Mating patterns in an indoor miniature Cryptomeria japonica seed orchard as revealed by microsatellite markers

Moriguchi, Yoshinari; Yamazaki, Yoshio; Taira, Hideaki; Tsumura, Yoshihiko

doi:10.1007/s11056-009-9169-0

Cited by 15 publications

(9 citation statements)

References 32 publications

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“…Various management practices have been proposed for reducing pollen contamination in forest tree seed orchards. These practices include supplemental mass pollination (Korecký and El-Kassaby 2016;Stoehr et al 2006), water cooling to delay strobilus production (El-Kassaby and Davidson 1991;Song et al 2018) and greenhouse-like structures (Funda et al 2016;Moriguchi et al 2010;Torimaru et al 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Plomion et al (2005) subsequently used nuclear microsatellites and revealed similar high pollen contamination rates in second-generation seed orchards (32% to 81%). Medium-to-high levels of pollen contamination have been reported in conifer species: 28% in Pinus thumbergii (Suharyanto et al 2012), 49% in Cryptomeria japonica (Moriguchi et al 2010), 12-35% in Pseudotsuga menziesi (Korecký and El-Kassaby 2016; Slavov et al 2005), 27% in Picea glauca (Galeano et al 2021), 58% in Picea abies (Dering et al 2014), 5-52% in Pinus sylvestris (Funda et al 2015; Torimaru et al 2009), and 86% in Pinus brutia (Kaya et al 2006).…”

Section: Discussionmentioning

confidence: 99%

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Pollen contamination and mating structure in maritime pine (Pinus pinasterAit.) clonal seed orchards revealed by SNP markers

Bouffier

Debille

Alazard

et al. 2022

Preprint

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Maritime pine (Pinus pinaster Ait.) is a major forest tree species in south-western Europe. In France, an advanced breeding program for this conifer species has been underway since the early 1960s. Open-pollinated seed orchards currently supply more than 90% of maritime pine seedlings for plantation forestry. However, little is known about pollen contamination and mating structure in such seed orchards for maritime pine. We analyzed these features here, focusing on: i) the location of the seed orchard, ii) the year of pollination, and iii) the genotype of the tree from which seeds were collected. Parental analyses based on an optimized set of 60 SNP markers were performed on 2,552 seedlings with Cervus software (likelihood inference methodology). Pollen contamination rates were highly variable between seed lots (from 20 to 96%), with a mean value of 50%. Several interpretative factors were highlighted, including the distance between the seed orchard and external pollen sources, rain during the pollination period, seed orchard age, soil characteristics and seed parent identity. All parental genotypes contributed to the offspring as pollen parents, but differences in paternal reproductive success were detected. These differences were only partly explained by differences in the number of ramets of each parental genotype deployed in each seed orchard. Finally, the overall self-fertilization rate was estimated at 5.4%, with considerable variability between genotypes. These findings are useful to formulate recommendations for seed orchard management and for identifying new research perspectives.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Pollen contamination and mating structure in maritime pine (Pinus pinasterAit.) clonal seed orchards revealed by SNP markers

Bouffier

Debille

Alazard

et al. 2022

Preprint

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“…It may therefore be more difficult to implement BWB for C. japonica until a larger selection differential between the breeding materials and contamination source can be obtained by further tree breeding. The use of an indoor seed orchard Taira 2005, 2006;Moriguchi et al 2010) is one possible method that could be used to reduce the contamination rate, but it is still test phase. Using a single progeny test, we detected adverse effects of contaminating pollen on the straightness of trees.…”

Section: Real Genetic Gain Of Improved Materialsmentioning

confidence: 99%

Paternity analysis in a progeny test of Cryptomeria japonica revealed adverse effects of pollen contamination from outside seed orchards on morphological traits

