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DOI	10.17660/eJHS.2020/85.3.1
	A ploidy chimera reveals the effects of tetraploidy in date palm
	Othmani, A.1; Jemni, M.2; Leus, L.3; Sellemi, A.1; Artes, F.4; Werbrouck, S.5
通讯作者	Othmani, A.
来源期刊	EUROPEAN JOURNAL OF HORTICULTURAL SCIENCE
ISSN	1611-4426
EISSN	1611-4434
出版年	2020
卷号	85 期号:3 页码:137-144
英文摘要	In the oasis of Tozeur (Tunisia) a peculiar date palm ploidy chimera was discovered, showing a diploid (2n = 2x) and a tetraploid (2n =4x) sector and a uniform tetraploid offshoot. This chimera allowed to describe the effects of chromosome doubling on some selected features. Because both ploidies occur within one plant, there was no environmental bias. Tetraploid leaves are longer, bear larger leaflets and spines and have a thicker rachis than normal diploid leaves. During three seasons, tetraploid inflorescences appeared ten days later than their diploid counterparts. The tetraploid sector formed bunches with stalks bearing larger fruits, with a higher percentage of inedible parthenocarpic fruits, than bunches that arose from the diploid sector. Tetraploid fruits are significantly longer, wider and heavier than diploid fruits, with a larger pulp diameter, irrespective of whether they are seeded or parthenocarpic. Diploid parthenocarpic fruits are longer than seeded fruits, while tetraploid parthenocarpic and seeded fruits both show the same size. The occurrence of tetraploidy opens new perspectives in date palm breeding. Pollination of tetraploid pistils with pollen from diploid males gave rise to a relatively low number of triploid plantlets, suggesting a triploid block.
英文关键词	flow cytometry flowering parthenocarpy phenology Phoenix dactylifera polyploidy
类型	Article
语种	英语
国家	Tunisia ; Belgium ; Spain
开放获取类型	Green Published, Bronze
收录类别	SCI-E
WOS记录号	WOS:000543446600001
WOS关键词	PHOENIX-DACTYLIFERA L. ; POLYPLOIDY ; MORPHOLOGY ; EVOLUTION ; ORIGIN
WOS类目	Horticulture
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319516
作者单位	1.Ctr Reg Rech Agr Oasienne, Lab Culture In Vitro Palmier Dattier, Degache 2260, Tunisia; 2.Ctr Reg Rech Agr Oasienne, Lab Technol Dattes, Degache 2260, Tunisia; 3.Flanders Res Inst Agr Fisheries & Food ILVO, Plant Sci Unit, Caritasstr 39, B-9090 Melle, Belgium; 4.Tech Univ Cartagena, UPCT, Dept Food Engn, Postharvest & Refrigerat Grp, Paseo Alfonso XIII 48, Murcia 30203, Spain; 5.Univ Ghent, Fac Biosci Engn, Dept Plant & Crops, Valentin Vaerwyckweg 1, B-9000 Ghent, Belgium
推荐引用方式 GB/T 7714	Othmani, A.,Jemni, M.,Leus, L.,et al. A ploidy chimera reveals the effects of tetraploidy in date palm[J],2020,85(3):137-144.
APA	Othmani, A.,Jemni, M.,Leus, L.,Sellemi, A.,Artes, F.,&Werbrouck, S..(2020).A ploidy chimera reveals the effects of tetraploidy in date palm.EUROPEAN JOURNAL OF HORTICULTURAL SCIENCE,85(3),137-144.
MLA	Othmani, A.,et al."A ploidy chimera reveals the effects of tetraploidy in date palm".EUROPEAN JOURNAL OF HORTICULTURAL SCIENCE 85.3(2020):137-144.