Regulation of growth of plants by means of chemicals. Auksiny

you are: Regulation of growth of plants by means of chemicals

Application synthetic auksinov in gardening is directly connected with a role natural IUK in a plant. Basically a-naftaliluksusnoj acids (NUK) use type connections because on the action they are similar with IUK, but are not split by enzymes of plants (fig. 14.23). In agriculture auksiny apply to the different purposes. Some of them are more low listed.

1. Stimulation of rooting of shanks. The shank basis before landing immerse in a powder containing NUK or indolilmasljanuju acid.

2. An induction of flowering of pineapple (actually it causes induced auksinom formation etilena). NUK operates usually as auksin.

3. Stimulation of infructescence and an induction of formation of seedless tomatoes. Both these of effect result induced auksinom from growth perikarpija in the absence of fertilisation.

4. prorezhivanie fruits at early stages of development.

5. Prevention of subsidence of fruits before their cleaning. These last two effects seem contradicting each other and opposite, but both of them are under the control auksina. Subsidence, for example, apples is accelerated or slowed down depending on entering and concentration time auksina. Acceleration of subsidence of fruits, possibly, occurs thanks to induced auksinom to formation etilena. prorezhivanie at early stages of infructescence it is necessary to prevent formation too a great number of small fruits whereas at later stages of development fruits should be kept on a tree up to their maturing.

6. Auksinopodobnye herbicides are considered in the following chapter.