Why does salinity pose such a difficult problem for plant breeders?
... surprising that salts affect a significant proportion of the world’s land surface. These saltaffected areas fall broadly into two categories: sodic and saline. Sodic soils are dominated by excess sodium on exchange sites and a high concentration of carbonate/bicarbonate anions; they have a high pH ( ...
... surprising that salts affect a significant proportion of the world’s land surface. These saltaffected areas fall broadly into two categories: sodic and saline. Sodic soils are dominated by excess sodium on exchange sites and a high concentration of carbonate/bicarbonate anions; they have a high pH ( ...
See pdf regarding this weed - WSU Extension
... net-patterned seed coat. They can remain viable in the soil for three or more years. Sulfur cinquefoil is one of the first plants to emerge in the spring, and it takes advantage of its early emergence to become established, enhancing its competitiveness. Sulfur cinquefoil is drought tolerant and spr ...
... net-patterned seed coat. They can remain viable in the soil for three or more years. Sulfur cinquefoil is one of the first plants to emerge in the spring, and it takes advantage of its early emergence to become established, enhancing its competitiveness. Sulfur cinquefoil is drought tolerant and spr ...
BSI_V41(2). - BSI Journal Archive
... the base of the spike, shorter than the sterile part, which is 5—10cm long, foliaged; 1 cm above the base an adaxial, bicarinate prophyll, to 5 cm long and 3.5 cm wide, waxy, violet-tipped; the upwards-following sterile bracts are also carinate. Fertile floral bracts ecarinate, obtuse, to 5 cm long ...
... the base of the spike, shorter than the sterile part, which is 5—10cm long, foliaged; 1 cm above the base an adaxial, bicarinate prophyll, to 5 cm long and 3.5 cm wide, waxy, violet-tipped; the upwards-following sterile bracts are also carinate. Fertile floral bracts ecarinate, obtuse, to 5 cm long ...
Atlanta Orchid Society Newsletter
... forcefully eject their pollinarium when triggered by the pollinator. Each species is pollinated by a specific species of male Euglossine bee, a fascinating adaptation in itself. These plants are epiphytes in lowland, moist to wet forest from sea level to less than 600 meters. Plants should be grown ...
... forcefully eject their pollinarium when triggered by the pollinator. Each species is pollinated by a specific species of male Euglossine bee, a fascinating adaptation in itself. These plants are epiphytes in lowland, moist to wet forest from sea level to less than 600 meters. Plants should be grown ...
Radishes in the Garden - Utah State University Extension
... flowering and low yields. Fertilization: Apply ¼ cup per 10 foot of row of a nitrogen-based fertilizer (21-0-0) after emergence to encourage rapid plant growth. Place the fertilizer to the side of the plants and irrigate it into the soil. ...
... flowering and low yields. Fertilization: Apply ¼ cup per 10 foot of row of a nitrogen-based fertilizer (21-0-0) after emergence to encourage rapid plant growth. Place the fertilizer to the side of the plants and irrigate it into the soil. ...
MAGNOLIOPHYTA (FLOWERING PLANTS): A LOGICAL AND
... general are lacking in them. The importance of a petal was understood by some of the advanced apetalous plants which developed colored bracts or sepals. Though the classification of Cronquist6, Takhtajan7 or Kubitzki8 are widely accepted, they are of little use for a student to identify the plants i ...
... general are lacking in them. The importance of a petal was understood by some of the advanced apetalous plants which developed colored bracts or sepals. Though the classification of Cronquist6, Takhtajan7 or Kubitzki8 are widely accepted, they are of little use for a student to identify the plants i ...
Canola - Morrisville State College
... • There are two types of canola varieties, the Argentine type of the species Brassica napus and the Polish type of the species Brassica rapa. Argentine varieties have a higher yield potential and are also taller and have a higher oil content than Polish varieties. Argentine varieties require about 9 ...
... • There are two types of canola varieties, the Argentine type of the species Brassica napus and the Polish type of the species Brassica rapa. Argentine varieties have a higher yield potential and are also taller and have a higher oil content than Polish varieties. Argentine varieties require about 9 ...
Green Genius - Be Amazing! Toys
... 1. Rinse out your empty shaker cup, then pour a little of the green liquid back into the shaker cup (you’ll need about a centimeter.) 2. Cut a strip of the filter paper that is about one inch wide and four inches long. Fold the edge of the filter paper so that it just hangs over the edge of the cup. ...
... 1. Rinse out your empty shaker cup, then pour a little of the green liquid back into the shaker cup (you’ll need about a centimeter.) 2. Cut a strip of the filter paper that is about one inch wide and four inches long. Fold the edge of the filter paper so that it just hangs over the edge of the cup. ...
