Gibberellin

Recombination and mutation are the motivation of evolution. Recombination is critical for repairing DNA lesions and for chromosomal pairing, and exchange during meiosis (Krejci et al. 2012). Recombination does not occur uniformly on the chromosomes of eukaryotes. Meiotic recombination in well studied yeast revealed that non-uniformity of recombination was observed when the frame of reference is an entire chromosome, multigene region and a pair of genes or a small region upstream of a gene…

While in rice an enzyme that is defective is encoded in the pathway of gibberellin biosynthetic. These genes were responsible for the reduction in lodging (Hedden, 2003). Table 2 Changes in production input in India, Pakistan and china due to the green revolution adapted from (Wu & Butz, 2004). Changes in Product Quality The…

An Investigation into the Activity of Alpha-amylase Enzyme in Relation to Temperature and PH Introduction: The role of amylase in plants is the breakdown of starches so that they can be used as energy in the first stages of early growth (wise geek, [B] 2016). Enzymes are extremely efficient natural catalysts that are found in cells, they work by lowering the activation energy of a reaction and providing an alternative reaction pathway. Enzymes are very specific, only catalysing certain reactions…

be that a seed is unable to germinate due to a hard or thick seed coat. Some chemical dormancy factors may be internal chemical or metabolic conditions such as the presence of certain plant hormones like abscisic acid (inhibits germination) and gibberellin (ends seed dormancy) (Lee Stivers, n.d.). Some seed coats membranes can even form a barrier that may be permeable to water, but not oxygen (Lee Stivers, n.d.). This is detrimental for the seed as one of the factors are not being…

Daphnia magna and Daphnia pulex. I used six different concentrations: 0 mg/L (control), 1 mg/L, 5 mg/L, 25 mg/L, 125 mg/L, and 625 mg/L. Gibberellic acid (99% purity, Chemservice, West Chester, PA) was dissolved in deionized water as it ionized into gibberellin and H+ ions. Buffered and unbuffered gibberellic acid 5000 mg/L stock solutions were used for spiking exposure jars. The buffered stock solutions were buffered with sodium bicarbonate until the solution reached a neutral pH. Glass jars…

Peanut, (Arachis hypogaea L.) is an herbaceous annual plant of the family Fabaceae grown for its oil and edible nuts. Peanut plants are small, usually erect, thin stemmed with feather-like leaves. The leaves are arranged in alternate pairs with leaf-like attachments near the stalk. The peanut plant produces yellow, orange, cream or white flowers which produce 'pegs', characteristic floral structures which sink into the ground to grow the pod. The pods could be reaching up to 10 cm (4 in) in…

Determining the impact of Auxin in pea plants, and its effect on lateral bud growth Megan Posey Bio 121-104 John Barry 10/23/16 Abstract Auxin is a hormone that helps to regulate bud growth, cell elongation, and many other aspects of plants. Apical dominance is a phenomenon that occurs due to the presence of auxin and stops lateral bud growth. In this experiment, we tested the hypothesis that a group of pea plants without treatment of auxin would have the most lateral bud growth, the 500 ppm…

Role of Ethylene in Plants The development of the plants involves the progressive and recessive birth and death of their parts such as shoots, roots, leaves, flowers and buds. The tree shape could be examined by taking into account the numbers of parts that determine the longevity and final outcomes. The outcomes of buds are determined by their location on the tree. While many factors are involve in the regulation of this developmental pattern. Ethylene plays an important role in the…