Reduction of pollen contamination in Scots pine seed orchard crop by tent isolation

Autor:	Bengt Andersson, Ulfstand Wennström, Curt Almqvist, Takeshi Torimaru, Xiao-Ru Wang
Rok vydání:	2013
Předmět:	Genetic diversity biology Pollination fungi Scots pine food and beverages Selfing Forestry Mating system biology.organism_classification medicine.disease_cause body regions Crop Horticulture Pollen Botany medicine Seed orchard
Zdroj:	Scandinavian Journal of Forest Research. 28:715-723
ISSN:	1651-1891 0282-7581
DOI:	10.1080/02827581.2013.838298
Popis:	This study examined the differences in mating system between indoor versus outdoor Scots pine (Pinus sylvestris L.) seed orchard using DNA markers. By analyzing the paternities in seed crops from isolation tents, we found a significant reduction in contamination rate, from 23% in the outdoor open blocks to 0% inside the tents. Increase in selfing rate and a decrease in genetic diversity in the crops were also observed inside the tents. These undesirable effects can be mitigated to some extent by the supplementation of extra pollen genotypes, e.g. selfing rate decreased from 14.4% to 6.6% and the effective number of fathers increased from 6 to 11.4 in the tents without and with supplemental mass pollination, respectively. Our study showed that tent isolation may become an effective rescuer for seed orchards where pollen contamination is severe.
Databáze:	OpenAIRE
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