Moriguchi

Yomogida

Iwata

et al. 2011

Tree Genetics & Genomes

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To evaluate the effects of pollen contamination from outside of Cryptomeria japonica seed orchard on the growth performance (height and diameter at breast height, DBH) and morphological traits (stem straightness and basal stem straightness), paternity testing using seven microsatellite markers was performed in a progeny test. In the studied progeny test, high rates of inconsistency were found between the observed and expected genotypes. The average rates of pollen contamination from outside the orchard and self-fertilization were 58.47% and 0.65%, respectively. We divided the individuals of the studied progeny test into two groups based on their genotype data, for which: (1) both parents were elite trees and (2) only the mother trees were elite trees, and then compared them with respect to the growth performance and morphological traits of progenies using data at 20 and 30 years old. Significant adverse effects of contaminating pollen were detected in relation to straightness, but not tree height and DBH. The results suggest that the genetic gains for straightness generally show higher narrow-sense heritability than growth traits, which should be increased by reduction of pollen contamination. Breeding with paternal analysis (BWPA) is an effective approach for evaluating breeding materials based on maternal and paternal information revealed by DNA markers. The use of BWPA in progeny test allows effective forward-and backward selection without laborious and time-consuming tasks. In this study, we also suggest that the significant pollen contamination and paternal deviation found in the open-pollinated progeny test are serious impediments for BWPA.

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“…and Pinus banksiana Lamb., hedge-type MSOs for Pinus radiata D. Don, and indoor containerized orchards and arboreta for Picea mariana (Mill.) Britton, Chamaecyparis lawsoniana (A. Murray bis) Parl., Thuja plicata Donn ex D. Don, and Cryptomeria japonica (Sweet and Krugman 1977;Adams and Tosh 1998;Moriguchi et al 2010;Sniezko et al 2012). For coastal Douglas-fir, which has very rapid vegetative growth, outdoor MSOs seem like the most promising alternative to conventional orchards.…”

Section: Introductionmentioning

confidence: 99%

High-density miniaturized seed orchards of Douglas-fir

Kolpak

Smith²,

Albrecht

et al. 2014

New Forests

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We studied miniaturized seed orchards (MSOs) and conventional orchards of coastal Douglas-fir (Pseudotsuga menziesii var. menziesii) in a series of experiments conducted at three locations in Oregon and Washington between 2002 and 2012. In Experiment 1, cone yields were greater using stem girdles plus stem injections of GA 4/7 compared to girdling alone, root pruning, and girdling plus fertilization with Ca(NO 3 ) 2 . In Experiment 2, topping and pruning in the summer following flower stimulation minimized crown volume and maximized female and male flower densities. In Experiment 3, the widest spaced orchard (4 9 6 m) generally produced more flowers and cones per tree, and greater flower and cone densities compared to the narrow spaced orchards (1 9 3 and 2 9 4 m). We conclude that narrow spaced MSOs may produce more cones per hectare in the early years after establishment, but wider spaced orchards will be more productive a few years later. In general, per-hectare cone yields were similar or greater in the MSOs compared to nearby conventionally spaced orchards. Trees grafted using scions collected from juvenile trees (age 6) generally had larger crowns, more female flowers and cones per tree, and greater female flower and cone densities compared to scions collected from middle-aged (age 29) or mature (56-to 99-year-old) trees. We found no evidence that clonal rows resulted in reduced seed quality relative to nearby conventional orchards. Implications for Douglas-fir seed orchard management are discussed.

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Mating patterns in an indoor miniature Cryptomeria japonica seed orchard as revealed by microsatellite markers

Cited by 15 publications

References 32 publications

Pollen contamination and mating structure in maritime pine (Pinus pinasterAit.) clonal seed orchards revealed by SNP markers

Pollen contamination and mating structure in maritime pine (Pinus pinasterAit.) clonal seed orchards revealed by SNP markers

Paternity analysis in a progeny test of Cryptomeria japonica revealed adverse effects of pollen contamination from outside seed orchards on morphological traits

High-density miniaturized seed orchards of Douglas-fir

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