Document
... the soil surface can regenerate easily, although cuttings buried deeper than about one inch (2 cm) fail to regenerate. Broken stems may persist on the soil surface for several weeks or months in low moisture conditions and easily form leaves after moisture becomes available. Flowering Both aerial (c ...
... the soil surface can regenerate easily, although cuttings buried deeper than about one inch (2 cm) fail to regenerate. Broken stems may persist on the soil surface for several weeks or months in low moisture conditions and easily form leaves after moisture becomes available. Flowering Both aerial (c ...
Global Pollinator Decline: A Literature Review - GRID
... We are currently enduring the 6 th mass extinction, losing between 1 - 10 % of biodiversity per decade , ...
... We are currently enduring the 6 th mass extinction, losing between 1 - 10 % of biodiversity per decade , ...
univERsity oF copEnhAGEn
... Insect damage to fruit and seed crops causes heavy losses of seed every year. Destruction of seed crops may be caused either by insects directly infesting the reproductive structures (flowers, fruits and seeds) or by insects attacking other parts of the tree, e.g. defoliators, which cause exhaustion ...
... Insect damage to fruit and seed crops causes heavy losses of seed every year. Destruction of seed crops may be caused either by insects directly infesting the reproductive structures (flowers, fruits and seeds) or by insects attacking other parts of the tree, e.g. defoliators, which cause exhaustion ...
Plants - Troy City Schools
... after a period of dry weather, the pond shrank. Some organisms at the edge were no longer in the water. The ones that were able to survive were now living on land. Scientists think that something like this took place in millions of watery environments over millions of years. Those few organisms that ...
... after a period of dry weather, the pond shrank. Some organisms at the edge were no longer in the water. The ones that were able to survive were now living on land. Scientists think that something like this took place in millions of watery environments over millions of years. Those few organisms that ...
Atlanta Orchid Society Newsletter
... veined, deciduous and the inflorescences arise from the upper nodes of the pseudobulbs. As is typical of most of the Catasetinae, flowers are unisexual. Under normal circumstances, all flowers on a given inflorescence with be of one sex; however it is not uncommon to have basal flowers of one sex, a ...
... veined, deciduous and the inflorescences arise from the upper nodes of the pseudobulbs. As is typical of most of the Catasetinae, flowers are unisexual. Under normal circumstances, all flowers on a given inflorescence with be of one sex; however it is not uncommon to have basal flowers of one sex, a ...
Document
... Showy rattlebox is a problem in row crops, pastures and roadsides (Figure 3). An annual legume, it is spread primarily by seed. It prefers sites that are open and disturbed, but as a legume these sites tend to be poor nutritionally. It is often found on roadside or pasture slopes that may be more or ...
... Showy rattlebox is a problem in row crops, pastures and roadsides (Figure 3). An annual legume, it is spread primarily by seed. It prefers sites that are open and disturbed, but as a legume these sites tend to be poor nutritionally. It is often found on roadside or pasture slopes that may be more or ...
INHS Purple Loosestrife
... wet herbicide. Equipment, clothing and personnel should be cleaned completely before entering other uninfested sensitive areas, if seeds were present in the treated area. It will be necessary to treat the same area again annually until missed plants and plants originating from the seed bank are elim ...
... wet herbicide. Equipment, clothing and personnel should be cleaned completely before entering other uninfested sensitive areas, if seeds were present in the treated area. It will be necessary to treat the same area again annually until missed plants and plants originating from the seed bank are elim ...
Stakeholder Presentation (Microsoft PowerPoint, 13448 Kb)
... and all are expected to die. Chalara ash dieback has the capacity to inflict on common ash what Dutch elm disease did to English elm in the 1970s. That is to essentially wipe out the species as forest, woodland, amenity and landscape tree in the UK.” (British and International Greenkeepers Associati ...
... and all are expected to die. Chalara ash dieback has the capacity to inflict on common ash what Dutch elm disease did to English elm in the 1970s. That is to essentially wipe out the species as forest, woodland, amenity and landscape tree in the UK.” (British and International Greenkeepers Associati ...
Martagon Lilies - North American Lily Society
... When leaves turn yellow and or wither in autumn, cut the stem off at ground level and remove any and all plant parts. As with other lilies, most gardeners dig and split their martagon bulbs in fall. Some gardeners dig their bulbs 45 days or so earlier. The theory here is that the bulbs will be able t ...
... When leaves turn yellow and or wither in autumn, cut the stem off at ground level and remove any and all plant parts. As with other lilies, most gardeners dig and split their martagon bulbs in fall. Some gardeners dig their bulbs 45 days or so earlier. The theory here is that the bulbs will be able t ...
