Heritability of floral traits for the perennial wild flower Penstemon centranthifolius (Scrophulariaceae): clones and crosses

Mitchell, Randall J.; Shaw, Ruth G.

doi:10.1038/hdy.1993.123

Cited by 102 publications

(85 citation statements)

References 35 publications

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“…Relatively little is known about the heritability of nectar production in wild plants. Substantial heritabilities of nectar production under controlled conditions, ranging from 0.38 to 0.64, were determined in Penstemon centranthifolius (Mitchell and Shaw, 1993), Epilobium canum (Boose, 1997) and Echium vulgare (Klinkhamer and van der Veen-van Wijk, 1999). Under field conditions Campbell (1996) did not detect any genetic variation of nectar production in Ipomopsis aggregata.…”

Section: Introductionmentioning

confidence: 94%

Heritability of nectar production in Echium vulgare

2004

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Heritabilities of nectar production in the wild species Echium vulgare were estimated as realised heritability under controlled and field conditions. The nectar production of offspring from high-and low-nectar-producing parents was significantly different in both controlled and field conditions, indicating that nectar production is in part genetically determined. The present study is the first one to report a genetic component of variation of nectar production in a wild plant species in the field. Heritability estimated under controlled conditions was 0.13 and therewith less than the heritability estimated under field conditions, which amounted to 0.26. Offspring of highnectar-producing plants produced comparable amounts of nectar in the growth chamber (1.28 ml) and in the field (1.22 ml). In contrast, the nectar production of offspring of lownectar-producing plants was significantly higher in the growth chamber (0.95 ml) than in the field (0.55 ml), indicating a genotype by environment interaction. The level of heritability of nectar production was dependent on the environment. Under less favourable conditions, like those in the field, heritability of nectar production increased. Nectar production was not correlated with any of the vegetative or reproductive traits measured, and hence no costs of nectar production could be detected. Results obtained stress the importance of field measurements in determining heritabilities.

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Section: Introductionmentioning

confidence: 94%

Heritability of nectar production in Echium vulgare

2004

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“…En estudios de transiciones a la polinización por colibríes en otros géneros de plantas donde éstas también han ocurrido, se ha reportado que el color, la morfología y las características del néctar tienen una base genética relativamente simple, de modo que con pocos cambios es posible el paso de un fenotipo al otro (BRADSHAW et al, 1998;BRADSHAW & SCHEMSKE, 2003). En poblaciones naturales de Penstemon, como en P. strictus en las montañas rocosas de Colorado y en muchas otras, existe variación natural en la morfología de las fl ores, la tonalidad de la corola y la producción de néctar (MITCHELL & SHAW, 1993). Los ingredientes básicos para que ocurra selección natural están presentes.…”

Section: Un Modelo Para Explicar Las Transicionesunclassified

Cambios de polinizador en tiempo evolutivo en plantas de Penstemon Schmidel (Scrophulariaceae)

Castellanos¹

2007

cdbio

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“…However in our study, we estimated broad sense heritabilities which represent a summary evaluation of the total level of genetic variation. It could be biased upwards by a non-additive genetic variation [15,16], and is considered to represent the upper limits for narrowsense heritability [8,24].…”

Section: Discussionmentioning

confidence: 99%

A quantitative study of some agronomic characters in Sulla (Hedysarum coronarium L.)

Namouchi¹,

Louati²,

Chriki³

2000

Agronomie

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-Eleven populations of Hedysarum coronarium L. collected from North Africa and Southern Italy were analyzed using both univariate and multivariate analyses on a data set for 25 quantitative traits. Broad sense heritabilities were estimated and ranged from 0.072 to 0.703. Seven principal components were found to explain 81.5% of the total variation. On the basis of these 7 principal components, populations were clustered at a similarity level estimated by euclidian distances. Three clusters were identified. Genetic divergence between these clusters was quantitatively measured by using Mahalanobis D 2 distances.cluster analysis / Hedysarum coronarium / heritability / morphological variability / multivariate analysis Résumé -Étude quantitative de quelques caractères agronomiques chez le Sulla (Hedysarum coronarium L.). Vingt cinq caractères morphologiques ont été mesurés chez 11 populations de Hedysarum coronarium collectées de l'Afrique du Nord et de l'Italie du Sud. Les données obtenues ont été soumises à une analyse univariée et une analyse multivariée. L'héritabilité au sens large a été estimée ; elle varie entre 0,072 et 0,703. L'ACP révèle que 7 composantes principales absorbent 81.5 % de la variance totale. L'application de la méthode de classification hiérarchique sur la matrice des distances euclidiennes a permis de répartir les populations en 3 groupes. L'utilisation de la distance de Mahalanobis D 2 a permis d'estimer la divergence génétique entre ces groupes.

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Heritability of floral traits for the perennial wild flower Penstemon centranthifolius (Scrophulariaceae): clones and crosses

Cited by 102 publications

References 35 publications

Heritability of nectar production in Echium vulgare

Heritability of nectar production in Echium vulgare

Cambios de polinizador en tiempo evolutivo en plantas de Penstemon Schmidel (Scrophulariaceae)

A quantitative study of some agronomic characters in Sulla (Hedysarum coronarium L.)

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