干旱区生态环境知识资源中心(Arid): Variations in Achene Traits, Germination, and Seedling Growth of Pluchea dioscoridis (L.) DC. as Affected by Maternal Climatic Aridity

Arid

DOI	10.21608/ejbo.2021.72086.1670
	Variations in Achene Traits, Germination, and Seedling Growth of Pluchea dioscoridis (L.) DC. as Affected by Maternal Climatic Aridity
	Shahda, Raghda H.; El-Bana, Magdy; El-Bous, Mona M.; Zaghloul, Mohamed S.
通讯作者	Shahda, RH (corresponding author)，Port Said Univ, Dept Bot, Fac Sci, Port Said, Egypt.
来源期刊	EGYPTIAN JOURNAL OF BOTANY
ISSN	0375-9237
EISSN	2357-0350
出版年	2022
卷号	62 期号:1
英文摘要	THE COLLECTION and germination of seeds for conspecific population distributed along climatic gradients can elucidate maternal environmental effects on achene traits, germination, and seedling establishment and fitness. The current study explored this approach for the natural populations of Pluchea dioscoridis (L.) DC. (Asteraceae), which grows over a wide range of climatic regions in Egypt (Mediterranean, semiarid, and arid). The arid region showed the smallest achene size and pappus length, whereas the achene size of the Mediterranean region was >36% and >27% larger than those of arid and semiarid regions, respectively. In general, seed viability decreased with aridity and ranged from 41.96% in semiarid to 9.32% in arid regions. Achenes from the three maternal climatic regions began germinating at approximately the same time, but the germination rates proceeded differently. The achene germination percentage ranged from 10% in arid regions to 33.54% in semiarid regions. The study showed a significant effect of maternal climatic aridity on achene traits, germination rate, and final germination percentage of P. dioscoridis. However, the survival rate in the three climatic regions became constant after 130 days of sowing. The results demonstrated how such widespread species acquire multiple maternal traits and mechanisms to optimize their adaptation, regeneration, and conservation of populations in stressful environments. However, further studies are required to demonstrate the phenotypic plasticity, reproductive efforts, and mechanism of dormancy loss of P. dioscoridis under different natural climatic conditions.
英文关键词	Achene traits Climatic gradient Dormancy Fitness Germination Seed viability
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000744477100008
WOS关键词	MOTHER PLANTS ; ENVIRONMENTAL GRADIENT ; FUNCTIONAL TRAITS ; DISPERSAL ; DORMANCY ; DESERT ; TEMPERATURE ; DIVERSITY ; ECOLOGY ; STRESS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377010
作者单位	[Shahda, Raghda H.; El-Bana, Magdy; El-Bous, Mona M.] Port Said Univ, Dept Bot, Fac Sci, Port Said, Egypt; [Zaghloul, Mohamed S.] Suez Canal Univ, Dept Bot, Fac Sci, Ismailia, Egypt
推荐引用方式 GB/T 7714	Shahda, Raghda H.,El-Bana, Magdy,El-Bous, Mona M.,et al. Variations in Achene Traits, Germination, and Seedling Growth of Pluchea dioscoridis (L.) DC. as Affected by Maternal Climatic Aridity[J],2022,62(1).
APA	Shahda, Raghda H.,El-Bana, Magdy,El-Bous, Mona M.,&Zaghloul, Mohamed S..(2022).Variations in Achene Traits, Germination, and Seedling Growth of Pluchea dioscoridis (L.) DC. as Affected by Maternal Climatic Aridity.EGYPTIAN JOURNAL OF BOTANY,62(1).
MLA	Shahda, Raghda H.,et al."Variations in Achene Traits, Germination, and Seedling Growth of Pluchea dioscoridis (L.) DC. as Affected by Maternal Climatic Aridity".EGYPTIAN JOURNAL OF BOTANY 62.1(2022).