scholarly journals Use of Dyes to Facilitate Measurement of New Root Growth of Apple

HortScience ◽  
1990 ◽  
Vol 25 (1) ◽  
pp. 116-118 ◽  
Author(s):  
Michael A. Arnold ◽  
Eric Young
Keyword(s):  
Methylene Blue ◽  
Adverse Effects ◽  
Shoot Growth ◽  
Root Systems ◽  
Neutral Red ◽  
Water Control ◽  
Alizarin Red ◽  
Effective Separation ◽  
Root And Shoot Growth ◽  
Safranin O

The root systems of dormant l-year-old apple (Malus domestics Borkh. `Starkrimson') grafted on seedling rootstock were dipped for 15 seconds in one of six dye treatments or a water control. Trees were destructively harvested at 15, 30, and 90 days after treatment to monitor new root and shoot growth and effectiveness of dyes for distinguishing between regenerated roots and those present at planting. Neutral red and methylene blue allowed effective separation of new and old roots through 90 days after treatment, and had few adverse effects on root or shoot growth, with a water control being the standard. Crystal violet and safranin-O allowed effective separation between regenerated and previously existing roots, but these dyes adversely affected new root and shoot growth. Alizarin red S and Hantover meat branding ink were ineffective for distinguishing between regenerated and previously existing roots by 15 days after treatment.

scholarly journals Agricultural concepts of roots: from morphogenetic to functional equilibrium between root and shoot growth.

1987 ◽  
Vol 35 (4) ◽  
pp. 487-496 ◽  
Author(s):  
M. van Noordwijk ◽  
P. de Willigen
Keyword(s):  
Crop Production ◽  
Shoot Growth ◽  
Nutrient Use Efficiency ◽  
Root Systems ◽  
Nutrient Loss ◽  
Rooting Depth ◽  
Past Century ◽  
Functional Equilibrium ◽  
Nutrient Use ◽  
Root And Shoot Growth

Over the past century, emphasis has changed towards water and nutrient uptake by root system ('functional equilibrium') from relations between root and shoot growth, ('morphogenetic equilibrium'). Separate optima for root growth and shoot growth can often be distinguished. Relatively small root systems can suffice for maximum crop production, provided the supply of water and nutrients is plentiful. Deep tillage or water-table lowering, intended to increase rooting depth, can be counterproductive for plant growth. Larger root systems may, however, withstand rapidly changing environmental conditions better, and may increase nutrient use efficiency or reduce nutrient loss. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Effects of herbicides on nodulation and growth of two varieties of peas (Pisum sativum)

2002 ◽  
Vol 50 (3) ◽  
pp. 337-348 ◽  
Author(s):  
G. Singh ◽  
D. Wright
Keyword(s):  
Adverse Effect ◽  
Pisum Sativum ◽  
Adverse Effects ◽  
Shoot Growth ◽  
Dry Weight ◽  
Field Application ◽  
Slight Effect ◽  
Root Dry Weight ◽  
Root And Shoot Growth

The effects of the pre-emergence application of terbutryn/terbuthylazine at 1.40 and 2.80 kg a.i./ha and prometryn at 1.70 and 3.40 kg a.i./ha and the post-emergence application of bentazone at 1.44 and 2.88 kg a.i./ha were studied on nodulation, root and shoot growth in two pea varieties, namely Rex and Guido. Of these the lower rates are the recommended rates for field application. Bentazone even at the recommended rate decreased nodule dry weight, whereas all three herbicides at double the recommended rate (except terbutryn/terbuthylazine in Rex) decreased the number and dry weight of nodules. Terbutryn/terbuthylazine and bentazone decreased root dry weight to a greater extent, whereas prometryn had only a slight effect. Shoot growth was adversely affected by all three herbicides in both the varieties, but prometryn and bentazone had less adverse effects in Rex than in Guido. Compared to the recommended rate, the herbicides had a greater adverse effect on nodulation at double the recommended rate.

scholarly journals Root and crop growth of oats as affected by the length of periods of high water-table.

1980 ◽  
Vol 28 (1) ◽  
pp. 20-28
Author(s):  
J.J. Schuurman
Keyword(s):  
Root Growth ◽  
Water Table ◽  
Growth Stage ◽  
Shoot Growth ◽  
Root Systems ◽  
High Water ◽  
Early Growth ◽  
High Water Table ◽  
Nodal Roots ◽  
Root And Shoot Growth

The influence of the duration of a high water-table on root and shoot growth of oats in an early growth stage was studied. Root wt., depth of rooting and number of nodal roots with a length of < 10 cm reacted favourably on a low water-table. In this experiment shoot growth, however, hardly reacted to better root growth. This meant that the plants with restricted root growth could absorb water and nutrients as well as those with larger root systems. The fertilization of the top 0-25 cm of soil could have been an important factor in this report. (Abstract retrieved from CAB Abstracts by CABI’s permission)

The effect of soaking and drying seeds before planting on the germination and growth of Triticum vulgare under normal and saline conditions

1975 ◽  
Vol 53 (13) ◽  
pp. 1328-1332 ◽  
Author(s):  
M. Idris ◽  
M. Aslam
Keyword(s):  
Shoot Growth ◽  
Root Systems ◽  
Percentage Germination ◽  
Wheat Seed ◽  
Subsequent Growth ◽  
Air Drying ◽  
Nacl Salinity ◽  
Triticum Vulgare ◽  
Root And Shoot Growth ◽  
Germination And Growth

The soaking of wheat seed (Triticum vulgare L.) in water or CaCl2 solutions followed by air-drying before planting accelerated the germination but did not affect the final percentage germination and subsequent growth of the seedlings under normal conditions. However, under conditions of 0.5% NaCl salinity the soaking and drying of the seeds before planting stimulated the germination and growth of the seedlings. In no case were the presowing treatments more effective in improving the germination and root and shoot growth under 0.5% NaCl salinity than under normal condition. Under 0.5% NaCl salinity the seedlings grown from treated seeds had more extensive and deeper root systems than the seedlings grown from untreated seeds. Presowing soaking of the seed failed to improve the germination under increasing salinity of 1.0 and 1.5% NaCl.

