Kinetin and naphthaleneacetic acid were applied separately and in combination to excised leaf disks, localized areas of laminae, and petioles of detached leaves of broccoli (Brassica oleracea L., var. italica) and Xanthium (Xanthium pensylvanicum Wallr.). Senscence (measured as loss of chlorophyll) was strongly retarded by kinetin, but very slightly influenced by naphthaleneacetic acid. When th...

Interrelation between the CN-sensitive cytochrome path and the CN-resistant, benzohydroxamic acid (BHM)-sensitive, or n-propylgallate (nPG)-sensitive alternative path in seed respiration during germination was examined using the nondormant upper and lower seeds of Xanthium pensylvanicum Wallr. The operation of both paths was required not only for normal germination of the lower seed but also fo...

Verticillium dahliae was isolated from Noogoora burr (Xanthium occidentale) seeds collected mature asymptomatic plants in 2017 growing along the riverbank at Condobolin, NSW. V. by transferring surfaced-disinfested seed components onto 25% Potato Dextrose Agar (PDA) plus Novobiocin. Morphological and molecular analysis, as well fulfilment of Koch’s postulates, confirmed causal pathogen dahliae....