干旱区生态环境知识资源中心(Arid): Pachycereus pringlei seedling emergence and establishment under different lighting conditions

Arid

DOI	10.1016/j.flora.2024.152563
	Pachycereus pringlei seedling emergence and establishment under different lighting conditions
	Seminario-Pena, Joselyn Vanessa; Nieto-Garibay, Alejandra; Terrazas, Teresa; Medel-Narvaez, Alfonso; Murillo-Amador, Bernardo; Troyo-Dieguez, Enrique
通讯作者	Nieto-Garibay, A
来源期刊	FLORA
ISSN	0367-2530
EISSN	1618-0585
出版年	2024
卷号	317
英文摘要	Cactus early life stages, especially in arid ecosystems, are typically the most vulnerable; seedlings face various abiotic and biotic filters to achieve survival and successful integration into their habitat. Thus, Pachycereus pringlei - endemic to Mexican Sonoran Desert - plays a crucial role in the arid areas of Baja California Sur, Mexico acting as a refuge and food source for wildlife. The present study evaluates P. pringlei emergence, survival, and seedling growth under different solar exposure (open and shaded areas) levels, both in greenhouse and natural conditions. The results indicated that natural conditions and moisture significantly influenced seedling emergence and survival. Lack of soil moisture led to compaction, which may have reduced porous spaces and restricted air and water circulation, thereby affecting root growth during the establishment phase. Conversely, the emerged seedling proportion under greenhouse shade was higher than in natural conditions. Additionally, these seedlings exhibited superior stem development, while those exposed to sunlight notably developed root systems. Low water potential was recorded, reaching down to -5.1 MPa for seedlings exposed to higher light levels. However, relative water content (RWC) values in tissues exceeded 70 %. No significant relationship was found between photosynthetic pigment concentration and different light conditions. Despite adapting cacti to xeric environments, the results suggest they may not be fully prepared to withstand prolonged drought episodes during the seedling stage. Nevertheless, some morphological traits, such as stem length, spines, and root area showed significant variations under different light conditions, facilitating photosynthesis light capture.
英文关键词	Columnar cactus Light exposure Morphology Physiology Recruitment Sonoran Desert
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001289607100001
WOS关键词	GIANT CARDON CACTUS ; COLUMNAR CACTUS ; NURSE PLANTS ; OSMOTIC ADJUSTMENT ; WATER-DEFICIT ; DESERT ; GROWTH ; GERMINATION ; SURVIVAL ; SOIL
WOS类目	Plant Sciences ; Ecology
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403742
推荐引用方式 GB/T 7714	Seminario-Pena, Joselyn Vanessa,Nieto-Garibay, Alejandra,Terrazas, Teresa,et al. Pachycereus pringlei seedling emergence and establishment under different lighting conditions[J],2024,317.
APA	Seminario-Pena, Joselyn Vanessa,Nieto-Garibay, Alejandra,Terrazas, Teresa,Medel-Narvaez, Alfonso,Murillo-Amador, Bernardo,&Troyo-Dieguez, Enrique.(2024).Pachycereus pringlei seedling emergence and establishment under different lighting conditions.FLORA,317.
MLA	Seminario-Pena, Joselyn Vanessa,et al."Pachycereus pringlei seedling emergence and establishment under different lighting conditions".FLORA 317(2024).