Variation in cone and seed traits in a clonal seed orchard of red pine (Pinus koraiensis Sieb. et Zucc.)

2020 ◽  
Vol 35 (1-2) ◽  
pp. 1-9
Author(s):  
Y. H. Weng ◽  
K. J. Liu ◽  
Y. B. Chen ◽  
Y. Li ◽  
J. Wang ◽  
...  
Keyword(s):  
Seed Orchard ◽  
Red Pine ◽  
Pinus Koraiensis ◽  
Seed Traits ◽  
Clonal Seed Orchard

scholarly journals Integrating fecundity variation and genetic relatedness in estimating the gene diversity of seed crops: Pinus koraiensis seed orchard as an example

2017 ◽  
Vol 47 (3) ◽  
pp. 366-370 ◽  
Author(s):  
Ji-Min Park ◽  
Soon-Ho Kwon ◽  
He-Jin Lee ◽  
Sung-Joon Na ◽  
Yousry A. El-Kassaby ◽  
...  
Keyword(s):  
Genetic Gain ◽  
Genetic Relatedness ◽  
Gene Diversity ◽  
Seed Orchard ◽  
Cumulative Distribution ◽  
Pinus Koraiensis ◽  
Total Production ◽  
Clonal Seed Orchard ◽  
Status Number ◽  
Seed Crops

The genetic gain and gene diversity of seed crops from a 1.5-generation clonal seed orchard of Pinus koraiensis Siebold & Zucc. were estimated under consideration of parental genetic values and fecundity variation. Fecundity variation among clones was estimated for 5 consecutive years (2010–2014) as the sibling coefficient, which was drawn from clonal contribution to the total production of seed conelet. To monitor gene diversity, status number was estimated by the integration of fecundity variation and group coancestry. Group coancestry was calculated as the average of genetic relatedness (coancestry) among orchard clones. The averages of conelet production were high in 2010 and 2011, moderate in 2013 and 2014, and poor in 2012 with a grand mean of 13.7. Correlation analysis showed that good conelet producers consistently gave good production. Cumulative distribution of clonal conelet production was presented as a function of the total conelet yield, and this distribution indicated deviation from the expected clonal equal production. Group coancesrtry was 0.0096, indicating minimal loss of gene diversity. Status number and genetic gain were higher in good than in poor conelet production years, highlighting the importance of fecundity variation in determining the genetic gain and gene diversity of seed orchard crops.

scholarly journals Mode of pollen spread in clonal seed orchard of Pinus koraiensis

2010 ◽  
Vol 01 (01) ◽  
pp. 33-39 ◽  
Author(s):  
Fu-Juan Feng ◽  
Xin Sui ◽  
Min-Min Chen ◽  
Dan Zhao ◽  
Hi-Jie Han ◽  
...  
Keyword(s):  
Seed Orchard ◽  
Pinus Koraiensis ◽  
Clonal Seed Orchard

scholarly journals Estimation of Genetic and Phenotypic Parameters for Growth Traits in a Clonal Seed Orchard of Pinus kesiya in Malawi

ISRN Forestry ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Edward Missanjo ◽  
Gift Kamanga-Thole ◽  
Vidah Manda
Keyword(s):  
Growth Traits ◽  
Seed Orchard ◽  
Direct Selection ◽  
Tree Model ◽  
Individual Tree ◽  
Individual Level ◽  
Clonal Seed Orchard ◽  
Pinus Kesiya ◽  
Individual Tree Model ◽  
The Individual

Genetic and phenotypic parameters for height, diameter at breast height (dbh), and volume were estimated for Pinus kesiya Royle ex Gordon clonal seed orchard in Malawi using an ASReml program, fitting an individual tree model. The data were from 88 clones assessed at 18, 23, 30, 35, and 40 years of age. Heritability estimates for height, dbh, and volume were moderate to high ranging from 0.19 to 0.54, from 0.14 to 0.53, and from 0.20 to 0.59, respectively, suggesting a strong genetic control of the traits at the individual level, among families, and within families. The genetic and phenotypic correlations between the growth traits were significantly high and ranged from 0.69 to 0.97 and from 0.60 to 0.95, respectively. This suggests the possibility of indirect selection in trait with direct selection in another trait. The predicted genetic gains showed that the optimal rotational age of the Pinus kesiya clonal seed orchard is 30 years; therefore, it is recommended to establish a new Pinus kesiya clonal seed orchard. However, selective harvest of clones with high breeding values in the old seed orchard should be considered so that the best parents in the old orchard can continue to contribute until the new orchard is well established.

