Cryptic dioecy

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August undefined, 2024

WebCRYPTIC DIOECY IN NYSSA YUNNANENSIS (NYSSACEAE), A CRITICALLY ENDANGERED SPECIES FROM TROPICAL EASTERN ASIA1 Bao-Ling Sun,2,3 Chang-Qin Zhang,2 Porter P. Lowry II,4,5 and Jun Wen6 ABSTRACT Nyssa yunnanensis W. Q. Yin ex H. N. Qin & Phengklai (Nyssaceae) is a critically endangered range-restricted tree … WebJul 29, 2024 · Androdioecy is a rare reproductive system. Fraxinus platypoda, a woody canopy species in Japan’s mountainous riparian zones, is described as a morphologically androdioecious species. In this study, we tried to detect whether F. platypoda is also functionally androdioecious.

The Evolution of Sex Determination in Plants SpringerLink

Web• Conclusions In M. pubescens , cryptic dioecy has evolved from stigma-height dimorphism as a result of morph-specific sterility mutations. Key words: Dioecy, distyly, female and … WebDec 30, 2009 · 30 December 2009 Cryptic Dioecy in Nyssa Yunnanensis (Nyssaceae), A Critically Endangered Species from Tropical Eastern Asia Bao-Ling Sun , Chang-Qin … first republic bank bloomberg

Mussaenda campanulata (Rubiaceae), a new monomorphic …

WebOct 1, 1999 · All eight species show cryptic dioecy. Five species show strict dioecy and three species show leaky dioecy due to the presence of male trees that set fruit. Species … WebOct 1, 1999 · In this study, we quantified the presence and distribution of leaky dioecy in a group of congeneric endemic species of the genus Dombeya (Sterculiaceae) on La … WebBackground and aims: Evolutionary transitions from heterostyly to dioecy have been proposed in several angiosperm families, particularly in Rubiaceae. These … first republic bank bic

CRYPTIC DIOECY IN NYSSA YUNNANENSIS (NYSSACEAE), A …

Development and Evolution of Unisexual Flowers: A Review

WebSynonyms for CRYPTIC: mysterious, enigmatic, obscure, mystic, uncanny, ambiguous, inscrutable, enigmatical; Antonyms of CRYPTIC: intelligible, understandable, obvious ... WebSun B-L, Zhang Ch-Q, Lowry PP, Wen J (2009) Cryptic dioecy in Nyssa yunnanensis (Nyssaceae), a critically endangered species from tropical eastern Asia. Annals of the Missouri Botanical Garden 96, 672–684. Cryptic dioecy in Nyssa yunnanensis (Nyssaceae), a critically endangered species from tropical eastern Asia. first republic bank bellevue waWebCryptic Dioecy in Nyssa Yunnanensis (Nyssaceae), A Critically Endangered Species from Tropical Eastern Asia1. Annals of the Missouri Botanical Garden, 96(4), 672–684. doi:10.3417/2008015 . first republic bank bond rating

"WebJan 7, 2024 · Cryptic dioecy: Flowers appear morphologically bisexual; however, only one of the two sexes is functional . Dichogamy: Temporal difference in sexual organs maturation, thus promoting cross-pollination rather than self-pollination. Differences in the timing of pollen dispersal from anthers and stigma receptivity of flowers. " - Cryptic dioecy

Cryptic dioecy

Dioecy: The Dimorphic Sexual System and Pollination in

WebOct 31, 2024 · Cryptic dioecy (Mayer and Charlesworth 1991) characterized the population of G. brasiliensis in the Maricá restinga, due to the occurrence of male plants as well as plants with morphologically … WebMar 4, 2015 · The higher occurrence of dioecy in young successional areas is likely due to a higher relative seed fitness of dioecious species in more stressful conditions or by an evolutionary-driven association between dioecy and colonization ability, as predicted by theoretical studies. Synthesis.

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WebLes fleurs femelles de certaines espèces dioïques développent des étamines avec du pollen stérile, un système sexuel connu comme dioïsme cryptique. Le fait que les étamines des fleurs femelles attirent les pollinisateurs pour assurer la production de graines, serait une hypothèse convaincante pour expliquer ce phénomène. WebSeveral new cases of cryptic dioecy have recently been studied. They may give information about the minimal requirements for the evolution … In some dioecious plant …

WebSep 5, 2024 · Introduction. Androdioecy is a rare (<0.005%), but phylogenetically important, breeding system in angiosperm species [1, 2] that is characterized by populations containing both male and hermaphroditic individuals.Some morphological androdioecy has, however, been shown to be cryptic dioecy [3, 4] with a sex ratio of 1:1 as the hermaphrodites … WebOct 7, 2004 · Aranha Filho J, Fritsch P, Almeda F and Martins A (2008) Cryptic dioecy is widespread in South American species of Symplocos section Barberina (Symplocaceae), Plant Systematics and Evolution, 10.1007/s00606-008-0109-9, 277:1-2, (99-104), Online publication date: 1-Jan-2009.

WebApr 1, 2024 · Proto-X and proto-Y = nascent sex chromosomes. (b) An alternative model involves nucleo-cytoplasmic mutations, with gynodioecy being determined by a cytoplasmic-male-sterility factor (CMS) and a nuclear restorer of male fertility gene (Rf) system, in which case dioecy is determined by cryptic CMS, fixed in the population. If the Rf gene and a ... WebApr 30, 2024 · In Apocynaceae, there exists a report of cryptic dioecy for Rauvolfia sellowii Müll. Arg. Some individuals have flowers with empty anthers (pistillate), and some have …

WebThese cryptically dioecious systems have the potential to provide significant insights into the selective factors and constraints involved in the evolution to and from dioecy. Thalictrum macrostylum is a morphologically androdioecious species in which the apparently hermaphroditic morph is functionally female. Methodology .

WebWe show that dioecy is associated with increased genetic diversity and a higher selection efficacy both against deleterious and for beneficial mutations while controlling for differences in population size. ... and in the Carpathians. Several contact zones were identified. Silene nutans consists of a cryptic assemblage of genetically distinct ... first republic bank bankruptcyWebNov 26, 2008 · Abstract. Pollen morphology of ten Brazilian species within the South American clade (ca. 20 species) of Symplocos section Barberina (Symplocaceae) was … first republic bank btfpWebFeb 2, 2011 · Given the evident role of stamens in female flowers in A. polygama reproduction, we discuss why cryptic dioecy is a rare phenomenon.Key words: … first republic bank brentwoodWebJul 19, 2010 · Cryptic dioecy is widely reported in flowering plants. However, in most instances it is not associated with transitions from heterostyly to dioecy (Bawa, 1980; Haber and Bawa, 1984; Kevan and Lack, 1985; Kawakubo, 1990; Mayer and Charlesworth, 1991; Kato and Nagamasu, 1995; Renner and Ricklefs, 1995; Aranha et al., 2009). first republic bank bostonWebAug 1, 2016 · Cryptic dioecy appears morphologically androdioecious, but the male organs in the hermaphrodite are sterile (Anderson and Symon, 1989, Cane, 1993 and references therein). However, functional androdioecy characterized by the coexistence of hermaphrodites that have both male and female function, and males (with higher male … first republic bank bloomberg usaWebFor these cases, cryptic dioecy is explained by pollinator foraging behavior and not sexual allocation theory. Pollen as a nutritional reward to foraging bees is largely … first republic bank bankruptWebNov 1, 1999 · In this study, we quantified the presence and distribution of leaky dioecy in a group of congeneric endemic species of the genus Dombeya (Sterculiaceae) on La Réunion island (Indian Ocean). All... first republic bank boston ma