| comparative genetic study confirms exceptionally low genetic variation in the ancient and endangered relictual conifer, wollemia nobilis (araucariaceae). | the wollemi pine, wollemia nobilis (araucariaceae), was discovered in 1994 as the only extant member of the genus, previously known only from the fossil record. with fewer than 100 trees known from an inaccessible canyon in southeastern australia, it is one of the most endangered tree species in the world. we conducted a comparative population genetic survey at allozyme, amplified fragment length polymorphism (aflp) and simple sequence repeat (ssr) loci in w. nobilis, araucaria cunninghamii and ... | 2003 | 12919472 |
| axillary meristems and the development of epicormic buds in wollemi pine (wollemia nobilis). | intact trees of wollemia nobilis jones, hill and allen (araucariaceae) routinely develop multiple coppice shoots as well as orthotropic epicormic shoots that become replacement or additional leaders. as these are unusual architectural features for the araucariaceae, an investigation was made of the axillary meristems of the main stem and their role in the production of epicormic and possibly coppice shoots. leaf axils, excised from the apex to the base of 2-m-high w. nobilis plants (seedling ori ... | 2003 | 14612379 |
| the steam volatile oil of wollemia nobilis and its comparison with other members of the araucariaceae (agathis and araucaria). | the leaf essential oil of wollemia nobilis (wollemi pine) has been investigated and compared with other members of the family araucariaceae. all araucaroids examined yielded steam volatile oils in low yields. the oil from wollemia nobilis was composed mainly of (+)-16-kaurene (60%), together with alpha-pinene (9%) and germacrene-d (8%). oils from agathis species endemic to australia were high in monoterpenes, in contrast to those isolated from extra-australian species. the major constituents of ... | 2000 | 10793256 |
| drought avoidance and vulnerability in the australian araucariaceae. | the araucariaceae is an iconic tree family. once globally important, the araucariaceae declined dramatically over the cenozoic period. increasing aridity is thought to be responsible for extinction and range contraction of araucariaceae in australia, yet little is known about how these trees respond to water stress. we examined the response to water stress of the recently discovered tree wollemia nobilis jones, w.g., hill, k.d. & allen, j.m. (araucariaceae) and two closely related and widespread ... | 2016 | 26612850 |