Showing papers on "Lygodium published in 2009"

Laboratory host range testing of Neomusotima conspurcatalis (Lepidoptera: Crambidae) - a potential biological control agent of the invasive weed, Old World climbing fern, Lygodium microphyllum (Lygodiaceae).

Abstract: Old World climbing fern, Lygodium microphyllum, is a serious invasive weed in south Florida. Development of biological control is vital for sustainable management of L. microphyllum. Neomusotima conspurcatalis was discovered in Hong Kong in 1997 and was subsequently found causing feeding damage on L. microphyllum in much of its native range in Asia. Quarantine testing of N. conspurcatalis used 37 non-Lygodium fern species representative of New World genera of cultivated ferns and fern allies, one gymnosperm, three crop species, six Lygodium species, and the primary host L. microphyllum. No significant oviposition or feeding was observed on any of the 41 non-Lygodium species evaluated. Oviposition and feeding occurred on all Lygodium species, but amounts were low and usually significantly less than observed on L. microphyllum. The exception was L. japonicum, which was preferred as an oviposition host. Neomusotima conspurcatalis was only able to complete development on L. japonicum and L. palmatum,...

The Prothallia Of Aneimia And Lygodium

Abstract: SPORE COATS The spores of Aneimia and of Lygodium have three distinct coats. The exine is formed first, and as it broadens its composition changes from cellulose, so that with safranin it stains red, and then red and yellow. The change may be from cellulose to suberin, which stains red, and then to suberin and pectin, as pectin stains yellow. The exine of Aneimia hirsuta has ridges on the outer surface. The intine is the second coat formed, and is the one which covers the filament when it emerges from the spore. It remains a delicate cellulose wall. The epispore is the last to form, and in both Aneimia and Lygodium is produced by the activity of the tapetal protoplasm. In Lygodium granules appear in the protoplasm, increase in size, and adhere to the exine. In Aneimia hirsuta spines are formed on the ridges of the exine. The protoplasm forms a thin sheet over these projections and over the intervening surface of the exine. DEVELOPMENT OF THE THALLUS The first wall of the spore does not separate the rhizoi...

Schizaeales no Parque Estadual do Itacolomi, Minas Gerais, Brasil.

Abstract: This work presents the taxonomic study of Schizaeales from Itacolomi State Park, located in Ouro Preto and Mariana Municipalities, Minas Gerais State, Brazil. The vegetation of the Park is mostly formed by campos rupestres and semideciduous forests. The Schizaeales is found primarily in tropics and southern temperate zones, consisting of three families: Schizaeaceae, Anemiaceae and Lygodiaceae. Fourteen taxons were found: Anemia (11 species, including three varieties), Lygodium (one species), Schizaea (one species). Six taxons were recognized as endemics to Brazil. Identification keys, descriptions, illustrations and comments are presented.

Studies on the quality standard of lygodium japonicum

Abstract: Objective To establish method for determination of Quercetin dihydrate and Kaempferol in Lygodium japonicum by HPLC and Microscopic identification in order to set up the standard of Lygodium japonicum.Methods To find the most common characteristics of sexual cells of Lygodium japonicum by Microscopic identification,and establish the determination of Quercetin dihydrate and Kaempferol in Lygodium japonicum by HPLC.Results The method of Microscopic identification was characteristic,and method of determination was accurate and simple.The standard curves were linear within the range of 3.1212~249.7μg for Quercetin dihydrate and the range of 3.0328~194.1μg for Kaempferol respectively.The average recovery of Quercetin dihydrate was 98.31% and the one of Kaempferol was 98.42%.Conclusion The accurate and simple methods,can be used for the quality of Lygodium japonicum.