scholarly journals Growth of Primary and Lateral Roots of Vicia faba L. in the Solution of Calcium Sulfate

2014 ◽  
Author(s):  
Michael Pyshnov
Keyword(s):  
Vicia Faba ◽  
Calcium Sulfate ◽  
Bacterial Contamination ◽  
Lateral Roots ◽  
Moist Air ◽  
Surface Sterilization ◽  
Primary Roots ◽  
Vicia Faba L ◽  
Healthy Growth ◽  
Primary And Lateral Roots

The presence of calcium sulfate in cultivating solution prevents bacterial contamination, browning/lignification and the death of the roots. There is no need for surface sterilization of seeds. No other ingredients, beside calcium sulfate, are needed for the healthy growth of the primary and lateral roots. There is no need to change the solution for several weeks when up to 60 lateral roots per seed can appear. A modification of the two-stage growing technique where the seeds are first suspended in moist air over the cultivating solution to grow primary roots, and then, the primary roots are covered with the cultivating solution to grow lateral roots, was used. The hypothesis is put forward that primary roots actually need water as a liquid to expel air, as the air is probably preventing the appearance of lateral roots.

An Analysis of Cell Proliferation in the Apical Meristem of Lateral Roots of Vicia faba L.

1976 ◽  
Vol 40 (4) ◽  
pp. 865-875 ◽  
Author(s):  
R. D. MACLEOD
Keyword(s):  
Cell Proliferation ◽  
Vicia Faba ◽  
Apical Meristem ◽  
Lateral Roots ◽  
Vicia Faba L

Cap Formation during the Elongation of Lateral Roots of Vicia faba L.

1976 ◽  
Vol 40 (4) ◽  
pp. 877-885 ◽  
Author(s):  
R. D. MACLEOD
Keyword(s):  
Vicia Faba ◽  
Lateral Roots ◽  
Vicia Faba L

scholarly journals Influence of Indolebutyric Acid Potassium Salt on Propagation of Semi-hardwood Stem Cuttings of Bougainvillea

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 983D-983
Author(s):  
Christopher B. Cerveny ◽  
James L. Gibson
Keyword(s):  
Potassium Salt ◽  
Lateral Roots ◽  
Tropical Species ◽  
Stem Cuttings ◽  
Indolebutyric Acid ◽  
Percent Survival ◽  
Industry Standard ◽  
Primary Roots ◽  
Napthaleneacetic Acid ◽  
Primary And Lateral Roots

Bougainvillea glabra is a tropical species with reportedly difficulty to propagate. Previous research has shown the importance of talc-based rooting hormones when propagating Bougainvillea, yet little has been published on the efficacy of liquid-based formulations. Therefore, our objective was to determine the optimum concentration of indolebutyric acid potassium salt (KIBA) needed to effectively root semi-hardwood stem cuttings of Bougainvillea `California Gold' and `Helen Johnson'. Sub-terminal cuttings measuring 6.5 cm were harvested from stock plants of Bougainvillea on 3-week intervals from 6 June to 8 Aug. and repeated 6 Sept. to 8 Nov. 2005. Cuttings were dipped 0.5 cm in a solution of 0, 1500, 3000, or 6000 mg·L-1 KIBA or in a 1500-mg·L-1 solution containing indolebutyric acid (IBA) 1%: napthaleneacetic acid (NAA) 0.5% and propagated under mist. Cuttings were evaluated for percent survival, rooting quality (1 = poor; 5 = best), and number of primary and lateral roots 5 weeks after planting (WAP). Differences in `California Gold' for percent survival, average rank, and number of roots were determined not significant at P ≤ 0.05. However, application of rooting hormone to `Helen Johnson' increased rooting quality, number of primary roots, and number of lateral roots by up to 24%, 53%, and 50%, respectively. Results indicated rooting performance was generally improved with application of KIBA; therefore, cuttings of Bougainvillea may benefit from a 1500-mg·L-1 solution. KIBA was also found to be as effective as the industry standard liquid formulation. Growers will have to consider the availability and cost of KIBA when propagating Bougainvillea.

