Petiveria Research Articles

Insecticidal activity of some Nigerian plants

Steam distillates of seven Nigerian plants, Lippia adoensis Hoschst, Azadirachta indica A. Juss, Monodora tenuifolia Benth, Piper guineense Schum & Thonn, Petiveria alliacea L., Citrus sinensis L. (variety Nigerian green orange), and Cymbopogon citratus L. were tested for acute toxicity on four major insect pests. The pests were larvae of Acrae eponina Cramer, adult cotton stainer Dysdercus superstitiosus (F.), the cowpea flea beetle, Ootheca mutabilis Sahlberg and the pod sucking bug Riptortus dentipes F. Essential oils of L. adoensis, M. tenuifolia and P. guineense were toxic to the insects. O. mutabilis was the most susceptible with LD50 of 0.15, 0.32 and 0.52 respectively for M. tenuifolia, L. adoensis and P. guineense, while R. dentipes was the least susceptible. There was cessation of feeding in A. eponina treated with essential oil of C. sinensis and P. alliacea.

Effects of a Severe Freeze on Native Woody Plants in the Lower Rio Grande Valley, Texas

The effects of a severe freeze in December, 1983 on the native plants of the lower Rio Grande Valley, Texas were determined for 75 species. Damage was initially assessed by examining leaves, apical meristems, and cambial tissues of stems. Initial assessments were confirmed by surveys in the spring when new leaves were present. Forty-three species were either undamaged or had only minor leaf damage. Twenty-two species with damaged leaves had intact apical meristems or showed evidence of damage for less than 10 cm below the apical meristem. Three species, Leucaena pulverulenta, Cordia boissieri, and Karwinskia humboldtiana, had more extensive damage, i.e., 10 cm - 40 cm below the apex, but showed evidence of recovery by the presence of undamaged cambial and phloem tissues below the apex. Eight species, Avicennia germinans, Capsicum annuum var. glabriusculum, Cereus pentagonus, Chiococca alba, Citharexylum berlandieri, Erythrina herbacea, Iresine palmeri (male plants), and Petiveria alliacea, were seriously damaged. Temperatures lower than those occurring in December, 1983, or similar temperatures for much longer periods of time, would be necessary to kill most of the native species in the lower Rio Grande Valley, Texas.

Comparative Experimental Study of Seed Dispersal on Animals

Studies of the plants Achyranthes aspera, Bidens sp. and Petiveria alliacea establish examples of seed attachment and detachment on dispersal surfaces that occur continuously during movement of a dispersal agent. In uniform one—species stands, dynamic saturation points for the dispersal surfaces were demonstrated. A parameter termed the retention rate (R) was determined for each species in various habitats, and was used to calculate mean distances of dispersal. Within and around established populations of Achyranthes, for example, the mean dispersal distance ranged from < 5 m to > 2.4km, showing that settlement is selective and depends on the structure of existing vegetation. This relationship is also affected by the vertical distribution of seeds on the disperser.

ChemInform Abstract: TRITHIOLANIACIN, A NOVEL TRITHIOLAN FROM PETIVERIA ALLIACEA

Chemischer InformationsdienstVolume 6, Issue 6 Natural Products ChemInform Abstract: TRITHIOLANIACIN, A NOVEL TRITHIOLAN FROM PETIVERIA ALLIACEA E. K. ADESOGAN, E. K. ADESOGANSearch for more papers by this author E. K. ADESOGAN, E. K. ADESOGANSearch for more papers by this author First published: February 11, 1975 https://doi.org/10.1002/chin.197506453Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume6, Issue6February 11, 1975 RelatedInformation

Trithiolaniacin, a novel trithiolan from Petiveria alliacea

Trithiolaniacin, a novel trithiolan characterized as cis-3,5-diphenyl-1,2,4-trithiolan was isolated along with sulphur, trans-stilbene, benzaldehyde, and benzoic acid from Petiveria alliacea.

Rosellinia bunodes . [Descriptions of Fungi and Bacteria

Abstract A description is provided for Rosellinia bunodes . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On arrowroot, Artocarpus integer , avocado, banana, cacao, camphor, cassava, Centrosemapubescens, Cinchona, Citrus , coffee, Colocasia antiquorum, Crotalaria, Desmodium gyroides, Dryobalanops aromatica, Erythrina , ginger, Gliricidia, Grevillea robusta, Hibiscus rosa-sinensis, Holigarna longifolia, Indigofera, Inga laurina, Leucaena glauca, Litsea , pepper (black), Petiveria alliacea, Phyllanthus , rattan, rubber, Schleichera trijuga , tea, Tephrosia and yams. DISEASE: Black root rot, mainly of tropical and subtropical woody hosts; plurivorous but described mostly from cacao ( Theobroma cacao ), quinine ( Cinchona spp.), coffee ( Coffea spp.), rubber ( Hevea brasiliensis ) and tea ( Camellia sinensis ). Wilt and death of the whole plant or single branches may be the first signs of attack. At the collar the mycelial sheet is at first cream-white shading to purplish-black and may extend well above the soil surface in damp conditions. On the root surface the firm, black, branching strands are firmly applied and thicken into irregular knots. In the cortex the strands have a black periphery and white core; in the wood they appear thread-like and black or sometimes as dots in transverse section. In culture the mycelium is white, later buff with black strands. GEOGRAPHICAL DISTRIBUTION: Widespread in tropical America and also in Central African Republic, India (Nilgris, Maharashtra). Indonesia (Java, Sumatra), Malaysia (W.), Philippines. Sri Lanka (Ceylon) and Zaire Republic (CMI Map 358, ed. 2, 1970). Additional records not yet mapped are Honduras, Panama. TRANSMISSION: As mycelium from surface oreanic litter and woody debris.