Paternity analysis with microsatellites in a Danish Abies nordmanniana clonal seed orchard reveals dysfunctions

2006 ◽  
Vol 36 (4) ◽  
pp. 1054-1058 ◽  
Author(s):  
O K Hansen ◽  
E D Kjær
Keyword(s):  
Asymptotic Variance ◽  
Seed Orchard ◽  
Paternity Analysis ◽  
Effective Population ◽  
Population Number ◽  
Clonal Seed Orchard ◽  
Relative Contribution ◽  
Male Gametes ◽  
Abies Nordmanniana ◽  
The Status

A paternity analysis using five microsatellite markers was conducted in a Danish clonal seed orchard with 13 Abies nordmanniana (Stev.) Spach clones. The purpose was to investigate potential seed-orchard dysfunctions, with special emphasis on nonequal pollen contributions and selfing. Male paternity was found for 232 seedlings germinated from seeds collected on three ramets, each of eight clones, and the relative contribution of each clone to the gene pool of male gametes was calculated. Furthermore, 49 ramets were genotyped to check for erroneous grafting. The effect of an unbalanced male contribution was quantified by means of two measures: (1) the status number (NS), which reflects buildup of coancestry in the seed-orchard crop as a result of a low number of clones and an unequal male contribution, and (2) the asymptotic variance effective population number (Ne(v)). The contributions by pollen donors from the 13 clones were highly skewed. Three clones were fathers to more than 75% of the progenies, while making up only 24% of the ramets in the seed orchard. Four clones sired no progenies at all. The unequal contribution on the male side corresponded to NS = 4.2 and Ne(v) = 5.8. Some selfing was observed, which may give rise to concern if clonal seed orchards with few clones are established. The estimated maximum pollen contamination from outside the seed orchard was 4.3%. No grafting–labelling errors were identified.

scholarly journals IDENTIFICATION OF TEAK MISTLETOE SPECIES AND BASIC INFORMATION OF UTILIZATION AS MEDICINAL PLANT

2016 ◽  
Vol 7 (3) ◽  
pp. S61-S63
Author(s):  
Zainal Muttaqin ◽  
Sri Wilarso Budi R ◽  
Basuki Wasis ◽  
Iskandar Z Siregar ◽  
Corryanti .
Keyword(s):  
Medicinal Plant ◽  
Seed Orchard ◽  
Forest Product ◽  
Hemiparasitic Plants ◽  
Clonal Seed Orchard ◽  
Host Trees ◽  
Key Species ◽  
Chemical Content ◽  
High Control ◽  
Attack Intensity

Mistletoe is hemiparasitic plants (macroparasite) on seasonal and annual plants include trees, however, mistletoes are also beneficial as key species that fill in the ecological niche, and a potential to non-wood forest product such as medicinal plants as one of them. The objectives of this research are to identify species of teak mistletoes at Padangan Clonal Seed Orchard (CSO) in Perum Perhutani and to aim its posibilities as medicinal plant. The inventory methods on species of teak mistletoes was carried out in compartements/blocks of teak clones that are designated as Observation Sample Plots (OSPs/PCP) of the attack intensity from low, medium, high, control; and four units Observation Measurement Plots (OMPs/PUP) on each OSPs/PCP. Continously, it was analized by comparing the same species of mistletoes on other host trees as reference which was efficacious to be used as medicinal plant. Three species of mistletoes parasitizing teak clone stands were identified as Dendrophthoe pentandra (L.) Miq. of family of Loranthaceae which is also attacking other host trees, Macrosolen tetragonus (Blume) Miq. of family of Loranthaceae too, Viscum articulatum Burm. F. of family of Santalacea/Viscaceae that is hyperparasite on two other mistletoes. The comparison with the same teak mistletoe but on different host trees shows that including D. pentandra and V. articulatum have the potential for hypertension treatment. D. pentandra is used too for medicine to cure ilness, wounds, fester and recovery from parturition. Known that chemical content this mistletoe comprise of flavonoid ingrident, fenolat acid (terulat acid, para hidroksi benzoate acid, kumarat acid, protokatekuat acid and vanilat acid. As for the utilization of M. tetragonus hasn’t been discovered up to this moment.Key words: mistletoe, identification, teak clone, non-wood forest product, medicinal plant

scholarly journals Seed Germination Variation among Crop Years from a Pinus sylvestris Clonal Seed Orchard

2019 ◽  
pp. 1-14
Author(s):  
Melusi Rampart
Keyword(s):  
Seed Germination ◽  
Seed Weight ◽  
Seed Orchard ◽  
Climatic Conditions ◽  
Thermal Time ◽  
Base Temperature ◽  
Germination Capacity ◽  
Seed Collection ◽  
Clonal Seed Orchard ◽  
The Mean

