Watermelon plants are prone to cyanosis, and if they grow, they will have more lateral branches, consume a lot of nutrients, affect the growth of watermelon, cause melons to fall, grow slowly, small size, late on the market, poor quality and other adverse consequences, so cultivate watermelon to use pruning, Pressure vines and other plant adjustment measures. Watermelon pruning methods mainly include single vine pruning, double vine pruning, and triple vine pruning. Single vine pruning is to leave only one main vine, the other side branches are removed; double vine pruning is a master and a pair, that is, in addition to leaving the main branch and leaving a strong side vine in the melon quail, the other side branches removed; triple vine pruning is a The main two deputies, that is, in addition to leaving the main vine and leaving two robust side vines at the base of the quail, the other side branches are removed. At present, more commonly used is double vine pruning and triple vine pruning, that is, double vines to leave a melon or three vines to stay 1-2 melons. Pressure vines can spread guava evenly in the field, make full use of light, but also play a role in wind. In addition, vine vines can also regulate the relationship between vegetative growth and reproductive growth, promote fruit growth, and at the same time allow adventitious roots to be produced at the melon vine stem nodes, increasing the absorption area. There are pressure and dark pressure methods for watermelon vines. The pressure is to use a piece of soil or branches to keep the vines fixed on the ground in a certain position, generally every 20-30 cm pressure; dark pressure generally first open a shallow ditch, the vine into the ditch, and then fill the soil compaction, pay attention Do not press the blade into the groove.
Watermelon generally leaves one melon per plant, and three vine prunes can leave two melons. The position of staying melons has a direct relationship with the growth of fruit and the time it is listed. The main female flower of the main vine is small, not round, thick, slow growing, and low in yield. If it stays late, it will be listed late, which will affect economic efficiency. The second and third female flower in the production stays on the melon. The early maturing variety generally leaves the second female flower, followed by the first and third female flowers; the middle and late mature varieties generally leave the third female flower, followed by the second and the second. Four female flowers.
PCR ( Polymerase Chain Reaction)
It provides a way to make more copies of a portion of DNA.
We need to have PCR ingredients that include DNA portion, Buffer solution, Primer+DNA (tap polymerase), and Nucleotides during the preparation step.
In the step of PCR sequence, there are three steps in this section.
Step 1 Denaturation
The addition of heat is needed to separate the two strands of the DNA molecule.
Step 2 Annealing
Temperature, is going to be cool in this step, should allow the primers to bind to the specific segments.
Step 3 DNA Synthesis
To make more copies of the DNA.
Those three steps above keep repeating to make enough copies of the DNA fragments. It is the principle of how PCR machine works.
Superyears General 2215 RT-qPCRadopts all-in-one with an industrial art design, combining the Analytical Instrument, Large touch screen, and Computer. General 2215 RT-qPCR is equipped with the proven thermal-cooled electric technology, which can recognize the speed rate of temperature control faster and obtain high-quality testing results within 40 minutes. To ensure the sensitivity and stability of the testing a design with traditional beam path with a susceptible CMOS image sensor is used. In addition, General 2215 supports multiple PCR analysis and High-resolution Melt Curve (HRM) analysis, compatible with the mainstream reagent kit in the market. It will be the best assistant and your preferred RT-qPCR.
Real-Time Pcr Instrument,Real-Time Ploymerase Chain Reaction Covid-19,Real Time Quantitative Pcr System,Pcr Tube Clinical Analytical Instruments
Nanjing Superyears Gene Technology Co., Ltd. , https://www.superyearsglobal.com