Ovary Position Diversity in Saxifragaceae: Clarifying the Homology of Epigyny

2002 ◽  
Vol 163 (2) ◽  
pp. 277-293 ◽  
Author(s):  
Douglas E. Soltis ◽  
Larry Hufford
Keyword(s):  
Ovary Position

Floral structure and development in Nartheciaceae (Dioscoreales), with special reference to ovary position and septal nectaries

2018 ◽  
Vol 131 (3) ◽  
pp. 411-428 ◽  
Author(s):  
Hiroshi Tobe ◽  
Yu-Ling Huang ◽  
Tomoki Kadokawa ◽  
Minoru N. Tamura
Keyword(s):  
Special Reference ◽  
Floral Structure ◽  
Ovary Position

THE EFFECT OF OVULE POSITION ON THE FREQUENCY OF HYBRID AND INBRED SEED IN FABA BEAN

1990 ◽  
Vol 70 (1) ◽  
pp. 79-82 ◽  
Author(s):  
G. DUC ◽  
G. G. ROWLAND
Keyword(s):  
Vicia Faba ◽  
Seed Production ◽  
Faba Bean ◽  
Plant Stress ◽  
Hybrid Seed ◽  
Hybrid Seed Production ◽  
Vicia Faba L ◽  
Hybrid Seeds ◽  
Ovary Position ◽  
Ovule Position

The effect of ovule and ovary position on the frequency of hybrid seed production of faba bean (Vicia faba L.) was measured at Dijon, France and Saskatoon, Canada. Even though there was far greater ovule fertilization frequency at Dijon (72%) than at Saskatoon (30%) the frequency of hybrid seed was significantly greater at Saskatoon (24%) than at Dijon (15%). Neither the position of the ovule within the ovary nor the position of the raceme on the stem had any effect on the production of hybrid seed. However, at both locations the highest position within a raceme produced a significantly greater proportion of hybrid seeds. It is proposed that under the effect of intra- or inter-plant stress, developing ovaries containing hybrid embryos may be selectively retained.Key words: Vicia faba, ovule fertilization, outcrossing, faba bean

scholarly journals The ontogenetic bases for variation in ovary position in Melastomataceae

2017 ◽  
Vol 104 (8) ◽  
pp. 1142-1156 ◽  
Author(s):  
João Paulo Basso-Alves ◽  
Renato Goldenberg ◽  
Simone Pádua Teixeira
Keyword(s):  
Ovary Position

scholarly journals Palinología de Agavaceae, una contribución biosistemática

2017 ◽  
pp. 25
Author(s):  
Lina Ojeda-Revah ◽  
Beatriz Ludlow-Wiechers
Keyword(s):  
Chromosome Number ◽  
Geographical Distribution ◽  
Pollen Morphology ◽  
Point Of View ◽  
Generic Level ◽  
The Family ◽  
Ovary Position

The pollen of 15 genera and 36 species of the family Agavaceae were studied, based on Hutchinson' s classification. Observations were made with LM and SEM. Different taxonomical classifications are reviewed considering pollen morphology, geographical distribution, chromosome number and ovary position. From palynological point of view, Dahlgren et al., last classification agrees with the results obtained. Pollen samples studied show two levels of morphological behaviour: at an interespecific level there is little or no variation and at a generic level the following patterns are observed: a) semitectate and mainly monosulcate: Agave, Beschorneria, Dasylirion, Furcraea, Hesperaloii, Manfreda and Polianthes sometimes disulcate (Agavaceae, Agavoideae); b) tectate-perforate and monosulcate: Yucca (Agavaceae, Yuccoideae) and Dracaena americana (Dracaenaceae); c) tectate perforate to microreticulate and monosulcate to disulcate: Beaucamea, Calibamis and Nolina (Nolinaceae); d) intectate verrugate and monosulcate: Hasta (Funkiaceae); e) semitectate to tectate perforate and trichotomosulcate: Phormium (Phormiaceae); f) fosulate and monosulcate: Cordyline (Asteliaceae) and Dracaenafragans (Dracaenaceae) and g) psilate and ulcerate: Sansevieria (Dracaenaceae).

scholarly journals Floral and Inflorescence Morphology and Ontogeny in Beta vulgaris, with Special Emphasis on the Ovary Position

2008 ◽  
Vol 102 (4) ◽  
pp. 643-651 ◽  
Author(s):  
Hilda Flores Olvera ◽  
Erik Smets ◽  
Alexander Vrijdaghs
Keyword(s):  
Beta Vulgaris ◽  
Inflorescence Morphology ◽  
Ovary Position
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