| abstract |
Provided are novel compounds which can germinate seeds of root-parasitic plants, more specifically, compounds represented by the general formula [wherein R, R, R, R and R may be the same or different and are each hydrogen, halogen, lower alkyl, or lower alkoxy, or alternatively R and R are united to form a lower alkylenedioxy group, or R and R together with the carbon atoms adjacent thereto respectively form a benzene ring, or R and R are united to form a lower alkylenedioxy group, or R and R together with the carbon atoms adjacent thereto respectively form a benzene ring; R is hydrogen or lower alkyl; X and Y may be the same or different and are each oxygen or sulfur; and n is an integer of 0, 1 or 2]. The novel compounds can control root-parasitic plants. |