Evidence for spontaneous polyploidization in cassava Manihot esculenta Crantz

被引：0
作者：
Julie Sardos
Marguerite Rodier-Goud
Dominique Dambier
Roger Malapa
Jean-Louis Noyer
Vincent Lebot
机构：
[1] CIRAD,
[2] UPR Multiplication Végétative,undefined
[3] CIRAD,undefined
[4] UMR DAP 1098,undefined
[5] VARTC,undefined
[6] CIRAD,undefined
[7] UPR Multiplication Végétative,undefined
来源：
Plant Systematics and Evolution | 2009年 / 283卷
关键词：
Cassava; Triploidy; Flow cytometry; Chromosome counting; Evolution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Cassava, Manihot esculenta Crantz (Euphorbiaceae), is a major tropical crop. It is a diploid and sexually fertile, but confined to vegetative propagation in agriculture. While polyploidization is a major evolutionary process in higher plants and is of importance in the creation of improved crop varieties, spontaneous polyploidization is poorly documented for M. esculenta. Molecular and cytological evidence is provided here for two cases of intraspecific triploidization events that occurred in smallholders’ fields in Vanuatu, South Pacific. We then discuss the implications of triploidy for the crop and highlight the importance of this discovery for the evolution of this species in traditional cropping systems.
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页码：203 / 209
页数：6
相关论文
共 103 条
[11]  
D’Hont A(2000–2004)The unmanaged reproductive ecology of domesticated plants in traditional agroecosystems: an example involving cassava and a call for data J Agric Tradit Bot App 42 113-126
[12]  
Rao PS(2003)Unmanaged sexual reproduction and the dynamics of genetic diversity of a vegetatively propagated crop plant, cassava ( Theor Appl Genet 107 1083-1093
[13]  
Feldman P(1990) Crantz), in a traditional farming system Theor Appl Genet 79 433-439
[14]  
Grivet L(1993)Genetic diversity of traditional South American landraces of cassava ( Am J Bot 80 1494-1499
[15]  
Elias M(2004) Crantz): an analysis using microsatellites Biol J Linn Soc 82 537-546
[16]  
McKey D(2005)La biodiversité agricole en Amazonie brésilienne: ressource et patrimoine Exp Agr 41 474-489
[17]  
Elias M(2001)Simple sequence repeat marker diversity in cassava landraces: genetic diversity and differentiation in an asexualy propagated crop Theor Appl Genet 102 21-31
[18]  
Penet P(1982)Tetraploids, triploids, and 2n pollen from diploid inter-specific crosses with cassava Indian J Genet 42 405-411
[19]  
Vindry P(1992)Polyploidy and the evolution of domesticated plants Field Crops Res 13 173-182
[20]  
McKey D(2003)The role of triploid hybrids in the evolutionary dynamics of mixed-ploidy populations Gene Conserve 9 118-125
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