干旱区生态环境知识资源中心(Arid): Morphological characterization of cactus pear (Opuntia ficus-indica) accessions from Agadir, Morocco

Arid

DOI	10.17660/ActaHortic.2019.1247.23
	Morphological characterization of cactus pear (Opuntia ficus-indica) accessions from Agadir, Morocco
	Nefzaoui, M.; Lira, M. A.; Boujghagh, M.; Udupa, S. M.; Louhaichi, M.
通讯作者	Nefzaoui, M (corresponding author), Univ Fed Rural Pernambuco, Recife, PE, Brazil. ; Nefzaoui, M (corresponding author), INRA Reg Ctr Agr Res Agadir, Agadir, Morocco.
会议名称	9th International Congress on Cactus Pear and Cochineal - CAM Crops for a Hotter and Drier World / General Meeting of the FAO-ICARDA International Cooperation Network on Cactus Pear and Cochineal (FAO-ICARDA CACTUSNET)
会议日期	MAR 26-30, 2017
会议地点	Coquimbo, CHILE
英文摘要	The North Africa region falls under an arid or semi-arid climate and is considered as a hot spot for climate change. To combat feed shortages, increase the income of the rural poor and mitigate the effect of climate change, around 1 million ha of cactus crop has been planted in Tunisia, Algeria, and Morocco. Aware of the importance of germplasm, ex-situ collections are being initiated in the region, where promising accessions have been introduced from many countries. The objective of this contribution was to assess the genetic diversity of 20 cactus pear accessions from the ex-situ collection located at the INRA Morocco research station in Agadir using morphological characterization based on FAO Cactusnet descriptors. The data were subjected to principal component analysis (PCA) and agglomerative hierarchical clustering (AHC) using the XLSTAT 2015 package. The results showed that the accessions can be discriminated by some of the morphological descriptors. Many of these morphological descriptors were significantly correlated, such as number of cladodes and number of fruits (r=0.73), number of cladodes and plant diameter (r=0.73), length of the cladode and plant height (r=0.7), and length of spines and number of areoles (r=0.67). Cladode shape and the number of spines and areoles are the recommended descriptors, since they were capable of discriminating accessions with suitable accuracy. Other descriptors do not seem to influence the morphological characterization, including cladode thickness, number of spines, plant height, and cladode shape index. Therefore, PCA and AHC are efficient tools for segregating accessions using a reduced number of morphological descriptors. Another important finding is that the number of morphological descriptors may be reduced without potential risk of reducing the accuracy of the phenotypic characterization for this particular collection and location.
英文关键词	cactus pear genetic diversity phenotypic characterization morphological descriptors multivariate analysis
来源出版物	PROCEEDINGS OF THE IX INTERNATIONAL CONGRESS ON CACTUS PEAR AND COCHINEAL: CAM CROPS FOR A HOTTER AND DRIER WORLD
ISSN	0567-7572
EISSN	2406-6168
出版年	2019
卷号	1247
页码	163-169
ISBN	978-94-62612-44-0
出版者	INT SOC HORTICULTURAL SCIENCE
类型	Proceedings Paper
语种	英语
收录类别	CPCI-S
WOS记录号	WOS:000719258700023
WOS关键词	GENETIC DIVERSITY
WOS类目	Agronomy ; Plant Sciences ; Horticulture
WOS研究方向	Agriculture ; Plant Sciences
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/370262
作者单位	[Nefzaoui, M.; Lira, M. A.] Univ Fed Rural Pernambuco, Recife, PE, Brazil; [Nefzaoui, M.; Boujghagh, M.] INRA Reg Ctr Agr Res Agadir, Agadir, Morocco; [Udupa, S. M.] Int Ctr Agr Res Dry Areas ICARDA, ICARDA INRA Cooperat Res Project, Rabat, Morocco; [Louhaichi, M.] Int Ctr Agr Res Dry Areas, Amman, Jordan
推荐引用方式 GB/T 7714	Nefzaoui, M.,Lira, M. A.,Boujghagh, M.,et al. Morphological characterization of cactus pear (Opuntia ficus-indica) accessions from Agadir, Morocco[C]:INT SOC HORTICULTURAL SCIENCE,2019:163-169.