Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markers

Weedy rice is a serious problem in Uruguayan rice fields since intensification of rice production started about 10 years ago. The genetic diversity of 26 weedy accessions of weedy rice and 6 Uruguayan cultivars were analyzed using AFLP (amplified fragment length polymorphisms) methodology. Abundant...

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Autores principales:	Federici,María Teresa, Vaughan,Duncan, Norihiko,Tomooka, Kaga,Akita, Xin,Wang Wang, Koji,Doi, Francis,Marta, Zorrilla,Gonzalo, Saldain,Nestor
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2001
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582001000300008
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spelling	oai:scielo:S0717-345820010003000082003-08-18Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markersFederici,María TeresaVaughan,DuncanNorihiko,TomookaKaga,AkitaXin,Wang WangKoji,DoiFrancis,MartaZorrilla,GonzaloSaldain,Nestor Weedy rice is a serious problem in Uruguayan rice fields since intensification of rice production started about 10 years ago. The genetic diversity of 26 weedy accessions of weedy rice and 6 Uruguayan cultivars were analyzed using AFLP (amplified fragment length polymorphisms) methodology. Abundant polymorphisms were found among samples tested. Using different methods of analysis three groups of samples were revealed. A relationship was found between three groups and morphological traits. One group had a black hull, purple apex and long awn (wild type traits) while another group had straw hull and apex, and short or no awn (domestication traits). The third group included the cultivars analyzed and some weedy rice samples. The weedy rice in this third group is presumed to most closely mimic cultivated rice and may have recently evolved. The results suggest that weedy rice adapts either to the natural environment or to cultivation. The former type with black hull and long awn may be easy to control because it can easily be seen. The later group may be difficult to control, particularly since the weedy rices within the cluster consisting of cultivars suggest that weedy rices are continually evolving in Uruguayan rice fields. The AFLP technique is very effective for assessing genetic diversity within weedy rice and will be very useful for fingerprinting of local cultivars of rice.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.4 n.3 20012001-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582001000300008en
institution	Scielo Chile
collection	Scielo Chile
language	English
description	Weedy rice is a serious problem in Uruguayan rice fields since intensification of rice production started about 10 years ago. The genetic diversity of 26 weedy accessions of weedy rice and 6 Uruguayan cultivars were analyzed using AFLP (amplified fragment length polymorphisms) methodology. Abundant polymorphisms were found among samples tested. Using different methods of analysis three groups of samples were revealed. A relationship was found between three groups and morphological traits. One group had a black hull, purple apex and long awn (wild type traits) while another group had straw hull and apex, and short or no awn (domestication traits). The third group included the cultivars analyzed and some weedy rice samples. The weedy rice in this third group is presumed to most closely mimic cultivated rice and may have recently evolved. The results suggest that weedy rice adapts either to the natural environment or to cultivation. The former type with black hull and long awn may be easy to control because it can easily be seen. The later group may be difficult to control, particularly since the weedy rices within the cluster consisting of cultivars suggest that weedy rices are continually evolving in Uruguayan rice fields. The AFLP technique is very effective for assessing genetic diversity within weedy rice and will be very useful for fingerprinting of local cultivars of rice.
author	Federici,María Teresa Vaughan,Duncan Norihiko,Tomooka Kaga,Akita Xin,Wang Wang Koji,Doi Francis,Marta Zorrilla,Gonzalo Saldain,Nestor
spellingShingle	Federici,María Teresa Vaughan,Duncan Norihiko,Tomooka Kaga,Akita Xin,Wang Wang Koji,Doi Francis,Marta Zorrilla,Gonzalo Saldain,Nestor Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markers
author_facet	Federici,María Teresa Vaughan,Duncan Norihiko,Tomooka Kaga,Akita Xin,Wang Wang Koji,Doi Francis,Marta Zorrilla,Gonzalo Saldain,Nestor
author_sort	Federici,María Teresa
title	Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markers
title_short	Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markers
title_full	Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markers
title_fullStr	Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markers
title_full_unstemmed	Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markers
title_sort	analysis of uruguayan weedy rice genetic diversity using aflp molecular markers
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582001000300008
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Analysis of Uruguayan weedy rice genetic diversity using AFLP molecular markers

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