Seed dormancy

Introduction/Purpose There are many parts to a seed. First, there is the testa (seed coat). It is the outside layer protecting the inside of the seed. On the side of the seed, there is a tiny hole called the micropyle. Water can be taken through the hole when it is ready to germinate. Inside the seed near the micropyle, there is a root called a radicle. When the seed begins to grow the radicle will come out the micropyle. The seed coat can protect the seed from many factors such as freezing temperatures, heat, radiation, or acidity. Each seed has to go through the process of seed germination before they become a plant. With the right temperature and amount of water, the seed should start germinating within a couple days. The oxygen and water…

(FAE1) are the two genes of interest present in the plant pennycress. FAD2 is in the pathway that synthesizes the polyunsaturated linoleic (18:2) and linoleic (18:3) fatty acids from the monounsaturated oleic acid (18:1). Polyunsaturated fatty acids are undesirable in biodiesel because they confer oxidative instability, but greater energy (J.C. Sedbrook, et al, 2014). Targeting gene function reduction of FAD2 in Thlaspi arvense using RNA interference method, lowered linoleic/linoleic acid…

plant grows out from a seed. The most common example is the sprouting from a seed of an angiosperm, a flowering plant, or a gymnosperm that are seed-bearing plants. For a seed to germinate, few external conditions are in need to be met as well as internal conditions of the seed such as its dormancy, viability and its vitality to sprout. When these internal conditions are met, the external conditions at the time of seed germination plays a big role. First of all, enough water is needed. It is…

from a seed, and it is fundamental in the development of plants. There are factors that go into how a seed will germinate, one of the most important being temperature. It is said that temperature is an environmental factor that affects germination. Temperature can affect the percent and rate of germination in at least three different ways. The first being that since seeds deteriorate, unless germinated, and the rate of deterioration depends mostly on the moisture content and temperature. The…

Plant Hormones: DIAGRAMS/PICTURES NEEDED: Hormone Locations (color coordinated and showing relative concentrations) Auxin- Auxin is a hormone that’s main function is to promote cell elongation in stems, buds and roots and also plays a small part in the differentiation or new cells. Auxin is present in high concentrations in germinating fruits and seeds, but it is not yet known whether this high concentration of auxin is passed on from the mother or whether is is created but the developing…

Germination of Brassica rapa Seeds Germination is a vital stage in a plants life, but it also plays a significant role in other animals’ (including humans) life cycle. It is the process in which a new plant grows from a seed. Due to the fact that plants are autotrophs; they use the process of photosynthesis to transform sunlight and make their own food. Germination occurs in gymnosperms and angiosperms when the seed is using its own nutrients, before it is able to photosynthesize. “The plant’s…

Number of accumulated germinations of poppy for each concentration of Gibberellic acid (group data) Graph 3. Number of accumulated germinations of radish for each concentration of Gibberellic acid (class data) Notice that the trend are similar for all . Graph 4. Number of accumulated germinations of poppy for each concentration of Gibberellic acid (class data) Discussion Regarding to graph 1 for radish seeds, the data suggest that the seeds without any gibberellic acid are the ones…

Grass seed germination process and the important influencing factors Description: the germination is the most helpful process to grow a seed to a seedling and so on. There are various influencing factors which help the grass seed germination process to speed up. The way plants function are more complex one than any other organisms can be found in the world. Trees grow through the seeds and thus it needs to be germinated properly. With the help of germination, one can attain various benefits…

How does unused motor oil affect the percent germination of Romaine Lettuce (Lactuca sativa L. var. longifolia) seeds? Research Question How does unused motor oil affect the percent germination of Romaine Lettuce (Lactuca sativa L. var. longifolia) seeds? Background Germination in seeds is when the seed coat breaks revealing the embryo or sprout of the plant (Biology Online). For a seed to properly germinate it must have water, oxygen, and the correct temperature (BBC). Each type of seed has…

Tlig T (2007). Germination responses of Diplotaxis harra to temperature and salinity. Flora 203: 421–428 2a) Successful colonization of plant species is reliant on fruitful seed germination, which is consequently influenced by various environmental factors such as temperature, salinity and soil moisture. The authors hypothesized that temperature is a determining factor in relation to germination behaviour, affecting seeds’ tolerance to salt. Testing germination response in Diplotaxis harra…