DOCX version 3874 KB - Office of the Gene Technology Regulator
... B. napus and B. juncea, general descriptions of their morphology, reproductive biology, biochemistry, and biotic and abiotic interactions. This document also addresses the potential for gene transfer to occur to closely related species. The purpose of this document is to provide baseline information ...
... B. napus and B. juncea, general descriptions of their morphology, reproductive biology, biochemistry, and biotic and abiotic interactions. This document also addresses the potential for gene transfer to occur to closely related species. The purpose of this document is to provide baseline information ...
PDF version 457 KB - Office of the Gene Technology Regulator
... latex is harvested by scarifying the green skin of the fruit to induce latex flow, which is allowed to dry before collection for processing (Nakasone & Paull 1998). The principal producers of crude papain are Zaire, Tanzania, Uganda and Sri Lanka and the principal importing countries are the United ...
... latex is harvested by scarifying the green skin of the fruit to induce latex flow, which is allowed to dry before collection for processing (Nakasone & Paull 1998). The principal producers of crude papain are Zaire, Tanzania, Uganda and Sri Lanka and the principal importing countries are the United ...
The Biology of Hordeum vulgare L. (barley)
... Until the late nineteenth century, all barleys existed as highly heterogeneous landraces adapted to different environments. Over the past 100 years, the landraces have mostly been displaced in agriculture by pureline varieties with reduced genetic diversity (Nevo 1992). Extensive cultivation, intens ...
... Until the late nineteenth century, all barleys existed as highly heterogeneous landraces adapted to different environments. Over the past 100 years, the landraces have mostly been displaced in agriculture by pureline varieties with reduced genetic diversity (Nevo 1992). Extensive cultivation, intens ...
The Biology of Ananas comosus (Pineapple)
... document is to provide baseline information about the parent organism for use in risk assessments of genetically modified (GM) A. comosus that may be released into the Australian environment. In this document, pineapple is used to refer to A. comosus and its cultivars, and to hybrids of A. comosus w ...
... document is to provide baseline information about the parent organism for use in risk assessments of genetically modified (GM) A. comosus that may be released into the Australian environment. In this document, pineapple is used to refer to A. comosus and its cultivars, and to hybrids of A. comosus w ...
ABOUT THE ORIGIN OF CYCADS AND SOME ENIGMATIC
... plant group are hampered by the poor fossil record. Since 1999 the author has recovered large quantities of well-preserved cycadalean remains and other enigmatic strobili and fructifications from Early Middle to Middle Triassic (Anisian) sediments. Therefore it is now possible to view their unusual ...
... plant group are hampered by the poor fossil record. Since 1999 the author has recovered large quantities of well-preserved cycadalean remains and other enigmatic strobili and fructifications from Early Middle to Middle Triassic (Anisian) sediments. Therefore it is now possible to view their unusual ...
Stress Physiology in Cotton
... temperatures reach about 35oC, growth rate and photosynthesis of cotton begins to decrease (Bibi et al., 2008, 2010). However, average daily maximum temperatures during flowering and boll development in the US Cotton Belt are almost always above 35°C, and well above the optimum for photosynthesis. R ...
... temperatures reach about 35oC, growth rate and photosynthesis of cotton begins to decrease (Bibi et al., 2008, 2010). However, average daily maximum temperatures during flowering and boll development in the US Cotton Belt are almost always above 35°C, and well above the optimum for photosynthesis. R ...
Biology of Maize
... involving Indian and Caribbean, and Indian and US germplasm showed highest expression of heterosis over better parent (47-54%) (Mukherjee and Dhawan, 1970). ...
... involving Indian and Caribbean, and Indian and US germplasm showed highest expression of heterosis over better parent (47-54%) (Mukherjee and Dhawan, 1970). ...
ONLINE JOURNAL - Passiflora Online
... and Buenos Aires, Argentina. From there one seed was forwarded to Merida, Venezuela. This species grows well under varying conditions, as demonstrated by flowering in deep shade, or in full sun in Australia, and it has flowered as far south as Buenos Aires and at the altitude of Merida. The plants o ...
... and Buenos Aires, Argentina. From there one seed was forwarded to Merida, Venezuela. This species grows well under varying conditions, as demonstrated by flowering in deep shade, or in full sun in Australia, and it has flowered as far south as Buenos Aires and at the altitude of Merida. The plants o ...
PDF - Biodiversity Advisor
... and even Galaxia Thunb. (both genera for species with radially symmetric flowers). John Ker Gawler (1804) adopted Lapeirousia in his then novel treatment of southern African Iridaceae in which he described the new genera Anomatheca Ker Gawl., Babiana Ker Gawl., Geissorhiza Ker Gawl., Hesperantha Ker ...
... and even Galaxia Thunb. (both genera for species with radially symmetric flowers). John Ker Gawler (1804) adopted Lapeirousia in his then novel treatment of southern African Iridaceae in which he described the new genera Anomatheca Ker Gawl., Babiana Ker Gawl., Geissorhiza Ker Gawl., Hesperantha Ker ...
