| Chemical name: |
2,4a,7-Trihydroxy-1-methyl-8-methylenegibb-3-ene-1,10-dicarboxylic acid 1,4a-lacto
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| Other: |
Melting point: 233-235℃
Loss on drying: ≤1.0%
Reside on ignition: ≤0.1%
Toxicity: Both acute oral LD50 in rats and mice are greater than 15,000 mg/kg. No irritation to eyes and skin. Rats were inhaled for 2 hours per day in 400 ml/liter of air for 21 consecutive days without adverse reactions. Rats and dogs were fed an inactive dose of >1000 mg/kg feed for 90 days (6 days per week). LC50 of fish: squid (48 hours) >100ppm, leeches 850ppm.
Uses: Gibberellic acid GA3 is one of the most widely used plant growth regulators in agriculture, forestry and horticulture in China. The physiological effects of Gibberellic acid GA3 include: changing the proportion of female and male flowers in some crops, inducing parthenocarpy, accelerating fruit growth, promoting fruit set; breaking seed dormancy, early seed germination, accelerating stem elongation and bolting of some crops Enlarging the leaf area, accelerating the growth of young shoots, is conducive to the accumulation of metabolites in the phloem, activation of the formation layer; inhibition of maturation and senescence, control of lateral bud dormancy and tuber formation.
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