Mapping airborne pollen of papaya (Carica papaya L.) and its distribution related to land use using GIS and remote sensing

Journal article

Authors/Editors

ASAWIN MEECHAI

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Publication Details

Author list: Sritakae A., Praseartkul P., Cheunban W., Miphokasap P., Eiumnoh A., Burns P., Phironrit N., Phuangrat B., Kitsubun P., Meechai A.

Publication year: 2011

Volume number: 27

Issue number: 4

Start page: 291

End page: 300

Number of pages: 10

ISSN: 0393-5965

eISSN: 0393-5965

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84855252436&doi=10.1007%2fs10453-011-9197-z&partnerID=40&md5=57bea7b78a9ab3c7574fbfa92e53d98a

Languages: English-Great Britain (EN-GB)

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Abstract

Papaya is an economically important plant in Thailand for domestic consumption and export. However, papaya is extremely susceptible to disease caused by the papaya ring spot virus. Although transgenic papaya has been developed, commercial cultivation of transgenic plants in Thailand is still illegal. One concern is cross-pollination to conventional varieties. In this study, windborne-pollen dispersion of papaya (Carica papaya L.) was investigated using geographic information systems (GIS) and remotely sensed data. Pollen traps were placed around a papaya plot in eight geographic directions, with radiuses varying from 5 to 900 m from the plot. Pollen counts were made for 12 different dates, and data were input into a GIS database. The distribution of pollen and its relation to land use were analyzed using land use data obtained from Quickbird imagery acquired during 2007. Comparative analyses of pollen dispersal, wind direction, and speed were made using data collected from a micro-climatic station set up at a papaya plot. The furthest distance from the plot that pollen was found was at 0.9 km, a distance at which only 1 pollen grain was found. The number of pollen grains carried by wind decreased as distance increased. The direction of dispersal was not in accordance with wind direction data. Most pollen grains were found in agricultural areas and bare land. The total number of pollen grains found in exposed areas was considerably higher than the total found in areas sheltered by dense tree lines. ฉ 2011 Springer Science+Business Media B.V.

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