Morphological evolution in land plants
... Figure 1. Phylogenetic relationships between the major groups of extant plants. Key events that occurred during plant evolution are indicated; in cases where enough functional data are not available, the minimum origin is indicated by an arrowhead. The estimated divergence times are indicated in mil ...
... Figure 1. Phylogenetic relationships between the major groups of extant plants. Key events that occurred during plant evolution are indicated; in cases where enough functional data are not available, the minimum origin is indicated by an arrowhead. The estimated divergence times are indicated in mil ...
Course: AG-FL-01.462 Floriculture Production and Management
... It is a process by which plants combine water and carbon dioxide in the presence of chlorophyll and sunlight and produce carbohydrates and release oxygen. The chemical equation looks ...
... It is a process by which plants combine water and carbon dioxide in the presence of chlorophyll and sunlight and produce carbohydrates and release oxygen. The chemical equation looks ...
PROTISTA AND FUNGI
... nutrients from dead organic compounds (saprobes or decomposers), but some draw their nourishment from living plant or animal material (parasites). Evolutionary history suggests they are more closely related to animals than plants but historically they have been taught in botany courses and due to ti ...
... nutrients from dead organic compounds (saprobes or decomposers), but some draw their nourishment from living plant or animal material (parasites). Evolutionary history suggests they are more closely related to animals than plants but historically they have been taught in botany courses and due to ti ...
Pollination & Fertilization
... When the pollen sac matures and splits open, it releases thousands of pollen grains. After being released from the anther, pollen is carried by the wind or animals and can find its way to the sticky stigma of the same or another flower. ...
... When the pollen sac matures and splits open, it releases thousands of pollen grains. After being released from the anther, pollen is carried by the wind or animals and can find its way to the sticky stigma of the same or another flower. ...
In Vitro Conservation Including Rare and Endangered Plants
... Importance of in vitro techniques A major objective of current plant cell and tissue culture work is more efficient exploitation of specific properties of plant genotypes. Progress in each of several areas, for example, the generation of variation, the selective transfer of genes, the identificatio ...
... Importance of in vitro techniques A major objective of current plant cell and tissue culture work is more efficient exploitation of specific properties of plant genotypes. Progress in each of several areas, for example, the generation of variation, the selective transfer of genes, the identificatio ...
Elisha`s Tears
... plant produces berries which are eaten by birds and other animals, who spread them further afield. The berries are also thought to be potentially poisonous to some animals. Elisha’s tears also strikes readily from broken fragments of stalk or root, which allows it to move down rivers and creeks alar ...
... plant produces berries which are eaten by birds and other animals, who spread them further afield. The berries are also thought to be potentially poisonous to some animals. Elisha’s tears also strikes readily from broken fragments of stalk or root, which allows it to move down rivers and creeks alar ...
garden wise - Pacific Northwest Invasive Plant Council
... vines such as old man’s beard and silverlace vine are commonly used on arbors and trellises. Yet these vines can establish in forests and along riverbanks where they can smother shrubs and trees and form dense mats in the understory, displacing native flora. Both vines produce thousands of tiny seed ...
... vines such as old man’s beard and silverlace vine are commonly used on arbors and trellises. Yet these vines can establish in forests and along riverbanks where they can smother shrubs and trees and form dense mats in the understory, displacing native flora. Both vines produce thousands of tiny seed ...
Selecting and Planting Trees and Shrubs 1
... should be well established so that the root ball stays intact when the container is removed; however, the plant should not be root-bound. Root-bound plants have a mass of roots circling near the outside surface of the container medium and may present difficulty in establishment in the landscape. Roo ...
... should be well established so that the root ball stays intact when the container is removed; however, the plant should not be root-bound. Root-bound plants have a mass of roots circling near the outside surface of the container medium and may present difficulty in establishment in the landscape. Roo ...
PDF - Asian Online Journal Publishing Group
... Guavas are plants in the myrtle family (Myrtacease). Common names are guava (English), gioba (Hausa), goifa (Yoruba), gova (Igbo), guayaba (Spanish), goyave (French), goeajaaba (Dutch), [1]. A native of tropical America, it is now planted as a fruit tree in West Africa. The seeds are distributed by ...
... Guavas are plants in the myrtle family (Myrtacease). Common names are guava (English), gioba (Hausa), goifa (Yoruba), gova (Igbo), guayaba (Spanish), goyave (French), goeajaaba (Dutch), [1]. A native of tropical America, it is now planted as a fruit tree in West Africa. The seeds are distributed by ...
Biological costs and benefits to plant–microbe interactions in the
... rhizobacteria operate by a wide variety of mechanisms, including N2 fixation, enhanced solubilization of P, and phytohormone production (Vessey, 2003; Barrea et al., 2005). Traditionally, pseudomonads have been considered to be important rhizosphere organisms (Lugtenberg et al., 2001). The term ‘pse ...
