INHIBITOR OF FORMATION OF POLLEN OF NEEDLE-LEAF TREE SUCH AS TREE OF TAXODIACEAE OR CUPRESSACEAE

摘要

PURPOSE:To obtain an inhibitor of formation of pollen of needle-leaf tree, suppressing formation of flower bud of male flower, a reproductive organ of needle-leaf tree, preventing allergic pollen hypersensitivity before it happens, comprising maleic hydrazide or a salt thereof as an active ingredient. CONSTITUTION:An inhibitor of formation of pollen of needle-leaf tree which comprises maleic hydrazide(MH) or a salt thereof such as sodium salt, potassium salt, calcium salt, choline salt or alkanolamine salt as an active ingredient, is applied preferably in 400-4,000ppm concentration calculated as MH in a period of flower bud formation of male flower of needle-leaf tree such as tree belonging the family Taxodiaceae or Cupressaceae to stems and leaves of the tree, readily permeates into cells of male flower as a reproductive organ without damaging leaves at all, destroys initial cells right after flower bud differentiation in the male flower, exhibits the above-mentioned effects, suppresses consumption of energy regiured for formation of reproductive organ, promotes growth of tree and prevents aging and withering.