pp. 1365-1377 ◽  
Author(s):  
Chika Nishimura ◽  
Yoshi Ohashi ◽  
Shusei Sato ◽  
Tomohiko Kato ◽  
Satoshi Tabata ◽  
...  
Keyword(s):  
Root Growth ◽  
Histidine Kinase ◽  
Cytokinin Receptors ◽  
Shoot And Root Growth

scholarly journals Effects of warming and fertilization interacting with intraspecific competition on fine root traits of Picea asperata

2020 ◽  
Author(s):  
Dan-Dan Li ◽  
Hong-Wei Nan ◽  
Chun-Zhang Zhao ◽  
Chun-Ying Yin ◽  
Qing Liu
Keyword(s):  
Root Growth ◽  
Climate Warming ◽  
Tree Growth ◽  
Root Length ◽  
Root Biomass ◽  
Fine Root ◽  
Root Traits ◽  
Root Surface ◽  
Root Branching ◽  
Picea Asperata

Abstract Aims Competition, temperature, and nutrient are the most important determinants of tree growth in the cold climate on the eastern Tibetan Plateau. Although many studies have reported their individual effects on tree growth, little is known about how the interactions of competition with fertilization and temperature affect root growth. We aim to test whether climate warming and fertilization promote competition and to explore the functional strategies of Picea asperata in response to the interactions of these factors. Methods We conducted a paired experiment including competition and non-competition treatments under elevated temperature (ET) and fertilization. We measured root traits, including the root tip number over the root surface (RTRS), the root branching events over the root surface (RBRS), the specific root length (SRL), the specific root area (SRA), the total fine root length and area (RL and RA), the root tips (RT) and root branching events (RB). These root traits are considered to be indicators of plant resource uptake capacity and root growth. The root biomass and the nutrient concentrations in the roots were also determined. Important Findings The results indicated that ET, fertilization and competition individually enhanced the nitrogen (N) and potassium (K) concentrations in fine roots, but they did not affect fine root biomass or root traits, including RL, RT, RA and RB. However, both temperature and fertilization, as well as their interaction, interacting with competition increased RL, RA, RT, RB, and nutrient uptake. In addition, the SRL, SRA, RTRS and RBRS decreased under fertilization, the interaction between temperature and competition decreased SRL and SRA, while the other parameters were not affected by temperature or competition. These results indicate that Picea asperata maintains a conservative nutrient strategy in response to competition, climate warming, fertilization, and their interactions. Our results improve our understanding of the physiological and ecological adaptability of trees to global change.

Dynamic shoot and root growth at different developmental stages of tomato (Solanum lycopersicum Mill.) under acute ozone stress

2013 ◽  
Vol 150 ◽  
pp. 317-325 ◽  
Author(s):  
Aye Aye Thwe ◽  
Gilles Vercambre ◽  
Hélène Gautier ◽  
Loïc Pagès ◽  
Christophe Jourdan ◽  
...  
Keyword(s):  
Root Growth ◽  
Solanum Lycopersicum ◽  
Developmental Stages ◽  
Ozone Stress ◽  
Shoot And Root Growth

Root Growth of Accolade™ Elm in Structural Soil Under Porous and Nonporous Asphalt After Twelve Years

2019 ◽  
Vol 45 (6) ◽  
Author(s):  
Nina Bassuk ◽  
Gary Raffel ◽  
Miles Schwartz Sax
Keyword(s):  
Root Growth ◽  
Tree Growth ◽  
Ground Penetrating Radar ◽  
Soil Profile ◽  
Shoot Growth ◽  
Porous Asphalt ◽  
Ground Penetrating

Accolade™ Elm trees were planted in CU Structural Soil® overlaid with porous or nonporous asphalt in 2005. At three separate points (2012, 2015, and 2016) over the last twelve years, root densities were measured with Ground Penetrating Radar to a depth of 30 inches (76.2 cm) beneath the asphalt. Roots under the porous asphalt were more numerous and tended to grow deeper in the structural soil profile. Shoot growth was reduced in trees that grew under the nonporous asphalt beginning in the eighth year after planting. CU Structural Soil® is a viable medium for tree growth and stormwater capture when paved with porous asphalt.

Cytokinin Effects on Creeping Bentgrass Responses to Heat Stress: I. Shoot and Root Growth

Crop Science ◽  
2002 ◽  
Vol 42 (2) ◽  
pp. 457-465 ◽  
Author(s):  
Xiaozhong Liu ◽  
Bingru Huang ◽  
Gary Banowetz
Keyword(s):  
Heat Stress ◽  
Root Growth ◽  
Creeping Bentgrass ◽  
Shoot And Root Growth

Influence of BAS-145138 on the Activity of Sulfonylurea and Imidazolinone Herbicides

1991 ◽  
Vol 46 (11-12) ◽  
pp. 939-944
Author(s):  
Robert M. Devlin ◽  
Irena I. Zbiec
Keyword(s):  
Root Growth ◽  
Dry Weight ◽  
Sulfonylurea Herbicides ◽  
Fresh Weight ◽  
Phytotoxic Activity ◽  
Phytotoxic Effects ◽  
Shoot And Root Growth ◽  
Imidazolinone Herbicides

This study demonstrates that corn can be partially safened by BAS-145138 against sulfonylurea and imidazolinone herbicides. The corn seeds were impregnated with BAS-145138 by soaking the seeds for 6 h in solutions of the safener. BAS-145138 had no effect on corn growth. However, corn shoot and root growth in length, fresh weight, and dry weight was partially protected by BAS-145138 from the phytotoxic effects of the sulfonylurea herbicides thiameturon and CGA -136872. Similar protection was given to corn against the phytotoxic activity of the imidazolinone herbicides imazapyr, imazaquin, and imazethapyr. This study suggests that corn could be safened with BAS-145138 against the phytotoxic effects of residual amounts of sulfonylurea and imidazolinone herbicides found in fields where wheat/corn or soybean/corn rotations take place.

Sign in / Sign up

Export Citation Format

Share Document