How much do you understand hormone of plant? Cause " sexual precosity " There is no clear statement

How much do you understand hormone of plant? Cause " sexual precosity " There is no clear statement
P>" expand " Water-melon, top spend with thorn " The contraceptive cucumber " , the banana accelerated the ripening, has become the focus that people pay close attention to. Though there is expert's explanation that does not have scientific evidence that prove at present " Expand pharmaceutical " Harmful to people, but many persons are afraid that will influence the health to even cause " sexual precosity "P>1P>Suspected " reverse side model " --" expand " Water-melonP>Hormone of plant is not known " Hang on " In the human bodyP>Jiangsu Province a lot of water-melon bomb report that split competitively while being ripe, make water-melon " expand pharmaceutical " Hormone of this plant enters everybody's visual field rapidly.P>Hormone of plant is divided into two kinds: One kind is hormone that itself contains in the body of plant, one is plant growth regulator of the artificial synthesis. Plant growth regulator delays growing and promoting two pieces of function of growth.P>The fruit changes from small to big, because the plant can produce a kind of hormone - -The cell division is plain, it can impel plant cells to split and yield positive results constantly. In order to make the fruit greater, more goodlooking, people, according to the principle with plain cell division, hormone of artificial synthesis - -Cell expand pharmaceutical. " expand pharmaceutical " Accelerate the cell division, promote cells to increase, improve the bearing fruit rate and promote the function that the fruit increases. Ministry of Agriculture website release the intersection of expert and interview say, " expand pharmaceutical " recently Used in a lot of countries and regions extensively, developed countries such as U.S.A., Japan,etc. also classify it as exemption material list not needed to carry on toxic management. Our country " Expand pharmaceutical " Include in the range of management of pesticide, qualified for 60 product Acquisition Registration at present, widely used in persimmon, muskmelon, bitter gourd, grape, tomato, water-melon, apple, pear, kiwi fruit,etc..P>According to the intersection of Chinese and the intersection of pesticide and the intersection of toxicity and hierarchical standard, " expand pharmaceutical " Principal ingredients chlorine pyrrole urea low-toxicity,there are getting more malicious a little on preparation. Under the common condition, pyrrole urea of chlorine is degraded very fast, gush out and construct after 24 hours to there are 60% that are degraded. Of our country the intersection of scientific worker and the intersection of supersession and dynamic research in water-melon show, chlorine the intersection of pyrrole and urea supersession very fast in water-melon, half-life is 1.2-1.67 days. Chlorine pyrrole urea aqueous solution of dosage of regulation for use sprays melon fetus once evenly in one day before or after the female flower opens on the same day, when the water-melon is reaped in 40 days, have not detected pyrrole urea of chlorine to remain in the sample after constructing medicines.P>Animal's experiment shows, raises mice with chlorine pyrrole urea of the radioactive mark, the absorption rate reaches 100%, 65%-85% exist in urine, internal tissue and expired air, 20% are secreted by the bile; Pyrrole urea of chlorine is discharged from the body quickly after being absorbed by the mouse, the accumulating does not exist.P>2P>Suspected " reverse side model " --Accelerate the ripening bananaP>Excessive will destroy the mouthfeel appearance to useP>Judge whether a chemical material is poisonous and exerting an influence on the health, must be linked to the dosage.P>" expand pharmaceutical " One, dosage and method that he uses medicine, improperly use or improve the dosage without authorization, will lead to the fact it make the shape strangely that the melon and fruit are too high because of some density, the mouthfeel will not be good. For example water-melon appear getting yellow in the meat or getting white hollow part, strawberry pulp hollow and kiwi fruit hard and sour, etc.P>The well done course, if let itself far from reaching the maturity state that we need ripely after there is one a lot of fruit vegetables. There is a kind of natural plant hormone ethylene in the fruit, can make the fruit vegetables ripe, the profit of ethylene can produce simple compound of ethylene. Many people thought by mistake the banana that the profit of ethylene accelerated the ripening was poisonous, will present vomiting, nausea and burn feeling.P>In fact toxicity of the profit of ethylene and sodium chloride (the principal ingredients of the salt) About equal, accelerate the ripening with the intersection of ethylene and profit banana internatioanlly agreed practice, dilute after the 400 accelerating the ripening the banana 40% the intersection of ethylene and favourable solution generally, will not influence health. In order to verify, the national banana industry technology system chief scientist Dr. Zhang XiYan announces the experiment of the banana of accelerating the ripening of the profit of ethylene on CCTV of May 19 in " the truth is investigated " - -Experiment personnel spray different 40% ethylene profit of density separately banana that pluck just (dilute 800, 400 times of, 200, 100 times of, 50 times separately, use 40% of the original liquid of ethylene profit directly) .P>The experimental result shows in 7 days: Common the intersection of dilution and time of 40% the intersection of ethylene and profits, accelerate the ripening result to be best, can accelerate the ripening the banana 4 days at the market, one is long that the banana keeps fresh. Other the intersection of ethylene and profit of density dilute liquid, can accelerate the ripening banana too, time is relatively long, and the density is too high not only can't make the banana ripe ahead of time, but also will damage bananas instead. Especially the banana accelerating the ripening with the original liquid of profit of ethylene, the epidermis is burnt and gradually rotten, no one will certainly buy on the market.P>Remain testing result of quantity, show to the intersection of ethylene and profit at the banana, exceed the national standard with the intersection of ethylene and the intersection of profit and banana residue that former liquid accelerates the ripening only, the banana that the liquid of market 400 times of common accelerated the ripening, it is 0.292 milligrams per kilogram that the profit of ethylene remains, residue amount in the pulp only each 0.01, well below national with a limit on quantity standard (each exceed 2) .
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