scholarly journals The integration of plant behaviour. - II. The influence of the shoot on the growth of roots in seedlings

1930 ◽  
Vol 106 (743) ◽  
pp. 182-188 ◽  
Keyword(s):  
Zea Mays ◽  
Root System ◽  
Vicia Faba ◽  
Plant Behaviour ◽  
Species Removal

Several investigators have already studied the manner in which the growth of roots is affected when the shoots are removed. Kny concluded (1, p. 279) that in young seedlings of Vicia Faba and Zea Mays the growth in length of the main roots and the increase in weight of the whole root-system were altered very little, if at all, by the removal of the shoot. But Townsend (6, p. 515) found that in seedlings of the same species removal of the shoot distinctly accelerated the growth in length of the root, though not until after a preliminary period of 1 or 2 days, during which the growth of the root was unaltered or slightly retarded. His results certainly appear more convincing than those of Kny.

GC-MS analysis of crude extracts from Heliotropium bacciferum L. and their allelopathic effects on Zea mays L. and Vicia faba L.

2017 ◽  
Vol 41 (1) ◽  
pp. 51-64
Author(s):  
M.M. Elqahtani ◽  
M. El-Zohri ◽  
H. K. Galal ◽  
A.E. El-Enany
Keyword(s):  
Zea Mays ◽  
Vicia Faba ◽  
Zea Mays L ◽  
Ms Analysis ◽  
Crude Extracts ◽  
Vicia Faba L ◽  
Allelopathic Effects

scholarly journals Fenugreek Seed Extract Enhanced the Growth of Vicia faba and Zea mays Seedlings

2017 ◽  
Vol 57 (2) ◽  
pp. 363-377 ◽  
Author(s):  
Mahmoud Madany ◽  
Radwan Khalil
Keyword(s):  
Zea Mays ◽  
Vicia Faba ◽  
Seed Extract ◽  
Fenugreek Seed

Does the lack of root hairs alter root system architecture of Zea mays?

2021 ◽  
Author(s):  
Steffen Schlüter ◽  
Eva Lippold ◽  
Maxime Phalempin ◽  
Doris Vetterlein
Keyword(s):  
Zea Mays ◽  
Root System ◽  
Root Hair ◽  
System Architecture ◽  
Volume Fraction ◽  
Root Hairs ◽  
Root System Architecture ◽  
Root Diameter ◽  
Wild Type ◽  
Defective Mutant

<p>Root hairs are one root trait among many which enables plants to adapt to environmental conditions. How different traits are coordinated and whether some are mutually exclusive is currently poorly understood. Comparing a root hair defective mutant with its corresponding wild-type we explored if and how the mutant exhibited root growth adaption strategies and as to how far this depended on the substrate.</p><p>Zea mays root hair defective mutant (rth3) and the corresponding wild-type siblings were grown on two substrates with contrasting texture and hence nutrient mobility. Root system architecture was investigated over time using repeated X-ray computed tomography.</p><p>There was no plastic adaption of root system architecture to the lack of root hairs, which resulted in lower uptake in particular in the substrate with low P mobility. The function of the root hairs for anchoring did not result in different depth profiles of the root length density between genotypes. Both maize genotypes showed a marked response to substrate. This was well reflected in the spatiotemporal development of rhizosphere volume fraction but especially in the strong response of root diameter to substrate, irrespective of genotype.</p><p>The most salient root plasticity trait was root diameter in response to substrate, whereas coping mechanisms for missing root hairs were less evident. Further experiments are required to elucidate whether observed differences can be explained by mechanical properties beyond mechanical impedance, root or microbiome ethylene production or differences in diffusion processes within the root or the rhizosphere.</p>

scholarly journals Foliar Accumulation of Melatonin Applied to the Roots of Maize (Zea mays) Seedlings

Biomolecules ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 26 ◽  
Author(s):  
Young Yoon ◽  
Minjae Kim ◽  
Woong Park
Keyword(s):  
Zea Mays ◽  
Salicylic Acid ◽  
Abscisic Acid ◽  
Root System ◽  
Plant Hormones ◽  
Time Course ◽  
Stomatal Closure ◽  
Uptake System ◽  
Regulatory Molecule ◽  
Transpirational Flow

Plants absorb melatonin from the environments as well as they synthesize the regulatory molecule. We applied melatonin to the roots of maize (Zea mays) seedlings and examined its accumulation in the leaves. Melatonin accumulation in the leaves was proportional to the exogenously applied concentrations up to 5 mM, without saturation. Time-course analysis of the accumulated melatonin content did not show an adaptable (or desensitizable) uptake system over a 24-h period. Melatonin accumulation in the leaves was reduced significantly by the plant hormones abscisic acid (ABA) and salicylic acid (SA), which commonly cause stomatal closure. The application of ABA and benzo-18-crown-6 (18-CR, a stomata-closing agent) induced stomatal closure and simultaneously decreased melatonin content in the leaves. When plants were shielded from airflow in the growth chamber, melatonin accumulation in the leaves decreased, indicating the influence of reduced transpiration. We conclude that melatonin applied exogenously to the root system is absorbed, mobilized upward according to the transpirational flow, and finally accumulated in the leaves.

scholarly journals Responses of a root system structure to soil compaction stress among maize ( Zea mays L .) hybrids

2021 ◽  
Author(s):  
Grzegorz Rut ◽  
Maciej T. Grzesiak ◽  
Anna Maksymowicz ◽  
Barbara Jurczyk ◽  
Andrzej Rzepka ◽  
...  
Keyword(s):  
Zea Mays ◽  
Root System ◽  
Soil Compaction ◽  
Zea Mays L ◽  
System Structure ◽  
Compaction Stress ◽  
Root System Structure

Distribution of western and northern corn rootworms (Coleoptera: Chrysomelidae) in Quebec, Canada

2005 ◽  
Vol 137 (2) ◽  
pp. 226-229 ◽  
Author(s):  
François Meloche ◽  
Marc Rhainds ◽  
Michèle Roy ◽  
Jacques Brodeur
Keyword(s):  
Zea Mays ◽  
North America ◽  
Root System ◽  
Larval Feeding ◽  
Complete Development ◽  
Corn Rootworms ◽  
Root Injury ◽  
Emergent Adults ◽  
Soil Cracks

Corn rootworms, Diabrotica Chevrolat spp. (Coleoptera: Chrysomelidae), are major pests of corn, Zea mays L. (Poaceae), in North America. Overwintering eggs hatch in the spring, and larvae feed on the root system, where they complete development. Emergent adults feed on vegetative and reproductive aerial structures of corn and oviposit in soil cracks or at the base of plants. Although feeding on silks by adult corn rootworms reduces the yield of corn, most of the damage results from root injury caused by larval feeding (Levine and Oloumi-Sadeghi 1991).

Sign in / Sign up

Export Citation Format

Share Document