Method for treating plants or plant parts

A method of inhibiting an ethylene response in plants or plant parts comprising the step of contacting said plants or plant parts with at least one composition comprising at least one double bond adducted cyclopropene compound,

• wherein said double bond adducted cyclopropene compound has the formula of
• wherein:
• a) each R1, R2, R3 and R4 is independently selected from the group consisting of H and a chemical group of the formula:
• -(L)n-Z
• wherein:
• i) n is an integer from 1 to 12;
• ii) each L is independently selected from the group consisting of D1, D2, E, and J, wherein:
• D1 is of the formula:
• D2 is of the formula:
• E is of the formula:
• J is of the formula:
• wherein:
• A) each X and Y is independently a chemical group of the formula:
• -(L)m-Z;
• and
• B) m is an integer from 0 to 8;
• and
• C) no more than two D2 or E groups are adjacent to each other and no J groups are adjacent to each other;
• iii) each Z is independently selected from the group consisting of hydrogen, halo, cyano, nitro, nitroso, azido, chlorate, bromate, iodate, isocyanato, isocyanido, isothiocyanato, pentafluorothio, and a chemical group G, wherein G is a 4 to 14 membered ring system;
• and
• iv) the total number of heteroatoms in -(L)n-Z is from 0 to 6;
• and
• b) the total number of non-hydrogen atoms in said compound is 50 or less, with the proviso that each said double bond adducted cyclopropene compound that has said structure 3 has R2 that is hydrogen.