... rhizobacteria operate by a wide variety of mechanisms, including N2 fixation, enhanced solubilization of P, and phytohormone production (Vessey, 2003; Barrea et al., 2005). Traditionally, pseudomonads have been considered to be important rhizosphere organisms (Lugtenberg et al., 2001). The term ‘pse ...
Journal Biology 2004 3 (1).pmd - Mongolian Journal of Biological
... The large group of plants with powerful water conserving types of physiology and biochemistry called Crassulacean Acid Metabolism (CAM) are absent from deserts of Central Asia, but present in other deserts of the world. The deserts of America, Africa and Australia contain large numbers of huge, even ...
... The large group of plants with powerful water conserving types of physiology and biochemistry called Crassulacean Acid Metabolism (CAM) are absent from deserts of Central Asia, but present in other deserts of the world. The deserts of America, Africa and Australia contain large numbers of huge, even ...
BIO 1C Study Guide 2: Seedless non vascular, seedless vascular
... BIO 1C Study Guide 2: Seedless non vascular, seedless vascular, Gymnosperms, Angiosperms (Anthophyta), Plant Growth and development Remember that this is a guide only. DO NOT rely on it solely for your studying. Use your notes, study sessions and the book. I cannot possibly put all the necessary det ...
... BIO 1C Study Guide 2: Seedless non vascular, seedless vascular, Gymnosperms, Angiosperms (Anthophyta), Plant Growth and development Remember that this is a guide only. DO NOT rely on it solely for your studying. Use your notes, study sessions and the book. I cannot possibly put all the necessary det ...
PDF - Penn State Extension
... do well in partial shade to full sun. Daylilies need soil that is high in organic matter but is not overly fertilized (high fertilization will mean more leaves and fewer flowers). If you pick the right lilies you could have blooms from spring right through the fall. Heuchera sanguinea. Coral Bells g ...
... do well in partial shade to full sun. Daylilies need soil that is high in organic matter but is not overly fertilized (high fertilization will mean more leaves and fewer flowers). If you pick the right lilies you could have blooms from spring right through the fall. Heuchera sanguinea. Coral Bells g ...
Herbaceous Weed Control Purple Loosestrife – Lythrum salicaria
... a spike-like arrangement. Other similar natives include Fireweed, Swamp Loosestrife, and Blue Vervain. Before control activities begin be sure you are correctly identifying Purple Loosestrife. Control Several control methods have been attempted with varying degrees of success. First land managers mu ...
... a spike-like arrangement. Other similar natives include Fireweed, Swamp Loosestrife, and Blue Vervain. Before control activities begin be sure you are correctly identifying Purple Loosestrife. Control Several control methods have been attempted with varying degrees of success. First land managers mu ...
seed - ScienceToGo
... Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Plants of the Butterfly Garden (part 2)
... There are about a dozen species in our area, very similar in appearance and difficult to identify. ...
... There are about a dozen species in our area, very similar in appearance and difficult to identify. ...
History of botany
The history of botany examines the human effort to understand life on Earth by tracing the historical development of the discipline of botany—that part of natural science dealing with organisms traditionally treated as plants.Rudimentary botanical science began with empirically-based plant lore passed from generation to generation in the oral traditions of paleolithic hunter-gatherers. The first written records of plants were made in the Neolithic Revolution about 10,000 years ago as writing was developed in the settled agricultural communities where plants and animals were first domesticated. The first writings that show human curiosity about plants themselves, rather than the uses that could be made of them, appears in the teachings of Aristotle's student Theophrastus at the Lyceum in ancient Athens in about 350 BC; this is considered the starting point for modern botany. In Europe, this early botanical science was soon overshadowed by a medieval preoccupation with the medicinal properties of plants that lasted more than 1000 years. During this time, the medicinal works of classical antiquity were reproduced in manuscripts and books called herbals. In China and the Arab world, the Greco-Roman work on medicinal plants was preserved and extended.In Europe the Renaissance of the 14th–17th centuries heralded a scientific revival during which botany gradually emerged from natural history as an independent science, distinct from medicine and agriculture. Herbals were replaced by floras: books that described the native plants of local regions. The invention of the microscope stimulated the study of plant anatomy, and the first carefully designed experiments in plant physiology were performed. With the expansion of trade and exploration beyond Europe, the many new plants being discovered were subjected to an increasingly rigorous process of naming, description, and classification.Progressively more sophisticated scientific technology has aided the development of contemporary botanical offshoots in the plant sciences, ranging from the applied fields of economic botany (notably agriculture, horticulture and forestry), to the detailed examination of the structure and function of plants and their interaction with the environment over many scales from the large-scale global significance of vegetation and plant communities (biogeography and ecology) through to the small scale of subjects like cell theory, molecular biology and plant biochemistry.