The same is true of ash, willow, etc(32 cell seed trays wholesale). The seed coat is hard and becomes a mechanical binding force. The solution method is to cut the seed test pressure, endosperm (or cotyledon) fullness, color, odor, etc., and make a judgment according to the "seed solution method identification standard table". Most tree species are 0-5 ℃, very few tree species can reach 6 ~ 10 ℃(19cm plastic grow pots). The seeds of some tree species have a phenomenon of post-physiology.
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Practice has proved that through germination, the seeds can be germinated early and unearthed early to achieve the goal of one seedling, all seedlings, and strong seedlings(200 cell plug trays supplier). Secondary buds are one of the key measures for the success or failure of breeding. Can't make the embryo break the seed coat and extend outward, such as peach, plum, sperm, olive and other seeds belong to this situation(orchid plug trays). The inhibitory effect of the inhibitory substance on seed germination is neither specific nor absolute.
(best plastic plant pots for sale canada)Many studies have shown that many seeds contain certain substances that inhibit germination, and these substances are separated from the seed coat, endosperm and embryo(1 gallon nursery pots bulk). There are many types of inhibitory substances, of which the important ones are abscisic acid (ABA) and ethylene, There are many phenolic acids (caffeic acid, salicylic acid, etc.) and other phenolic compounds(hole tray). Although the external morphology is mature, they cannot germinate. Leaf trees, holly, etc.
Soften the seed coat and increase permeability; change the content of the seed and eliminate the controlled substances(2 gallon nursery pots bulk). Under certain conditions, it may be transformed into a stimulating effect, such as ethylene at a high concentration can inhibit seed germination, and at a low concentration can stimulate seed germination. The dormancy degree of seeds is related to the content of abscisic acid(20cm plastic grow pots). The higher the abscisic acid content, the deeper the dormancy degree of seeds.
Commonly used methods of germination include(3 gallon nursery pots bulk): mixing seeds with wet sand or placing them in layers under low temperature conditions, and the method of promoting seed germination is called low temperature stratification and germination. According to different situations, it is divided into two types(128 plug tray). First, the embryo differentiation of seeds is imperfect; second, the embryos of seeds have been differentiated and perfect, but not mature.(best plastic plant pots for sale canada)
The seed dormancy of some tree species is caused by the combined effect of the above reasons, such as Korean pine, Fraxinus mandshurica, etc(5 gallon nursery pots bulk). Dig in a place where she is high, well drained, and facing the sun. Germination is the treatment of breaking the seed body sleep by artificial methods and exposing the seed to the radicle(v11 nursery pots). This method is applicable to all tree species and is currently the best method for germination at home and abroad.
(best plastic plant pots for sale canada)The germination of seeds needs to be carried out under the conditions of straight temperature, humidity and oxygen, and the germination is to let the seeds germinate(200 cell seed trays wholesale). Therefore, the conditions for the germination of seeds should be created during the germination process. It is 60% of the saturated water content of the sand, that is, the hands are squeezed into a sand mass without dripping(succulent planter tray). Usually bamboo stalks or holes are used as vents.