Manual
... self-pollinating crops (for example, beans and peas), and open-pollinated varieties of some cross-pollinating crops (for example, pepper, cucumber and carrot). Commercial F1 hybrid varieties are popular among many vegetable growers today. However, the seed of hybrid fruits should not be saved, becau ...
... self-pollinating crops (for example, beans and peas), and open-pollinated varieties of some cross-pollinating crops (for example, pepper, cucumber and carrot). Commercial F1 hybrid varieties are popular among many vegetable growers today. However, the seed of hybrid fruits should not be saved, becau ...
How Seeds Travel - Project BudBurst
... Seeds contain a tiny embryo of a plant inside. The seed halves contain food which supplies energy and materials for growth until the plant grows its first leaves above the ground. Most plants produce a large number of seeds. This is because so few seeds survive. In order to ensure survival many seed ...
... Seeds contain a tiny embryo of a plant inside. The seed halves contain food which supplies energy and materials for growth until the plant grows its first leaves above the ground. Most plants produce a large number of seeds. This is because so few seeds survive. In order to ensure survival many seed ...
Keeper Trout: The Trichocereus Species: Taxonomic delineations
... It often seems that it is a matter of, as the English say, “picking the fly-shit out of the pepper” in an attempt at achieving dubious fame and immortality by linking one’s name to a plant’s formal designation. It might be stressed that there was evidently no attempt to publish descriptions of the i ...
... It often seems that it is a matter of, as the English say, “picking the fly-shit out of the pepper” in an attempt at achieving dubious fame and immortality by linking one’s name to a plant’s formal designation. It might be stressed that there was evidently no attempt to publish descriptions of the i ...
CO2, nitrogen, and diversity differentially affect seed production of
... resource would decrease with nitrogen deposition (perennial C4 grasses, legumes; Tilman 1984). Finally, we hypothesized that seed production responses to declining diversity would be similar to reproductive responses to nitrogen deposition, because declining diversity increases the availability of n ...
... resource would decrease with nitrogen deposition (perennial C4 grasses, legumes; Tilman 1984). Finally, we hypothesized that seed production responses to declining diversity would be similar to reproductive responses to nitrogen deposition, because declining diversity increases the availability of n ...
Document
... stems that grow to over 6 feet. The leaves are lance shaped with fine hairs, and are attached directly to the stems without petioles. Leaves can be opposite, whorled, or spiraled around the stem. Flowering/fruiting Purple flowers occur in axillary clusters that form a spike inflorescence. Each flowe ...
... stems that grow to over 6 feet. The leaves are lance shaped with fine hairs, and are attached directly to the stems without petioles. Leaves can be opposite, whorled, or spiraled around the stem. Flowering/fruiting Purple flowers occur in axillary clusters that form a spike inflorescence. Each flowe ...
The foraging behavior of granivorous rodents
... with a low density of seeds (Bowers, 1990; Brown, 1988; Mitchell and Brown, 1990; Price and Heinz, 1984). Previous research has shown that heteromyid rodents are more likely to induce apparent competition between two seed species if the mixed-species patches have a higher total density of seeds (bot ...
... with a low density of seeds (Bowers, 1990; Brown, 1988; Mitchell and Brown, 1990; Price and Heinz, 1984). Previous research has shown that heteromyid rodents are more likely to induce apparent competition between two seed species if the mixed-species patches have a higher total density of seeds (bot ...
Burke`s Backyard
... are probably the most desirable of all because of the rare, clear blue shade of their flowers. Alas, most of us have to be content with a photograph because these poppies are not happy in most parts of Australia. Blue poppies need a summer that’s mild to warm with mostly cool nights and a winter tha ...
... are probably the most desirable of all because of the rare, clear blue shade of their flowers. Alas, most of us have to be content with a photograph because these poppies are not happy in most parts of Australia. Blue poppies need a summer that’s mild to warm with mostly cool nights and a winter tha ...
Basic Botany - Clemson University
... Externally, two important areas on roots are the root cap and root hairs. The root cap, located at the outermost tip of the root, protects the meristem directly behind it. The root cap is thought to be the organ that perceives gravity and “communicates” to the root apical meristem which way is down. ...
... Externally, two important areas on roots are the root cap and root hairs. The root cap, located at the outermost tip of the root, protects the meristem directly behind it. The root cap is thought to be the organ that perceives gravity and “communicates” to the root apical meristem which way is down. ...
abot_92_813.1486_1491.tp
... to assess the functional significance and possible adaptive value of perianth persistence, a widespread but poorly understood floral feature. In addition, an improved understanding of the functionality of persistent perianth parts past flowering would allow one to address the more general issue of w ...
