The reproductive biology of okra. 1. Study of the breeding system in four Abelmoschus species

Euphytica ◽  
1991 ◽  
Vol 53 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Serge Hamon ◽  
Jean Koechlin
Keyword(s):  
Reproductive Biology ◽  
Breeding System

scholarly journals Reproductive biology and breeding system of Saraca asoca (Roxb.) De Wilde: a vulnerable medicinal plant

SpringerPlus ◽  
2016 ◽  
Vol 5 (1) ◽  
Author(s):  
G. R. Smitha ◽  
V. Thondaiman
Keyword(s):  
Medicinal Plant ◽  
Reproductive Biology ◽  
Breeding System ◽  
Saraca Asoca

Phenology, pollination, and breeding system of the threatened tree Caesalpinia echinata Lam. (Fabaceae), and a review of studies on the reproductive biology in the genus

Flora ◽  
2009 ◽  
Vol 204 (2) ◽  
pp. 111-130 ◽  
Author(s):  
Laís Angélica Borges ◽  
Mellissa Sousa Sobrinho ◽  
Ariadna Valentina Lopes
Keyword(s):  
Reproductive Biology ◽  
Breeding System ◽  
Caesalpinia Echinata

Senecio L. (Asteraceae) in Australia: Reproductive biology of a genus found primarily in unstable environments

1985 ◽  
Vol 33 (2) ◽  
pp. 197 ◽  
Author(s):  
M.E. Lawrence
Keyword(s):  
Exotic Species ◽  
Reproductive Biology ◽  
Seed Size ◽  
Breeding System ◽  
Seedling Establishment ◽  
Sexual Maturity ◽  
First Year ◽  
Perennial Species ◽  
Habitat Stability ◽  
Dispersal Potential

The reproductive biology of 28 native and four exotic species of Senecio is described in terms of their breeding system, longevity, habitat stability, seed size and number, dispersal potential and seedling establishment. Nineteen species (15 perennial, 2 annual, 2 ephemeral) are self-incompatible, 13 are self-compatible (4 perennial, 7 annual, 2 ephemeral) and nearly all occur in unstable environments. The success of the perennial species in unstable environments perhaps reflects the fact that they all reach sexual maturity within 1 year of germination and, provided populations of self-incompatible species are large enough, they can set seed in the first year.

scholarly journals Floral biology and breeding system of endangered species: Parmentiera cereifera Seem. (Bignoniaceae)

2021 ◽  
Vol 26 (2) ◽  
pp. 85-91
Author(s):  
Janis Damaiyani
Keyword(s):  
Endangered Species ◽  
Reproductive Biology ◽  
Breeding System ◽  
Pollen Viability ◽  
Floral Biology ◽  
Stigma Receptivity ◽  
Temporal Separation ◽  
Tetrazolium Chloride ◽  
Flower Biology ◽  
The Family

Parmentiera cereifera Seem. is an endangered species in the family Bignoniaceae. Related to the conservation effort, information about the reproductive biology of this species is very limited. Based on that, the objectives of this study were to provide knowledge about the reproductive properties such as floral biology and breeding system of P. cereifera. The research was conducted at Purwodadi Botanic Garden, from October 2019 to February 2021. Several important aspects of reproductive biology, including flower biology, pollen viability and stigma receptivity, pollen morphology and breeding system were investigated. The viability was tested with TTC (2, 3, 5–triphenly tetrazolium chloride) and stigma reseptivity was tested with hydrogen peroxide. The breeding system was determined based on outcrossing index (OCI) using Cruden's method. The results showed that P. cereifera flower was monoecious, had morphological character that supported nocturnal pollination. Stigma and anthers spatially separated, but there was no temporal separation of stigma receptivity and anther dehiscence. Based on the flower biology, the pollen ornamentation (reticulate type), and the Out-Crossing Index (OCI=4), the breeding system was outcrossing but partially self-compatible, required pollinators (zoophily)

scholarly journals Reproductive biology of leafy spurge (Euphorbia esula L.): breeding system analysis

1999 ◽  
Vol 77 (11) ◽  
pp. 1684-1688 ◽  
Author(s):  
Sarena M. Selbo ◽  
Jeffrey S. Carmichael
Keyword(s):  
Reproductive Biology ◽  
Breeding System ◽  
System Analysis ◽  
Leafy Spurge ◽  
Euphorbia Esula

