干旱区生态环境知识资源中心(Arid): Fruit heteromorphism and germination success in the perennial shrub tithonia diversifolia (Asteraceae)

Arid

DOI	10.1016/j.flora.2020.151686
	Fruit heteromorphism and germination success in the perennial shrub tithonia diversifolia (Asteraceae)
	Santos-Gally, Rocio; Munoz, Miriam; Franco, Giovana
通讯作者	Santos-Gally, R
来源期刊	FLORA
ISSN	0367-2530
EISSN	1618-0585
出版年	2020
卷号	271
英文摘要	Studies of fruit or seed heteromorphism (the presence of two or more fruit or seed morphs within an individual) provide valuable information about the influence of environmental variation on the evolution of reproductive strategies. Such heteromorphisms are more likely to be favoured by selection in annual species, because short-lived plants are in a disadvantaged position to gather information about environmental conditions their offspring are likely to face when they germinate, compared with perennial counterparts. Here, we describe fruit heteromorphism of Tithonia diversifolia, a perennial shrub found in habitats with contrasting environmental conditions. We tested whether fruit morphs differ in weight and germination success, and whether populations differed in fruit morph ratio. To do this, we first determined fruit morph ratio of three populations from contrasting ecosystems (evergreen high forest, evergreen medium forest and oak-pine forest), and compared germination success in a common-garden setting. In all populations, two fruit morphs were consistently distinguishable within the same capitulum. Although fruit morph ratios differed significantly across populations. Furthermore, fruit morphs differed in weight and germination success, but the direction of the difference was dependent on the population. These results suggest that fruit heteromorphism in the perennial T. diversifolia might represent distinct reproductive strategies allowing it to adapt to uncertain environmental conditions.
英文关键词	Achene weight Environmental conditions Evergreen forest Oak-pine forest Dormancy Morph ratio Fruit heteromorphism Perennial Priming
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000575854300005
WOS关键词	SEED HETEROMORPHISM ; HETEROSPERMA-PINNATUM ; SOMATIC POLYMORPHISM ; EVOLUTIONARY ECOLOGY ; ACHENE DIMORPHISM ; DESERT ANNUALS ; DISPERSAL ; CONSEQUENCES ; COMPOSITAE ; SIZE
WOS类目	Plant Sciences ; Ecology
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326660
作者单位	[Santos-Gally, Rocio] Univ Nacl Autonoma Mexico, CONACyT Inst Ecol, AP 70-275, Cdmx 04510, Mexico; [Munoz, Miriam; Franco, Giovana] Univ Nacl Autonoma Mexico, Inst Ecol, AP 70-275, Cdmx 04510, Mexico
推荐引用方式 GB/T 7714	Santos-Gally, Rocio,Munoz, Miriam,Franco, Giovana. Fruit heteromorphism and germination success in the perennial shrub tithonia diversifolia (Asteraceae)[J]. Universidad Nacional Autónoma de México,2020,271.
APA	Santos-Gally, Rocio,Munoz, Miriam,&Franco, Giovana.(2020).Fruit heteromorphism and germination success in the perennial shrub tithonia diversifolia (Asteraceae).FLORA,271.
MLA	Santos-Gally, Rocio,et al."Fruit heteromorphism and germination success in the perennial shrub tithonia diversifolia (Asteraceae)".FLORA 271(2020).