Botany online 1996-2004. No further update‚ only historical document of botanical science! Gibberellins In 1926 studied the Japanese E. KUROSAWA a rice disease that is known as the ‘foolish seedling’-disease in Japan. The plants grow extremely fast‚ look spindly and pale and break off easily. KUROSAWA detected that the reason for this abnormal growth is a substance that is secreted by a parasitic fungi (Fusarium moniliforme = Gibberella fujikuroi). It was termed gibberellin. During the thirties
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highly concentrated form that that is potent and highly effective. What it does: - induces the closure in stomata to prevent transpiration and water loss - prevents fruit ripening - promotes seed dormancy by stopping cell growth and seed germination -stops synthesis of Kinetin nucleotide -Kinetin: cytokinin that promotes cell division -down regulate enzymes needed for photo synthesis -dials down growth to levels just needed for survival to prevent water loss Where
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1. The radish plant growth within the tap water petri dish grew so well it started to lift the lid off the dish. The results from the Acid Rain (50% vinegar solution) did not allow any radish seeds to germinate. There were never signs of seed germination while observing the seeds over a three week period. In the petri dish labeled Acid Rain‚ 0 out of 10 seeds sprouted into plant growth as seen in Figure 5.2. The results from the effects of acid rain are compared on Figures 5.1 and 5.2.
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it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle length. Our data indicated that seed germination decreased as concentration increased‚ demonstrated by our dramatic difference between the percentage of seeds germinated in our control group (0%) and the percentage of seeds germinated
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The Effect of Varying Dosages of Gamma Radiation on the Growth of Corn (Zea mays L.)1 Montalbo‚ Josephine M. A- 1L September 7‚ 2013 1 A scientific paper submitted in partial fulfillment of the requirements in Genetics laboratory under Prof. Cheryl D. Agdaca‚ 1st semester‚ A.Y. 2013-2014. ABSTRACT Exposure of corn plants to ionizing radiation such as gamma radiation can induce mutation. The purpose of this study was to
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The purpose of my experiment is to determine the effect of acid rain on seed germination. I chose this idea for a project because I have heard that acid rain is becoming a more prominent factor‚ around the world‚ due to pollution. I see reports of this in books and websites I ’ve visited‚ as well as news articles I have read. LITERATURE REVIEW http://www.selah.k12.wa.us/soar/sciproj99/CodySciProj.html The germination test results from glass labeled “Trial 1” (100% water)‚ and “Trial 5” (highest
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alkaline levels‚ the root growth during germination is affected. The purpose of this experiment was to observe what type of substance‚ acidic or basic‚ increases the growth of roots during the germination process of Cacurbita moschata‚ Beta vulgaris‚ and Capsicum annuum. Previous research has shown that water with a rather neutral pH level of 7 is best for plant germination and growth and that pH levels more acidic or basic did not show much plant germination. The hypothesis was that if the acidity
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removed the seeds from the pod. To start the germination process‚ a moistened piece of filter paper was placed into a petri dish. 40 seeds were neatly placed into each petri dish until there were no seeds remaining. Once all the seeds were placed in the petri dish‚ the petri dishes were placed in a plastic bag and set to germinate for approximately 48 to 96 hours in the window at room temperatures. Results Table 1. F2 Generation Seed Germination Color of Seedling | Number of Seedlings |
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Prakash was briefed that the shade nets would prevent virus causing pests to enter the structure‚ the portray reduce the root damages in seedlings; decrease excess water retention at base and the media which is light weight would promote excellent germination and growth. As expected‚ he got quality seedlings which were very much in demand. He slowly started to grow seedlings in the ancestral land and today the full 2 ½ acre is under quality vegetable seedling production. | | Realizing the need
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Purpose: To see if the population density affect the growth (mass) and germination of individuals of two species growing alone and in mixed species groups. Hypothesis: If planted like treatment 1 (8 collards) and 4 (8 radish) then it will have a higher mass and a greater germination percentage. If the plant is planted with a smaller population density and has intraspecific competition then the radish and collard will have higher germination percentages and mass averages. Constants: Pots‚ temperature‚ soil
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