Olorunmaiye‚ P. M. COURSE CONTENT: Weed definition‚ classification‚ and economic importance.Weed biology: reproduction‚ mechanism of weed seed dissemination‚ prolificity‚ survivability‚ persistence and colonisation. Seed viability‚ dormancy. Germination‚ adaptability to environment growth and feeding habits. Parasitic weeds. Weed management: prevention‚ eradication and control. Methods of weed control: cultural‚ chemical‚ biological and integrated. Herbicides: classification‚ formulation‚ methods
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Alexandre Guay A.P. Literature The Cycle of Nature The term "germinal" does not make any appearance in Emile Zola ’s novel‚ even though it is used as the title. The word itself represents the seventh month of the Republican calendar‚ which starts in March and ends in the middle of April. The Republican calendar is a calendar that was created by the French government during the French Revolution. Used for twelve years‚ the calendar had twelve months that had a certain relationship with the
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(1997). Seed Germination and Dormancy. Plant Cell Journal‚ 9(7)‚ 1055-1066. Bot‚ A. (2008). ABA Inhibits Embryo Cell Expansion and Early Cell Division Events During Coffee Seed Germination. Plant Physiol‚ 102(3)‚ 425-433. Martínez S.‚ Puigdomènech P. (1986). Regulation of Gene Expression in Developing Zea mays Embryos: Protein Synthesis during Embryogenesis and Early Germination of Maize. Plant Physiol‚ 82(2)‚ 543–549. Schopfer‚ P.‚ Plachy‚ C. (1985). Control of Seed Germination by Abscisic Acid:
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Biology 101 1 November 2013 Cellular Respiration in Peas Part A: Abstract: This report examines Cellular Respiration and its functions as well as its function in germinating and non-germination peas. Cellular Respiration can best be described as a complicated string of chemical reactions. The complete Cellular respiration process begins with Glucose being oxidized‚ and the potential energy is transferred to the ATP molecule. The ATP molecule is now free to supply energy to the various
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Ceratopteris richardii‚ provided for visual identification of this transition. Spores of different densities were inoculated‚ cultured‚ and observed in germination and sexual expression. We estimated higher spore densities increase percentages of sexually expressed gametes‚ male and hermaphrodite; and concluded that spore density has a direct effect on germination and sexual expression numbers. The ability to observe the spore to gamete transition leads to opportunity in manipulation of gametes for biological
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thinks that plants use some kind of sound indicating to talk with each other and depending on if it is good or bad it may allow the weaker plant to live or die. What’s even more remarkable is that the scientist believes the talking can happen at the germination stage. She showed with some chili pepper‚ basil and fennel plants. She began by planting the chili seeds in isolated dishes next to fennel plants. Not many germinated. Then she conducted the same experiment next to some basil plants. Sure enough
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aqueous methanol extracts of Mangifera indica L. leaves The aqueous methanol extracts obtained from mango leaves inhibited seed germination of radish and sand fescue‚ and inhibited seedling growth of root and shoot growth of radish‚ rapeseed‚ sand fescue and crabgrass (Figure 1 and 2). The extract obtained from 0.03 g dry weight of mango leaves inhibited 20 and 50 % germination of radish and sand fescue respectively‚ on day 4 (Figure 2). The extract obtained from 0.03 g dry weight of mango leaves inhibited
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50%‚ 75% & 100%). Each mixture of soil had a total of two kilograms. The mixtures were placed in different plastic pots. The plants were then transplanted to the soil mixtures after 15 days of germination. The heights of the plants were obtained every week. After the span 45 days (since the day of germination)‚ the plants were harvested and the heights and weight were taken. Results show that there is a significant difference between the mixtures made. In addition‚ Chinese cabbages that were planted
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EFFECTS OF NITROGEN FIXING PEA PLANTS (Pisum sativum) ON GROWTH OF CORN (Zea mays) Introduction Interactions among plant species‚ particularly negative ones‚ have been a concern in agriculture (Levene 1926‚ Russell 1961). Novoa (1981) suggested that it would be advantageous to rotate certain crops by season‚ grow certain crops together‚ or avoid growing certain crops on the same land. Observations indicated that some crops require specific types of nutrients in contrast to other crop
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Pollination and fission b. Pollination and fertilization d. Pollination and sporulation 33. Which of the following sequences shows the correct order of events that occur after an insect brings pollen to a flower? a. germination‚
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