Natural and Cultural History of Beargrass (Xerophyllum tenax)
... Beargrass is a herbaceous, rhizomatous plant with a perennial mass of narrow, long, basally clustered leaves (Hitchcock and Cronquist 1973). The plant can reproduce both vegetatively (by sprouting from the rhizome) and sexually (by flowering). The rhizome is a tuberous, semiwoody rootstock, 1 to 2 c ...
... Beargrass is a herbaceous, rhizomatous plant with a perennial mass of narrow, long, basally clustered leaves (Hitchcock and Cronquist 1973). The plant can reproduce both vegetatively (by sprouting from the rhizome) and sexually (by flowering). The rhizome is a tuberous, semiwoody rootstock, 1 to 2 c ...
3. maize - dbtbiosafety.nic.in
... Maize is a tall, determinate, monoecious, annual plant. It produced large, narrow, opposite leaves, borne alternatively along the length of stem. All maize varieties follow same general pattern of development, although specific time and interval between stages and total number of leaves developed ma ...
... Maize is a tall, determinate, monoecious, annual plant. It produced large, narrow, opposite leaves, borne alternatively along the length of stem. All maize varieties follow same general pattern of development, although specific time and interval between stages and total number of leaves developed ma ...
Interspecific hybridization by embryo rescue in the genus Cyclamen
... developed by wide cross. In wide cross, there is a crosssterility barrier related to reproductive isolation, and the barrier is divided into pre- and post-fertilization barriers. The pre-fertilization barrier, called cross-incompatibility, is a phenomenon in which no pollen germination occurs on the ...
... developed by wide cross. In wide cross, there is a crosssterility barrier related to reproductive isolation, and the barrier is divided into pre- and post-fertilization barriers. The pre-fertilization barrier, called cross-incompatibility, is a phenomenon in which no pollen germination occurs on the ...
Expanded Glossary of Cycad Terms
... anonymous (anon.). Pertaining to an author whose name is not known. antheridium. Structure of a plant’s gametophyte that forms male gametes. antherozoid, more commonly spermatozoid. Male gametes of plants. anthesis. Developmental stage in flowering, in which a flower is at its most receptive state, ...
... anonymous (anon.). Pertaining to an author whose name is not known. antheridium. Structure of a plant’s gametophyte that forms male gametes. antherozoid, more commonly spermatozoid. Male gametes of plants. anthesis. Developmental stage in flowering, in which a flower is at its most receptive state, ...
Life Cycle of a Pumpkin
... Pumpkin 4: The yellow powder is pollen. It takes a male and female flower to make a pumpkin. Pumpkin 5: It also takes bees to make pumpkins. They move the pollen from male flowers to female flowers. Pumpkin 1: When a bee visits the male flowers, the pollen sticks to the bee’s body and legs. Pumpkin ...
... Pumpkin 4: The yellow powder is pollen. It takes a male and female flower to make a pumpkin. Pumpkin 5: It also takes bees to make pumpkins. They move the pollen from male flowers to female flowers. Pumpkin 1: When a bee visits the male flowers, the pollen sticks to the bee’s body and legs. Pumpkin ...
The Biology of Hybrid Tea Rose
... Caninae results in a bias towards maternal inheritance and, in its most extreme form, leads to apomixis (see Section 4.1.3) where the progeny plant does not receive any genetic material from the pollen parent (Werlemark & Nybom 2005). In an effort to better develop a rose taxonomic system, scientist ...
... Caninae results in a bias towards maternal inheritance and, in its most extreme form, leads to apomixis (see Section 4.1.3) where the progeny plant does not receive any genetic material from the pollen parent (Werlemark & Nybom 2005). In an effort to better develop a rose taxonomic system, scientist ...
Green Plants Their Origin and Diversity
... It is useful to divide organisms into two classes according to the manner in which their needs for organic carbon are met. Those able to utilize simple molecules with single carbon atoms are termed autotrophs; those requiring more complex carbon compounds rich in energy (such as sugars) are termed h ...
... It is useful to divide organisms into two classes according to the manner in which their needs for organic carbon are met. Those able to utilize simple molecules with single carbon atoms are termed autotrophs; those requiring more complex carbon compounds rich in energy (such as sugars) are termed h ...
Biotic and abiotic factors that determine the emission of volatile organic
... pollinators and stimulate reproductive outcrossing. Floral scents act as chemical cues that enhance flower location by pollinators. They also provide information about the plant species, flower state, and available floral rewards. Some floral volatiles can play roles other than attraction, such as d ...
... pollinators and stimulate reproductive outcrossing. Floral scents act as chemical cues that enhance flower location by pollinators. They also provide information about the plant species, flower state, and available floral rewards. Some floral volatiles can play roles other than attraction, such as d ...
updating material of study subject flower growing (in
... Individual verbal inquiry, study achievements folder ...
