938 research outputs found
Controlled pollination methods for Melaleuca alternifolia (Maiden & Betche) Cheel
No full textCrop Production/Industries,
Ralph Linton in Madagascar (1926-1927).
No full textBased on archival records and other writing of the period, the author traces in detail the Ralph Linton Expedition to the Island of Madagascar, 1926-1927.
Liliana Mosca also comments on the nature and extent of the American Anthropologists collecting for the Field Museum of Natural History and his encounters while touring the different regions of Madagascar in various locales that would help unravel the web that bedeviled students of Malagasy culture
Object agreement marking and information structure along the Quechua-Spanish contact continuum
No full textDirect object clitics in Spanish are morphological markers at the interfaces of syntax, phonology, morphology, and information structure (Zwicky 1985; Ordóñez & Repetti 2006; Belloro 2007; Spencer & Luís 2012). In bilingual acquisition they are subject to variability (McCarthy 2008). In this paper we explore the morphology-syntax-information structure mapping of direct object clitics in clitic structures in a range of speakers that includes Quechua-dominant bilinguals and Spanish monolingual individuals along a continuum of language contact situations. Our findings indicate clear dissociation between syntactic properties and marking of morphological features. They also indicate a Progression from default gender marking in clitics to a scalar system of clitic forms based on animacy and informational value along the continuum of speakers. The findings of this exploratory study support the view that while clitics exhibit common syntactic properties across a continuum of speakers, they vary in morphological marking and informational value.Peer reviewed
Feature variability in the bilingual-monolingual continuum: Clitics in Bilingual Quechua-Spanish, Bilingual Shipibo-Spanish and in Monolingual Limeño Spanish contact varieties
No full textDirect object clitics in Latin American Spanish are subject to great variability infeatures across dialects (Camacho and Sánchez 2002; Harris 1995; Heap 2002; Zagona 2002). Variability also characterizes bilingual acquisition (McCarthy 2008) and especially clitic doubling structures in language contact contexts (Luján 1987; Mayer and Sánchez 2016; Sánchez 2003). We focus on the distribution of clitics and DOM in clitic doubling structures among Shipibo-Spanish bilinguals, Quechua-Spanish bilinguals, and monolingual speakers of Spanish in contact with Quechua. We analyze a continuum of clitic forms and DOM as complex cases of feature reassembly (Lardiere 1998, 2005) and functional convergence (Sánchez 2004) that results in new interface rules (Jackendoff 2011) with scalar hierarchies.Peer reviewe
Flowering Intensity and Flower Visitors of Santalum Album L. at Ex-situ Conservation Plot, Watusipat, Gunung Kidul, YOGYAKARTA
No full textFlowering intensity, insects visiting flowers and pollinators of S. album were determined in a study conducted in an ex-situ conservation plot, Watusipat, Gunung Kidul, Yogyakarta. Observations were undertaken during flowering season in 2009 and 2010, with an objective to determine the patterns of flowering and flower visiting insects of S. album in this population. In this study site, S. album typically flowers twice a year and reaches a peak on June and November. Flowers are visited by various insects, major in honey bees and ants. Santalum album is predominantly cross pollinated by insects however, low number of fruit set found in an open pollination. Variation of flowering intensity and the degree of self-incompatibility may influence the low number of fruit production in this species
POLLEN TUBES GROWTH FOLLOWING SELF- AND CROSSPOLLINATION IN Melaleuca alternifolia (Maiden & Betche) Cheel
No full textPollen tubes growth following controlled self-and croos-polination of several individual of tress of melaleuca alternifolia was observed under fluorescence microscope. Two experiment during 2004 and 2005 flowering season were carried out at M. alternifolia seed orchard at West Wyalong , New South Wales (Australia). Pollen tubes number was investigated at 4 , 7 , 9 and 14 days after pollination by fluorescence microscope. Ovule peneration by pollen tubes was investigated 14 days after pollination. They varied greatly between self-and cross-pollen tubes in the style, with less pollen tube found in the self-pollinated styles than cross-pollinated styles. The mean number of pollen tubes declined significantly as interval to harvesting of the style increased, from a maximum at the days 4 after pollination. The availability of self-pollen tubes grow in the style of M.alternifolia shows that mechanism of self-incompatibility occurs in this species. The reduction of number of pollen tubes in the lower parts of style shows that the self-incompatibility systems operate in the stigma or the style. The rejection of self-pollen tubes at the ovarian level and the consequent low levels or intolerance of selfing maintains a high level of outcrossing in M.alternifolia
STIGMA RECEPTIVITY AND POLLEN VIABILITY OF Melaleuca alternifolia
No full textStigma receptivity based on seed set and pollen tubes growth following controlled pollination of flowers of different ages was examined in Melaleuca alternifolia. The stigma secretion during 10 days after anthesis and pollen viability under three different temperatures and five storage times were also observed. These series of research were undertaken because successful controlled pollination of M. alternifolia depends on the application of viable pollen to the receptive compatible stigma. The objective of this research was therefore to determine the stigma receptivity and pollen viability of M. alternifolia. Results showed that the stigma receptivity began to develop on day one and finished on day seven after anthesis, peak receptivity occurred from day three to day six. The stigma receptivity also coincides with the appearance of secretion in the stigma, occurring from day three to day seven after anthesis. Therefore, the time for pollination of M. alternifolia appeared to extend for approximately 7 days after anthesis. Data for M. alternifolia showed that regardless of storage temperature, pollen was still viable after 26 weeks of storage; results also demonstrated that the lowest temperature (-18oC) was the best regime for long term storage
SERANGGA PENGUNJUNG PADA KEBUN BENIH GENERASI KEDUA Melaleuca alternifolia (Maiden &Betchc) Cheel Di WEST WYALONG NEW SOUTH WALES AUSTRALIA
No full textMORFOLOGI PEMBUNGAAN DAN SISTEM REPRODUKSI MERBAU (Intsia bijuga) PADA PLOT POPULASI PERBANYAKAN DI PALIYAN, GUNUNGKIDUL
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