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- W1494433083 abstract "The present work was developed with the objective of evaluating the variation in collected samples of pollen of the population of Pinus hartwegii Lindl. from 15 trees of Cofre de Perote, Veracruz, Mexico with the end to contribute to the clarification of the causes that it motivate the drop viability of their seeds. It was evaluated the following characters the pollen: long, wide and relationship long/wide and the viability of the pollen by means of the application of five stain methods (blue of toluidine in ethanol, cotton blue in lactophenol, aceto orceina, aceto carmin and solution of lugol). The germinative capacity and the longitude of the pollen tube growth were evaluated at the 24 hours (20% sucrose solution). It was verified that the pollen of this species is characterized to present among 42.3 to 79.9 microns long for 42.3 to 89.3 microns wide, their relationship long/wide fluctuates among 0.5 to 1.33 microns. Significant differences were not detected among trees for the germinative capacity of the pollen, but if among stain methods. The method blue of toluidine in ethanol showed the highest percentages of viability, superiors to 80%. S method of toluidine, it didn’t seize for the germinative capacity of pollen. The trees with more germinative capacity those that presented the biggest values in longitude of the pollen tube growth. The longitude of the pollen tube growth reached oscillated among 94 to 681.5 microns. The combined analysis of the results indicates that the viability of the pollen doesn't constitute a restrictive factor in the production of this population's seeds." @default.
- W1494433083 created "2016-06-24" @default.
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- W1494433083 date "2003-01-01" @default.
- W1494433083 modified "2023-09-25" @default.
- W1494433083 title "Evaluación del polen en Pinus hartwegii Lindl. Del Cofre de Perote, Veracruz, México" @default.
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