Allium Test The Allium test provides a rapid screening procedure for chemicals, pollutants contaminants, etc. which may represent environmental hazards. Root growth inhibition and adverse effects upon chromosomes provide an indication of likely toxicity.
Clearing Arabidopsis Non-Ovule Materials With the HCG Solution Protocol Protocol can be used for clearing intact non-ovule materials of arabidopsis, which can then be observed under Normarski optics. This is an efficient way to analyse root, seedling even flower development without sectioning. This protocol could also be used for clearing GUS stained material, after chlorophyll is removed by 70% ethanol.
Cultivation of Arabidopsis Protocol In most natural habitats, Arabidopsis is a winter annual: Its seeds germinate in the fall, the young plants survive the winter, floral meristems emerge in the spring, and only the seeds survive the summer months. Most common laboratory varieties of Arabidopsis flower within 4 weeks of germination, and seeds can be collected after an additional 4-6 weeks.
Imaging of Fresh Arabidopsis Tissues in the Scanning Electron Microscope Protocol In recent years, the increased sensitivity of electron detectors and the availability of low-vacuum or variable-pressure systems have allowed imaging of fresh tissue samples without the need for fixation, drying, and coating. This obviously saves a lot of time, although the image quality may not be as good as that obtained from fixed samples. However, for most applications that tend to be at a relatively low magnification, the quality can be as good as that obtained from fixed samples.
Molecular and Biochemical Analysis of Arabidopsis Protocol The standard protocol for in situ hybridizations in plants still involves fixing fresh tissue, embedding the tissue in wax, sectioning with a microtome and detection of the transcripts of interest using labeled RNA-probes. This protocol concentrates only on nonradioactive methods, as they are easy to perform, very sensitive and even faster than techniques involving radioisotope labels.
Vegetative Propagation of Alfalfa by Stem Cuttings Alfalfa is an outcrossing species, cultivars consist of populations rather than individual homozygous or
inbred lines. After only two cycles of self-pollination, severe inbreeding depression eliminates selfed
individuals from populations. To obtain sufficient plant material of relative genetically uniformity (these
plants will still necessarily be heterozygous) for experimental purposes, it may be necessary to propagate a
single individual or clone.
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