scholarly journals Impact of soil compaction heterogeneity and moisture on maize (Zea mays L.) root and shoot development

2008 ◽  
Vol 54 (No. 12) ◽  
pp. 509-519 ◽  
Author(s):  
B. Konôpka ◽  
L. Pagès ◽  
C. Doussan
Keyword(s):  
Zea Mays ◽  
Soil Moisture ◽  
Soil Compaction ◽  
Statistical Tests ◽  
Lateral Roots ◽  
Primary Root ◽  
Leaf Biomass ◽  
Fine Soil ◽  
Primary Roots ◽  
Primary And Lateral Roots

Soil compaction heterogeneity and water content are supposed to be decisive factors influencing plant growth. Our experiment focused on simulation of two soil moisture levels (0.16 and 0.19 g/g) plus two levels of clod proportion (30 and 60% volume) and their effects on root and leaf variables of maize (<I>Zea mays</I> L.). We studied number of primary and lateral roots as well as primary root length at the particular soil depths. Statistical tests showed that the decrease rate of the number of roots versus depth was significantly affected by the two studied factors (<I>P</I> < 0.01). Soil moisture and clod occurrence, interactively, affected leaf biomass (<I>P</I> = 0.02). Presence of clods modified root morphological features. Particularly, the diameter of primary roots in the clods was significantly higher than of those grown in fine soil (<I>P</I> < 0.01). For primary roots, which penetrated clods, branching density decreased considerably for the root segments located just after the clods (<I>P</I> = 0.01). Regarding their avoidance to clods and tortuosity, large differences were found between primary roots grown in the contrasting soil environments.

Geoperception in primary and lateral roots of Phaseolus vulgaris (Fabaceae). II. Intracellular distribution of organelles in columella cells

1984 ◽  
Vol 62 (5) ◽  
pp. 1090-1094 ◽  
Author(s):  
J. Steven Ransom ◽  
Randy Moore
Keyword(s):  
Phaseolus Vulgaris ◽  
Lateral Roots ◽  
Relative Volume ◽  
Precise Location ◽  
Primary Roots ◽  
Columella Cells ◽  
Primary And Lateral Roots ◽  
Cellular Components

A morphometric analysis of the ultrastructures of columella cells in primary and lateral roots of Phaseolus vulgaris was performed to determine the precise location of cellular components in these cells. Roots were fixed in situ to preserve the in vivo ultrastructure of the cells. All cellular components in columella cells of both types of roots were distributed asymmetrically. The nucleus and vacuome were located primarily in the middle third of both types of columella cells. Dictyosomes, mitochondria, and amyloplasts were most abundant in the lower third of the columella cells in both types of roots. The distribution of amyloplasts was the most asymmetrical of all cellular components examined, with the lower third of the columella cells containing approximately 90% of the relative volume of amyloplasts in both types of roots. The distribution of cellular components in columella cells of primary roots was not significantly different from that of columella cells of lateral roots. These results indicate that differences in georesponsiveness of primary and lateral roots of P. vulgaris are probably due to factors other than the ultrastructures of their individual columella cells.

CELL DOUBLING TIME IN THE APICAL MM OF ELONGATING LATERAL ROOTS OF VICIA FABA L.

1979 ◽  
Vol 82 (3) ◽  
pp. 747-755 ◽  
Author(s):  
A. THOMPSON ◽  
R. D. MacLEOD
Keyword(s):  
Vicia Faba ◽  
Doubling Time ◽  
Lateral Roots ◽  
Vicia Faba L ◽  
Cell Doubling Time

Cell Expansion during the Elongation of Lateral Roots of Vicia faba L.

1975 ◽  
Vol 39 (1) ◽  
pp. 57-69 ◽  
Author(s):  
R. D. MACLEOD ◽  
S. M. MCLACHLAN
Keyword(s):  
Vicia Faba ◽  
Cell Expansion ◽  
Lateral Roots ◽  
Vicia Faba L
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