Dormancy Lab

The hypothesis behind this experiment is that the Gibberellic acid has a positive growth effect on the plant and causes it grow larger in height.

Abstract: It is important to understand the consequences of elevated light on the reproductive process of kidney beans. The main objective of this research work is to determine how light affects the seed germination in plants. Through our research we concluded that the seeds that were kept in dark were more germinated than the ones that were exposed to light. On bases of p value we can say that there is a significant difference in seed germination in light and dark condition.

The results observed do not correspond with the outcome predicted by the hypothesis. Despite the nature of the subjects of the experiments, no substantial growth was observed. Only one seed of the 36 planted germinated, and it could only survive for a period of a week. The one seed that germinated reach a height of 1.2 cm. Table 1 presents the average growth observed in each quad. Each quad had a total of 12 seeds. No seeds were removed during the course of the experiment.

There are many ways to obtain seeds to grow flowers in the springtime, but not all seeds were created equal. Sunflower seeds, for example, can be bought at a garden store in a packet for $1.5 dollars per 6 gram packet, but they can also be found in bird seed for $3.53 dollars per 10 pounds. This experiment intends to find if the germination of a store bought packet of sunflower seeds matches the germination rate of sunflower seeds obtained from a bag of bird seed. While both seeds will germinate, it is believed that the bird seed will not be as robust in growth as the garden seed, due to the fact that the garden seed is made to be grown, while the bird seed is made for consumption.

We have learned in classes that germination is different for all plants and I want to work with plants

METHODS/PROCEDURES: In the beginning of the experiment, pea seeds were used in order to perform the experiment. It was extremely important to acquire good, dry, and viable seeds so the process of germination could occur. A handful of these healthy seeds worked best in assisting the experiment. The seeds ability to germinate was a vital information needed to determine the outcome of the experiment.

B. oblongifolia retains its seed-bank within the woody infructescences or cones, serotiny is a phase used widely for a canopy seed bank (Whelan 1996). Serotiny, an ecological adaptation that are seen in some seed plants, it under goes a response from a environmental trigger, such as fire to release their seeds, rather than spontaneously. The seeds are released by fruit structure called follicles, the follicles are closed until the presence of heat from fire, once the heat has reached the follicles they open and the seed hits the ground (Gill 1976). B. oblongifolia is a resprouter species, which enables them to resprout from their adult self, after fire, then the seeds also start growing after fire.

24 plants of the species Arabidopsis thaliana were grown at two temperatures (20°C and 24°C) in Percival growth chambers, half at 20°C and half 24°C. The plants were randomized into a design that consisted of 12 flats in two growth chambers. The seedlings were then transferred to three inch pots on standard ProMix potting soil and bottom watered in their trays, two times per week to assure that the potting mix remained moist. Each group will have two different accessions; Natural Population A and Natural Population B. Natural Population A represents species extracted from Market Baden, Germany. Natural Population B represents species extracted from Merzhausen, Germany. Each accession will have six plants growing under 20°C and 24°C. All 24 plants were then looked at to measure the rosette size, the distance from the center stalk to the edge of the leaves. All measurements were reported in centimeters using a ruler. The plants were measured in two spans that were

The purpose of this experiment is to assess and analyze pea plant response, and potential growth, to the hormones Auxin and Gibberellin. Six pea seeds were used to ascertain the results, two of which were utilized as a control group while the other four contained either Auxin or Gibberellin, in pairs, respectively. Given ample amounts of light, non-acidic soil and saturated in water twice a week, all of the seeds were observed over a one month period and data was recorded weekly. Results of the experiment show that only one of each pair of pea plants grew. After four weeks, seed #1 of the pea plant containing three drops of Auxin grew to 105 millimeters, seed #2 of the control group grew to 95 millimeters, and seed #1 of the pea

Introduction: Seed germination is the process in which a plant grows from a seed, using internal stores of energy. This process utilizes enzymes, and metabolic pathways and is subsequently subject to the influences of many different conditions if placed in a particular area or condition. One of these is moisture around the seed and since the seed has very little water to begin with in its dormant state, it is necessary for it to absorb water for activity through the seed coat. After water is absorbed, starch reserves are used up and the seed coat ruptures as the seed becomes way too large for the small space. Moisture is needed to even activate the process of germination and any variation of this may play a role in creating different levels of germination and even different success stories for different plants. Another element is temperature and since the process of germination is made of many metabolic pathways created by enzymes, it is subject to temperature limitations in that the enzymes may denature if the seed is too hot or not have enough activation energy at all to catalyze the slow

Before plants can begin to grow with a shoot arising through the soil, they must go through the process of germination (“Starting to Grow”). Germination “is the process by which a dormant seed begins to sprout and grow into a seedling under the right growing conditions” (“Germination”). These growing conditions needed in order for seeds to start germination are water, appropriate temperature, and a sufficient location (“Starting to Grow”). While the seeds are in this first stage of growth, they solely rely on the food supplies they have preserved in the seed called the endosperm (“Starting to Grow”; Beal). This food source is used by the seedling until it is grown and has leaves to receive sunlight and produce food on its own through photosynthesis (“Starting to Grow”). Germination includes seeds pushing “down into the soil to anchor the new plant and to absorb water and minerals from the soil” (“Starting to Grow”). The stem of the plant grows up towards the sunlight and eventually breaks through the surface of the earth to begin its life above soil (“Starting to Grow”). This concludes the process of germination for the seedling.

Germination process for acacia species takes variety of factors and not necessarily that all species would take one coherent measures in order to germinate. Acacia falcata is one of the species for which the germination process could be easily being noted through treatment of boiling water. Although keeping in check that other suitable methodology can be taken to find results. Through several research conducted in the area of germination in acacia, it is now transparent that varieties of acacia seeds remain dormant in the soil and years may elapse until they all the viable seeds germinate. According to (Harding, 1940), the reason behind this dormancy is due to the coat of the seed of many acacia species to be thick, hard and highly polished. Hence reducing the moisture penetration to be a very slow process in natural conditions. According to the research in (Harding, 1940), it has been immensely shown that boiling water can improve the germination rate of acacia species. Particularly, Acacia pycnantha which was shown to highly germinate when dipped in boiled water for 5 seconds which had a percentage of 72.5%. However further study in (Harding, 1940) showed that Acacia pycnantha showed

Before a seed can germinate it must first shed the seed coat, a protective outer layer that protects the seed from parasites, injury, and unfavorable temperatures. Inside the seed coat is the embryo which contains the root and first leaves of the plant, called cotyledons. After the seed coat has been shed the root emerges first so that it can absorb water and nutrients. After the roots have come out of the embryo the cotyledons will follow. Some seeds need certain conditions to germinate and go

The materials and methods required for this study is plant material, plant culture, Temperature treatments.

The nematicidal effect of aqueous extracts of plant viz., P. hysterophorus, C. citrates, E. crassipes, M. deliciosa and T. cardifolia showed in Table (3) against the juvenile penetration in the roots of brinjal seedlings. The minimum penetration of second stage juvenile of M. incognita observed by P. hysterophorus 38, 33, 29 followed by C. citrates 43, 40, 36, E. crassipes 46, 43, 38 and M. deliciosa 49, 47, 42 after 3 days at the doses of 5g, 10g and 15g. While maximum penetration of second stage juvenile showed by T. cardifolia 53, 49, 44 at the same dose. Higher doses of all five plants viz., P. hysterophorus, C. citratus, E. crassipes, M. deliciosa and T. cardifolia were preventing the penetration of second stage juvenile in the roots