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Título : The effect of temperature on stigmatic receptivity in sweet cherry (Prunus avium L.)
Autor : Hedhly, Afif ; Hormaza Urroz, José Ignacio; Herrero Romero, María
Fecha de publicación : oct-2003
Editor: Blackwell Publishing
Citación : Plant, Cell & Environment, Volume 26 Issue 10 Page 1673-1680, October 2003
Resumen: Plant reproduction is highly vulnerable to environmental conditions such as temperature and, consequently, planet warming may have significant consequences on the reproductive phase with serious implication in agricultural crops. Although pollen tube growth is clearly affected by temperature, little information is available on its effect on the female side and on flower receptivity. In this work, the effect of temperature has been evaluated on stigmatic receptivity of sweet cherry in vivo, in the laboratory, and in planta, in the field. Results herein show that temperature has a clear effect on the duration of stigmatic receptivity. Thus, whereas high temperature reduced stigmatic receptivity, low temperature enlarged it. The stigma lost the capacity to offer support first for pollen penetration, second for pollen germination and, finally, for pollen adhesion. The effect of temperature was more pronounced on pollen germination and penetration than on pollen adhesion. High temperature reduced the germination capacity of the pollen as early as the first day after anthesis, a time when no apparent signs of stigma degeneration are apparent. This clear effect of temperature on stigmatic receptivity and pollen performance may have clear implication in crop performance and in establishing screening criteria of best-adapted genotypes.
Descripción : the definitive version is available at: http://www.blackwell-synergy.com/doi/pdf/10.1046/j.1365-3040.2003.01085.x
URI : http://hdl.handle.net/10261/5206
DOI: 10.1046/j.1365-3040.2003.01085.x
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