文献类型：期刊文献

英文题名：Pollen dispersal, mating patterns and pollen contamination in an insect-pollinated seed orchard of Schima superba Gardn. et Champ

作者：Yang, Hanbo[1] Zhang, Rui[1] Zhou, Zhichun[1]

第一作者：Yang, Hanbo

通信作者：Zhang, Rui|[a000579b073519d16c8aa]张蕊;

机构：[1] Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang Provincial Key Laboratory of Tree Breeding, Hangzhou, China

年份：2017

卷号：48

期号：3

起止页码：431-444

外文期刊名：New Forests

收录：EI(收录号：20170403273516);Scopus(收录号：2-s2.0-85009921499)

语种：英文

外文关键词：Contamination - Forestry - Orchards

摘要：Pollen flow and mating patterns are the most important factors influencing the genetic structure of insect-pollinated forest trees and are essential parts of genetic management in seed orchards. We investigated pollen flow, the mating system and the level of pollen contamination in a clonal seed orchard of Schima superba Gardn. et Champ. In total, 328 open-pollination progenies coming from 11 mother trees were identified using 13 polymorphic microsatellite loci. A total of 203 full-sib families were identified and were nested among the 11 studied seed donors. The male reproductive success rate from 0.49 to 7.77% for most male parents, with an average of 2.44%. More than 80% of the crosses were found within a distance of 60?m, and the most frequent pollination distance between female parent and male parents was approximately 20?m. Mating system analysis showed that the outcrossing level was very high (tm?=?1.000, outcrossing rate?=?98.5%) in the seed orchard and that there was an average of 2.3 effective pollen donors (Nep) per female parent. In addition, the mating success of individual males within neighborhoods was moderately influenced by their fecundity and the direction of their location relative to mother trees. The pollen contamination from outside the seed orchard was high (7.01%). Our findings are valuable for the assessment of seed orchards, and it may be worthwhile to use pollen management strategies to decrease pollen contamination and increase the genetic quality of the seeds produced. ? 2017, Springer Science+Business Media Dordrecht.