May 31, 2020
For educational institutions
Bio Lab TimeLine
⟶ Updated 4 Dec 2017 ⟶
List of edits
Sept. 1: The seeds for the Brassica rapa were planted. .
Sept. 15: The stems of the plants have developed color, but the color in the stems have not fully developed yet. The soil for most of the plants was pretty dry or a damp-dry. Due to the dry soil, all of the plants were wilted. The average height of the plants during this time was 4.3 cm. .
Sept. 22: Most of the soil in the hexs which the plants were planted in were dry. The plant in the second hex had a bent stem. In the fourth hex, the plant has developed a yellow spotted leaf. In the sixth hex, the plant had two dead/damaged leaves. All the plants have formed buds. The shortest plants were in the first and fourth hex. The tallest plants were in the third and sixth hex. .
Sept. 29: Some of the plants by this point had developed flowers, while others still retained their buds. More plants developed spotted leaves. The average height of the plants was 14.1 cm. At this point, the plants in hex six and two were determined to be white. While the plants in hex one, three, four, and five had purple stems. .
Oct. 6: The buds that remained on the plants were removed. By doing this the plants were tricked into focusing to produce fruit rather than flowers. The soil in the hexs contained more moisture than before when it was dry. Fruit stared to form as the plants were pollinated. All the plants had spotted leaves. All the plants were purple stemmed except the single plant in the second hex that had a green stem. .
Oct. 13: The plant in the second hex with the bent stem had its upper half completely dry and dead. All the hexs were well watered. All of the plants had spotted/bad leaves. A few leaves were ripped of during the process of removing buds that had sprouted. .
Oct. 20: All the plants remained with purple stem except for the plant in the second hex which had a green stem. The average height for the plants at this point was 16 cm. The number of bad leaves has increased on the plants. All of the hexs had wet soil. Most of the fruit were healthy but were not big enough or developed enough to carry any seeds. .
Nov. 3: The seeds that the section had grown and developed were germinated. The seeds were removed from the pods. The whole section's seeds were totaled. The seeds were placed on the germination tray.The seeds were separated and placed in trays with moisten paper towels using DI water. The sections total count of seed was 224. However, there were no seed that were produced from the plants mentioned to contribute to the section's seed count. .
Nov. 17: The seeds have now been germinated. The stems of the seeds were counted to determine the number of green stemmed to purple stemmed offsprings. Not all of the seed had germinated. Only 36% of the seeds had germinated. There were 54 purple stemmed offsprings to 26 green stemmed offsprings. With germination completed, it concludes the Brassica rapa genetic experiment. .
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