Isolation and identification of IAA producing endosymbiotic bacteria from Gracillaria corticata (J. Agardh)

2016 ◽  
Vol 5 (12) ◽  
pp. 5179
Author(s):  
Ilahi Shaik* ◽  
P. Janakiram ◽  
Sujatha L. ◽  
Sushma Chandra
Keyword(s):  
Acetic Acid ◽  
Culture Filtrate ◽  
Indole Acetic Acid ◽  
Shoot Growth ◽  
High Salinity ◽  
Saline Soils ◽  
Bacterial Strains ◽  
Isolation And Identification ◽  
Endosymbiotic Bacteria ◽  
Root And Shoot Growth

Indole acetic acid is a natural phytohormone which influence the root and shoot growth of the plants. Six (GM1-GM6) endosymbiotic bacteria are isolated from Gracilaria corticata and screened for the production of IAA out of six, three bacterial strains GM3, GM5 and GM6 produced significant amount of IAA 102.4 µg/ml 89.40 µg/ml 109.43 µg/ml respectively. Presence of IAA in culture filtrate of the above strains is further analyzed and confirmed by TLC. As these bacterial strains, able to tolerate the high salinity these can be effectively used as PGR to increase the crop yield in saline soils.

Effect of sand grain shape on root and shoot growth of wheat seedlings

Geoderma ◽  
2016 ◽  
Vol 265 ◽  
pp. 1-5 ◽  
Author(s):  
J. Lipiec ◽  
A. Siczek ◽  
A. Sochan ◽  
A. Bieganowski
Keyword(s):  
Shoot Growth ◽  
Grain Shape ◽  
Wheat Seedlings ◽  
Root And Shoot Growth

Circadian regulation of grapevine root and shoot growth and their modulation by photoperiod and temperature

2018 ◽  
Vol 222 ◽  
pp. 86-93 ◽  
Author(s):  
Kare P. Mahmud ◽  
Bruno P. Holzapfel ◽  
Yann Guisard ◽  
Jason P. Smith ◽  
Sharon Nielsen ◽  
...  
Keyword(s):  
Shoot Growth ◽  
Circadian Regulation ◽  
Root And Shoot Growth

scholarly journals Silicon reduces aluminum content in tissues and ameliorates its toxic effects on potato plant growth

2016 ◽  
Vol 46 (3) ◽  
pp. 506-512 ◽  
Author(s):  
Athos Odin Severo Dorneles ◽  
Aline Soares Pereira ◽  
Liana Verônica Rossato ◽  
Gessieli Possebom ◽  
Victória Martini Sasso ◽  
...  
Keyword(s):  
Chemical Element ◽  
Shoot Growth ◽  
Aluminum Content ◽  
Solanum Tuberosum L ◽  
Toxic Effects ◽  
Al Content ◽  
Potato Plants ◽  
High Affinity ◽  
Root And Shoot Growth ◽  
Tolerant Genotype

ABSTRACT: Aluminum (Al) is highly toxic to plants, causing stress and inhibiting growth and silicon (Si) is considered beneficial for plants. This chemical element has a high affinity with Al. The aim of this study was to investigate the potential of Si to mitigate the toxic effects of Al on potato ( Solanum tuberosum L.) plants and assess whether this behavior is different among genotypes with differing degrees of sensitivity to Al. Potato plants of the genotypes SMIJ319-7 (Al-sensitive) and SMIF212-3 (Al-tolerant) were grown for fourteen days in nutrient solution (without P and pH 4.5±0.1) under exposure to combinations of Al (0 and 1.85mM) and Si (0, 0.5 and 1.0mM). After this period, shoot and roots of the two genotypes were collected to determine Al content in tissues and assess morphological parameters of root and shoot growth. Roots of both genotypes accumulated more Al than shoots and the Al-tolerant genotype accumulated more Al than the sensitive one, both in roots and in shoot. Furthermore, the presence of 0.5 and 1.0mM Si together with Al reduced the Al content in shoot in both genotypes and in roots of the Al-tolerant genotype, respectively. Si ameliorated the toxic effects of Al with regard to number of root branches and leaf number in both potato genotypes. Si has the potential to mitigate the toxic effects of Al in potato plants regardless of Al sensitivity.

scholarly journals Genotypic differences in root and shoot growth of barley (Hordeum vulgare L.) grown under different salinity levels

Hereditas ◽  
2010 ◽  
Vol 147 (3) ◽  
pp. 114-122 ◽  
Author(s):  
H. Bchini ◽  
M. Ben Naceur ◽  
R. Sayar ◽  
H. Khemira ◽  
L. Ben Kaab-Bettaeïb
Keyword(s):  
Hordeum Vulgare ◽  
Shoot Growth ◽  
Genotypic Differences ◽  
Hordeum Vulgare L ◽  
Root And Shoot Growth ◽  
Salinity Levels
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