First, plant a well-growing towel gourd seedling in a big flowerpot. Taking the stem of loofah as the center, insert thin bamboo poles, a plurality of bifurcated dry branches, plywood and an upward straightened rope at equal distances on the circumference with a radius of 10 cm. Then apply sufficient fertilizer and water to the towel gourd seedlings, put them on the sunny balcony, and observe and record the growth and vine climbing of the towel gourd every day.
A week later, the stem tip of the loofah slowly extended. After two weeks, the elongated stem tips gradually moved closer to the dead branches with many branches. After three weeks, the stem tip has been tightly wrapped around the forked dead branches. After more than a month, vines and leaves are close to the multi-branched dead branches and begin to grow along them.
At the same distance, the towel gourd chooses the multi-branched dead branches as the climbing objects. If the forked object is far away from it, and there are some other crawling objects nearby, which loofah will choose? Is it better to find a closer climbing object farther away, or to find a dead branch that is convenient for it to fix the vine? .
Insert two sticks with the same diameter and length at 5 cm and 8 cm away from the towel gourd seedlings, and insert many dead branches at 10 cm. A month later, the loofah vine wound around the stick at 5 cm and began to grow upward.
What will the loofah do if there are no climbing objects nearby? So I made a further observation on the characteristics of loofah's choice of climbing objects.
I will clean up all the objects near the flowerpot with loofah seedlings, so that there are no climbing objects within one meter around. Then provide sufficient water, nutrients and light for the towel gourd seedlings to ensure the normal growth of the towel gourd.
On the third day, the leaves on the stem tip of the loofah gradually opened and a delicate terminal bud grew. In the first week, vines stretch and leaves grow. The bud tip becomes longer. In the second week, the loofah seedlings continued to grow. In the third week, the vines began to droop and the buds touched the ground. In the fifth week, the loofah vine climbed to the wall one meter away and stretched out about 60 cm. Around the sixth week, the bud tip of loofah has been stuck on the wall. A few days later, the loofah vine fixed the vine on the wall and the leaves grew up against the wall.
What happens when there are obstacles above the vines during the growth of loofah seedlings?
I used a flowerpot to set up a loofah vine with a length of about 1 m on the multi-branched branches, so that the stem tip was about 5 cm away from the roof, forming a large growth obstacle surface, so as to prevent the loofah from continuing to grow upwards. On the third day after erection, the tip of the stem touched the roof, the front end of the loofah vine bent about 3 cm, and other parts grew normally. A week later, the tender part of the front end of the vine has formed a bend of about 20 cm. In the second week, the curved vines continued to grow downward, and the vines drooped for more than 40 cm and were placed on the top of the dead branches in the flowerpot, but no entangled filaments were formed. After a few days, the vines became thicker, but the downward growth rate slowed down and the stem tips turned yellow slightly. In the third week, the tip of the stem turned yellow and dried up completely, the growth of the stem basically stopped, and the leaves at the top dried up. The vines are still green. A month later, only a few leaves on the loofah vine dried up, and the rest of the plants did not change abnormally.