primary root

Listing 1 - 10 from 294 for primary root

Angiosperm Families - Implicit Attributes
... ; without libriform fibres; with vessels. Tile cells absent. Pith without diaphragms. Root anatomy. Roots without velamen. Inflorescence, floral, fruit and seed morphology. The ... Testa without phytomelan. Micropyle not zigzag. Seedling. Coleoptile absent. Primary root persistent. Physiology, biochemistry. Nitrogen-fixing root nodules absent. Mustard-oils absent. Polyacetylenes not found. Berberine ...
delta-intkey.com

Angiosperm Families - Aceraceae Juss.
... cambium present; initially deep-seated, or superficial (usually). Nodes tri-lacunar. Primary vascular tissue in a cylinder, without separate bundles; centrifugal. Cortical bundles ... . Polyembryony recorded (in one species). Seedling. Germination phanerocotylar, or cryptocotylar (rarely). Primary root persistent. Physiology, biochemistry. Not cyanogenic. Alkaloids present (rarely), or absent. Iridoids ...
delta-intkey.com More from this site

Root Problems on Plants in the Garden and Landscape, HYG-3061-96
... region from the soil line to the junction of the primary roots (the crown area) can be examined on woody ... of demarcation between healthy and infected tissue (Figure 4). Prevention Root disorders and problems generally arise when plants are growing under ... is already damaged? Certain fungicides are somewhat effective against root and crown rotting fungi in nursery or greenhouse production programs ...
ohioline.osu.edu

Forestry Glossary: T is for ... taiga, tap root, and tree ring
... Ariadne's Forest Glossary Glossary: T is for ... taiga, tap root, and tree ring. by Ariadne Unst Glossary of T... Forest and Tree ... our page on the boreal forest. tap root (n.) A single thick vertical root. It is the primary root and follows the downward line of the ... in nutrients from decaying plants and bacterial material. Top-to-root ratio or root-to-shoot ratio The relative weights or volumes of ...
www.icogitate.com

Armillaria Root Rots
... the bark. How do root rots kill trees? Do they? Are the "killer fungi" the primary cause? What is meant by predisposition? Who is Sorauer, and why do we need to know something about his work? It is time to take a closer look at root ... numbers of living parenchyma cells usually surround root wood vessels. The living cells in root wood also "make" many substances essential ...
home.ccil.org

Phytophthora Root and Crown Rot of Fruit Trees, HYG-3029-95
... Tree Fruit Crops IPM Disease Identification Sheet No. 7. Control Control of Phytophthora crown and root rots is most successful using an integrated program of cultural practices, choosing the most resistant ... tree fruit crops. Planting trees on ridges or berms will raise their crowns above the primary zone of zoospore activity and provide an important margin of safety, especially in a wet ...
ohioline.osu.edu

Stem and Root Rot
... other factors that affect plant growth. Containerized plants often suffer root rot even though factors other than fungi may be the primary cause. Roots on potted plants can be checked for vigor ... to stem and root rots. See sections on Nematodes other than Root Knot, Southern Blight, Seedling Blight, Mushroom Root Rot, and Cotton Root Rot. All of these can cause stem and root rot type symptoms ...
plantpathology.tamu.edu

Stem & Root Anatomy
... Wayne's Word Index Noteworthy Plants Trivia Lemnaceae Biology 101 Botany Search Stem & Root Anatomy Cellular Structure of Vascular Plants ***All Images & Illustrations Copyright Protected*** See Article ... number of parenchyma cells and vascular bundles. This primary growth is due to a region of actively dividing meristematic cells called the "primary thickening meristem" that surrounds the apical ...
waynesword.palomar.edu

annosum_armillaria root rot
... is by hyphae (mycelium) through root contact or root grafts of an infected root and a healthy root. Excavated pine roots showing the extent ... affected. In central and eastern U.S. hardwoods are the primary hosts and typically display dieback symptoms, sparse crowns and branch ... page Spread of Armillaria Local spread is by rhizomorphs from root to root through soil. Spread within a tree is by mycelium ...
www.cals.ncsu.edu

OD13 - ORNAMENTAL DISEASE NOTE NO. 13 PHYTOPHTHORA ROOT ROT AND ITS CONTROL ON ESTABLISHED WOODY ORNAMENTALS
... fungus disease affecting a wide range of plants in North Carolina. Plants susceptible to Phytophthora root rot caused by P. cinnamomi include azalea, rhododendron, dogwood, Camellia japonica, Pieris, Taxus (yew), ... discoloration advances to the larger roots and eventually to the main stem. On rhododendron the primary symptoms are a rapid wilting and death of leaves. Leaves droop but remain attached ...
www.ces.ncsu.edu

These listings are filtered
View all for primary root