Can viable pollen carry Scots pine genes over long distances?

Lindgren, D.; Paule, Ladislav; Shen, Xihuan; Yazdani, Reza; Segerström, Ulf; Wallin, Jan‐Erik; Lejdebro, Marja Leena

doi:10.1080/00173139509429035

Cited by 90 publications

(63 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A common explanation of this fact is that a reduction in canopy density can enhance within-stand air movements (Okubo and Levin, 1989) and pollen being carried over larger distances (Di-Giovanni and Kevan, 1991;Lindgren et al, 1995). However, the pollen dispersal distances obtained in our study for Talayuelas (d ¼ 174.4 m and 1068 trees per hectare) and Landete (d ¼ 78.4 m and 810 trees per hectare) were not consistent with this hypothesis.…”

Section: Discussioncontrasting

confidence: 56%

Mating system and pollen gene flow in Mediterranean maritime pine

et al. 2008

View full text Add to dashboard Cite

Mating systems define the mode of gene transmission across generations, helping to determine the amount and distribution of genetic variation within and among populations of plant species. A hierarchical analysis of Mediterranean maritime pine mating system (61 mother trees from 24 plots, clustered in three populations) was used to identify factors affecting mating patterns and to fit pollen dispersal kernels. Levels of ovule and seed abortion, multi-and single-locus outcrossing rates and correlated paternity were estimated from progeny arrays and correlated with ecological stand variables and biometric tree measures. Pollen dispersal kernels were fitted using TwoGener and KinDist indirect methods and simulations were carried out to identify relevant factors affecting correlated paternity. Maritime pine showed high outcrossing rates (t m and t s B0.96) and relatively low levels of correlated paternity [an r p of 0.018 (Ritland's estimate) or 0.048 (Hardy's estimate)], although higher than in other anemophilous tree species. Mating system parameters had high variation at the single-tree level (99-100%) but no stand or population effect was detected. At the single-tree level, outcrossing rates were correlated with tree (diameter and height) and crown size. In addition, correlated paternity showed a significant negative correlation with tree height, height to crown base and height to the largest crown width, probably reflecting the importance of the trees' 'ecological neighborhoods'. Indirectly estimated pollen dispersal kernels were very leptokurtic (exponential-power distributions with b50.5), with mean dispersal distances from 78.4 to 174.4 m. Fitted dispersal kernels will be useful in building explicit simulation models that include dispersal functions, and which will contribute to current conservation and management programs for maritime pine. Nevertheless, the numerical simulations showed that restricted dispersal, male fertility and phenological overlap could only partially explain the observed levels of correlated paternity; so other factors may also be relevant for the management of this valuable forest tree species.

show abstract

Section: Discussioncontrasting

confidence: 56%

Mating system and pollen gene flow in Mediterranean maritime pine

et al. 2008

View full text Add to dashboard Cite

show abstract

“…La dispersión de polen en huertos semilleros jóvenes puede ocurrir antes que en rodales naturales, porque en árboles jóvenes el pe-riodo de crecimiento del brote generalmente inicia antes y en los huertos el espaciamiento es mayor (Torimaru et al 2009). Además, la parte baja de la copa de los árboles jó-venes, donde se desarrollan los estróbilos masculinos, está cercana al suelo donde la temperatura es mayor, lo que puede acelerar el desarrollo de los estróbilos masculinos (Lindgren et al 1995), como se demostró en huertos de Pinus sylvestris (Harju y Nikkanen 1996). En Picea abies se observó que los primeros dos días de dispersión la cantidad de polen en el huerto fue similar a la de los rodales naturales vecinos y posteriormente aumentó dentro del huerto, debido a diferencias en la fenología por el origen geográfico de los clones (Nikkanen et al 2002).…”

Section: Discussionunclassified

“…El primer factor está asociado con la capacidad y el momento de dispersión del polen; la distancia de dispersión varía en función de condiciones ambientales, como dirección y velocidad del viento, precipitación y humedad relativa (Lindgren et al 1995), y de características de la especie como morfología y tamaño de los granos de polen (Sousa y Hattemer 2003).…”

Section: Introductionunclassified

Variación espacial y temporal en la dispersión de polen en un huerto semillero y en rodales naturales cercanos de Pinus patula

Muñoz-Gutiérrez¹,

Hernández²,

López-Upton³

et al. 2017

Bosque (Valdivia)

View full text Add to dashboard Cite

“…Assessment of pollen viability is critical for the study of pollination and gene flow in natural conditions (Shivanna et al, 1991;Dafni, 1992;Mulugeta et al, 1994;Dafni and Firmage, 2000). The term viability has been used to describe pollen grains capable of germinating on the stigma (Niesenbaum, 1992), germinating in vitro (Lindgren et al, 1995), taking up stains (Nyman, 1992), and causing fruit set (Smith-Huerta and Vasek, 1984). However, flower height in the canopy, heat and sunlight, and viability on pollinator bodies have seldom been considered for tropical trees in Garhjungle sacred forest of West Bengal.…”

Section: Discussionmentioning

confidence: 99%

Effect of Environmental Factors on Pollen Viability of Tropical Trees in Garhjungle Sacred Forest Of West Bengal, India

Bhattacharya¹

2017

IOSRJPBS

View full text Add to dashboard Cite

Can viable pollen carry Scots pine genes over long distances?

Cited by 90 publications

References 7 publications

Mating system and pollen gene flow in Mediterranean maritime pine

Mating system and pollen gene flow in Mediterranean maritime pine

Variación espacial y temporal en la dispersión de polen en un huerto semillero y en rodales naturales cercanos de Pinus patula

Effect of Environmental Factors on Pollen Viability of Tropical Trees in Garhjungle Sacred Forest Of West Bengal, India

Contact Info

Product

Resources

About