Reproductive Biology of the Rare Orchid, Spiranthes diluvialis: Breeding System, Pollination, and Implications for Conservation*

1995 ◽  
Vol 9 (4) ◽  
pp. 929-938 ◽  
Author(s):  
Sedonia D. Sipes ◽  
Vincent J. Tepedino
Keyword(s):  
Reproductive Biology ◽  
Breeding System

Nectar secretion pattern, removal effects, and breeding system of Ligaria cuneifolia (Loranthaceae)

1996 ◽  
Vol 74 (12) ◽  
pp. 1996-2001 ◽  
Author(s):  
Guillermo L. Rivera ◽  
Leonardo Galetto ◽  
L. Bernardello
Keyword(s):  
Reproductive Biology ◽  
Breeding System ◽  
Nectar Production ◽  
Female Function ◽  
Flower Nectar ◽  
Flower Age ◽  
Female Phase ◽  
Male Phase ◽  
Pattern Removal ◽  
Flower Phenology

Some aspects of the reproductive biology of Ligaria cuneifolia have been studied, addressing the following questions: (i) Are there temporal differences in the female and male functions? (ii) How do nectar composition, volume, concentration, and amount of sugar vary throughout the flower lifetime? (iii) How does the plant respond to nectar removal? (iv) What is the breeding system of this species? Flowers last 4 days. There is a predominance of the male function in the first days and of the female function in the last days. Chemical composition of nectar varies throughout the flower lifetime; there is a constant decrease in sucrose along with an increase in glucose. Nectar is secreted during nights, and every secretion period is followed by a cessation interval. After the final cessation, a period of active resorption follows. During the mostly male phase of the flower, nectar has more sucrose than hexose, its secretion is discontinuous, and nectar removal reduces the rate of nectar production. During the mostly female phase, nectar has more hexose than sucrose, its secretion ceases, nectar removal does not affect nectar production, and a resorption period is inferred. Tests for spontaneous autogamy and apomixis were negative. Low fruit set is obtained when autogamous, geitonogamous, and xenogamous hand pollinations are performed on flowers less than 2 days old compared with flowers at least 3 days old (0, 15, and 47% versus 19, 37.5, and 89%, respectively). These results indicate the the reproductive system of L. cuneifolia is primarily xenogamous, but reproductive success is related to flower age. Keywords: Loranthaceae, Ligaria, nectar chemistry, breeding system, flower phenology, reproductive biology.

Seed Production, Pollinator Attractants and Breeding System in Relation to Fire Response — Are There Reproductive Syndromes among Co-occurring Proteaceous Shrubs?

1998 ◽  
Vol 46 (4) ◽  
pp. 377 ◽  
Author(s):  
Byron B. Lamont ◽  
Jens M. Olesen ◽  
Peter J. Briffa
Keyword(s):  
Seed Production ◽  
Reproductive Biology ◽  
Breeding System ◽  
Consistent Pattern ◽  
The Other ◽  
Severe Stress ◽  
Fire Response ◽  
Flower Production ◽  
Species Pairs ◽  
Flower Phenology

The reproductive biology of two species pairs was compared, one member of which (Dryandra sessilis (Knight) Domin, Hakea erinacea Meissner) is susceptible to severe stress and disturbance by fire (nonsprouter) and stores few seeds in its crown, while the other (D. lindleyana Meissner, H. cristata R.Br.) is resilient (resprouter) and also stores most of its seeds for some years. It was hypothesised that the nonsprouter would have a high annual seed production associated with a suite of attributes directed towards that end (forming a reproductive syndrome), and that the resprouter would have the reverse properties. Over 30 attributes were assessed, covering putative pollinators, pollinator attractants and rewards, flower phenology, breeding system, and flower, fruit and seed production. Dryandra sessilis produced far more seeds than D. lindleyana, due to prolific flower production and a high fruit : flower ratio (associated with an effective outcrossing breeding system). Hakea erinacea produced significantly more seeds than H. cristata, which was attributable to its smaller fruits and exceptionally high fruit : flower ratio (associated with highly effective selfing). The correlation of seed production and fruit : flower ratio with susceptibility to fire was not supported by any consistent pattern among the other reproductive attributes.

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