... to assess the functional significance and possible adaptive value of perianth persistence, a widespread but poorly understood floral feature. In addition, an improved understanding of the functionality of persistent perianth parts past flowering would allow one to address the more general issue of w ...
Angiosperm Reproduction Questions
... a. meiosis-fertilization-ovulation-germination b. fertilization-meiosis-nuclear fusion-formation of embryo and endosperm c. meiosis-pollination-nuclear fusion-formation of embryo and endosperm d. growth of pollen tube-pollination-germination-fertilization e. meiosis-mitosis-nuclear fusion-pollen Whi ...
... a. meiosis-fertilization-ovulation-germination b. fertilization-meiosis-nuclear fusion-formation of embryo and endosperm c. meiosis-pollination-nuclear fusion-formation of embryo and endosperm d. growth of pollen tube-pollination-germination-fertilization e. meiosis-mitosis-nuclear fusion-pollen Whi ...
Spanish heath (Erica lusitanica) and other Erica species, Managing
... rather than 4 and stiff leaves that are alternate instead of whorled or opposite. Examples are listed in the table below. Common heath (Epacris impressa) is generally an erect shrub to 1.2 m tall, with stiff pointed leaves up to 13 mm long that are alternate and well-spaced. Flowers red, pink or whi ...
... rather than 4 and stiff leaves that are alternate instead of whorled or opposite. Examples are listed in the table below. Common heath (Epacris impressa) is generally an erect shrub to 1.2 m tall, with stiff pointed leaves up to 13 mm long that are alternate and well-spaced. Flowers red, pink or whi ...
Factors affecting the relationship between seed removal and seed
... 2005; López-Barrera et al. 2005; Jurado et al. 2006; Salvande et al. 2006; Lopez and Terborgh 2007). If seeds are removed exclusively by animals that are only seed predators (i.e., they provide no dispersal benefit to the plant), then removal rates and mortality rates may be directly related. Howev ...
... 2005; López-Barrera et al. 2005; Jurado et al. 2006; Salvande et al. 2006; Lopez and Terborgh 2007). If seeds are removed exclusively by animals that are only seed predators (i.e., they provide no dispersal benefit to the plant), then removal rates and mortality rates may be directly related. Howev ...
ABSTRACTS - POPBIO is a conference
... database, we now have the first overview of the worldwide extent and patterns of plant naturalizations. So far, this has revealed that plant naturalizations are not happening at random with respect to geography and taxonomy, and that bilateral trade plays a pivotal role in the distribution of natura ...
... database, we now have the first overview of the worldwide extent and patterns of plant naturalizations. So far, this has revealed that plant naturalizations are not happening at random with respect to geography and taxonomy, and that bilateral trade plays a pivotal role in the distribution of natura ...
Plants - Pace University ePortfolio
... soil. When seeds are placed in the soil, they need to sun. If the seeds are warm, that the will help to grow. The dark and cool temperature will not make the seeds grow. In order to prove this, I would place 3 seeds on a warm, moist paper towel and 3 seeds in a cool, dark temperature. I would observ ...
... soil. When seeds are placed in the soil, they need to sun. If the seeds are warm, that the will help to grow. The dark and cool temperature will not make the seeds grow. In order to prove this, I would place 3 seeds on a warm, moist paper towel and 3 seeds in a cool, dark temperature. I would observ ...
Stewartia in cultivation
... It would be interesting to survey the genetic variation of S. pseudocam ellia in cultivation and determine whether they are descended from one or two clones at the Arnold Arboretum. There is a need to expand and diversify the number of wild-origin S. pseudocamellia from Korea. Polly Hill Arboretum ...
... It would be interesting to survey the genetic variation of S. pseudocam ellia in cultivation and determine whether they are descended from one or two clones at the Arnold Arboretum. There is a need to expand and diversify the number of wild-origin S. pseudocamellia from Korea. Polly Hill Arboretum ...
Ecology of Banksia
The ecology of Banksia refers to all the relationships and interactions among the plant genus Banksia and its environment. Banksia has a number of adaptations that have so far enabled the genus to survive despite dry, nutrient-poor soil, low rates of seed set, high rates of seed predation and low rates of seedling survival. These adaptations include proteoid roots and lignotubers; specialised floral structures that attract nectariferous animals and ensure effective pollen transfer; and the release of seed in response to bushfire.The arrival of Europeans in Australia has brought new ecological challenges. European colonisation of Australia has directly affected Banksia through deforestation, exploitation of flowers and changes to the fire regime. In addition, the accidental introduction and spread of plant pathogens such as Phytophthora cinnamomi (dieback) pose a serious threat to the genus's habitat and biodiversity. Various conservation measures have been put in place to mitigate these threats, but a number of taxa remain endangered.