... Individual verbal inquiry, study achievements folder ...
PDF
... soil cpnservatiol1 are accelJrable as feed to some class of livestock Grass'~s unpalatable to livestock are sometimes used on sites es pecially liable to soil erosion, such as dune areas, where the first objective is to establish and maintain a good vegetative cover. Quality tests for the forage gr ...
... soil cpnservatiol1 are accelJrable as feed to some class of livestock Grass'~s unpalatable to livestock are sometimes used on sites es pecially liable to soil erosion, such as dune areas, where the first objective is to establish and maintain a good vegetative cover. Quality tests for the forage gr ...
Aloe marlothii Berger: interactions between bird communities and a winter-flowering succulent
... benefitted from nectar. Stable nitrogen isotopes in whole blood may suggest that many nectar-feeding birds shift their trophic position during flowering. However, we interpret these results with caution because of insufficient knowledge on diet-tissue fractionation factors of wild birds and/or tempo ...
... benefitted from nectar. Stable nitrogen isotopes in whole blood may suggest that many nectar-feeding birds shift their trophic position during flowering. However, we interpret these results with caution because of insufficient knowledge on diet-tissue fractionation factors of wild birds and/or tempo ...
Basic Root Systems
... 4. Anchors the plant so that the plant does not get blown away by the wind or washed away by rain. The root keeps the plant at the same level within the soil and holds the topsoil in place around the root, stopping the soil from being carried away by wind and water. Let’s begin our learning by findi ...
... 4. Anchors the plant so that the plant does not get blown away by the wind or washed away by rain. The root keeps the plant at the same level within the soil and holds the topsoil in place around the root, stopping the soil from being carried away by wind and water. Let’s begin our learning by findi ...
Biology Document BIO1992-02 The Biology of Brassica rapa L.
... transferred from plant to plant primarily through physical contact between neighbouring plants. It can be also transferred over longer distance by wind and insects. To minimize contamination of B. rapa foundation seed plots, a distance of 400 metres is required from other contaminating source of B. ...
... transferred from plant to plant primarily through physical contact between neighbouring plants. It can be also transferred over longer distance by wind and insects. To minimize contamination of B. rapa foundation seed plots, a distance of 400 metres is required from other contaminating source of B. ...
The Story of an Organism: Common Milkweed
... flower buds (Figure 4). As the buds grow and gradually turn pink, the stout stem that carries them away from the main shoot extends diagonally upward. Each flower bud has, in turn, its own delicate stalk, which also lengthens, and the tight ball becomes a looser and larger sphere. All the individual ...
... flower buds (Figure 4). As the buds grow and gradually turn pink, the stout stem that carries them away from the main shoot extends diagonally upward. Each flower bud has, in turn, its own delicate stalk, which also lengthens, and the tight ball becomes a looser and larger sphere. All the individual ...
Boundless Study Slides
... • food deception a trickery method employed by some species of orchids in which only bright colors and perfume are offered to their pollinators with no food reward • grafting process of attaching part of a stem from one plant onto the root of another plant • gynoecium the set of a flower's pistils ( ...
... • food deception a trickery method employed by some species of orchids in which only bright colors and perfume are offered to their pollinators with no food reward • grafting process of attaching part of a stem from one plant onto the root of another plant • gynoecium the set of a flower's pistils ( ...
Pollination
Pollination is a process by which pollen is transferred from the anther to the stigma of the plant, thereby enabling fertilization and reproduction. It is unique to the angiosperms, the flower-bearing plants.In spite of a common perception that pollen grains are gametes, like the sperm cells of animals, this is incorrect; pollination is an event in the alternation of generations. Each pollen grain is a male haploid gametophyte, adapted to being transported to the female gametophyte, where it can effect fertilization by producing the male gamete (or gametes), in the process of double fertilization). A successful angiosperm pollen grain (gametophyte) containing the male gametes is transported to the stigma, where it germinates and its pollen tube grows down the style to the ovary. Its two gametes travel down the tube to where the gametophyte(s) containing the female gametes are held within the carpel. One nucleus fuses with the polar bodies to produce the endosperm tissues, and the other with the ovule to produce the embryo Hence the term: ""double fertilization"".In gymnosperms, the ovule is not contained in a carpel, but exposed on the surface of a dedicated support organ, such as the scale of a cone, so that the penetration of carpel tissue is unnecessary. Details of the process vary according to the division of gymnosperms in question.The receptive part of the carpel is called a stigma in the flowers of angiosperms. The receptive part of the gymnosperm ovule is called the micropyle. Pollination is a necessary step in the reproduction of flowering plants, resulting in the production of offspring that are genetically diverse.The study of pollination brings together many disciplines, such as botany, horticulture, entomology, and ecology. The pollination process as an interaction between flower and pollen vector was first addressed in the 18th century by Christian Konrad Sprengel. It is important in horticulture and agriculture, because fruiting is dependent on fertilization: the result of pollination. The study of pollination by insects is known as anthecology.