Maternal effects were assessed by germinating seeds sourced over multiple years from the same cloned mother trees, comparing germination capacity and rate between crop years. The relationships between climatic variables, seed characteristics and germination capacity were determined, and thermal time parameters were used to predict seed dormancy release and germination under the climatic conditions in the year after seed collection. There were significant differences in seed weight (P < 0.05), seed length and embryo occupancy (both P < 0.001) among crop years. Temperature during the seed development period explained 70% of the variation in seed weight and 63% of the variation in embryo occupancy. Germination capacity was significantly (P <0.001) different among crop years, among temperatures and among chilling durations, and thermal time requirements for germination increased from older (2007) to younger (2012) seeds. The mean base temperature without chilling was 7.1°C, while after chilling it was 4.6°C and 3.6°C for four and eight weeks chilling respectively. The mean thermal time to 50% germination without chilling was 135.1°Cd, while after chilling it was 118.3°Cd and 154.0°Cd for four and eight weeks chilling respectively. This experiment demonstrates that year-to-year differences in the environment experienced by mother trees during seed maturation can affect seed germination characteristics.

scholarly journals Estimating economic benefits of urban conifers in terms of abatement of ultrafine dust (PM2.5)

2020 ◽  
Vol 2 (1) ◽  
pp. 81-96
Author(s):  
Soo Min Shin ◽  
Song Soo Lim ◽  
Yongsung Cho
Keyword(s):  
Leaf Area ◽  
Flow Rate ◽  
Tree Species ◽  
Economic Benefits ◽  
Red Pine ◽  
Pinus Koraiensis ◽  
Content Type ◽  
Circulatory System Diseases ◽  
Hospital Visits ◽  
Circulatory Diseases

PurposeThis study aimed to estimate the economic benefits of PM2.5 emission abatement by Red Pine, Pinus Koraiensis and Quercus, using a metering model analyzing the amount of PM2.5 absorption in Korea.Design/methodology/approachTo estimate the economic effects of PM2.5 adsorptions by trees, the frequency of hospital visits resulting from respiratory and circulatory diseases was estimated using a Probit model based on the data from National Health and Nutrition Survey.FindingsThe results show that Quercus and Pinus Koraiensis absorb and eliminate the largest amount of PM2.5. Reducing 1 ton of PM2.5 emission through the planting of trees leads to lower incidences of respiratory and circulatory diseases equivalent to the amount of 95 million won. When the trees planted are 2-year-old Red Pine, Pinus Koraiensis and Quercus, the resulting economic benefits of the PM2.5 abatement would amount to 481 million won, 173 million won and 1,027 million won, respectively. If the trees are 80 years old, the economic benefits are estimated to be 73 billion won for Red Pine, 103 billion won for Pinus Koraiensis and 38 billion won for Quercus.Research limitations/implicationsOne limitation of this study is that the weight of PM2.5 adsorbed by each leaf area entirely depended on the experimental results from a prior study and the values are likely to be different from those actually absorbed in natural surroundings. In addition, because of the lack of data from a domestic survey on the surface of leaf area or the reload flow rate of PM2.5, this study referred to data from foreign research. Unfortunately, this specific data may not reflect climatic and terrain characteristics specific to the target country. We used the annual wind speed to calculate the reload flow rate and elimination volume; however, the figures could be more accurate with hourly or daily climate variations. When estimating the health benefits of changes in PM2.5 emissions on respiratory and circulatory diseases, more segmented access to patients' hospital visits and hospital admissions are desirable. Finally, the study focused on the three major tree species of Korea, however, a more detailed study of PM2.5 reduction by various tree types is needed in the future.Originality/valueThis paper quantitatively assessed the amount of PM2.5 adsorption by each of the three tree species. Then, the economic benefits were calculated in terms of how much money would be saved on hospital visits thanks to the reduced PM2.5 levels and lower incidences of respiratory and circulatory system diseases. The net contribution of this study was to prove the trees' function of reducing PM2.5 as it relates to human health. We focused on the most common trees in Korea and compared them to provide new information on the species.

scholarly journals Genetic variation, mating patterns and gene flow in a Pinus pinaster Aiton clonal seed orchard

2008 ◽  
Vol 65 (7) ◽  
pp. 706-706 ◽  
Author(s):  
Lúcia Fernandes ◽  
Margarida Rocheta ◽  
Jorge Cordeiro ◽  
Sandra Pereira ◽  
Sophie Gerber ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Gene Flow ◽  
Pinus Pinaster ◽  
Seed Orchard ◽  
Mating Patterns ◽  
Clonal Seed Orchard

scholarly journals Fertility Variation and Genetic Diversity in a Clonal Seed Orchard of Cryptomeria japonica

2005 ◽  
Vol 54 (1-6) ◽  
pp. 104-107 ◽  
Author(s):  
K. S. Kang ◽  
Y. A. El-Kassaby ◽  
M. S. Chung ◽  
C. S. Kim ◽  
Y. J. Kang ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Cryptomeria Japonica ◽  
Seed Orchard ◽  
Clonal Seed Orchard ◽  
Fertility Variation ◽  
The Status ◽  
Status Number ◽  
Census Number ◽  
Male Strobilus ◽  
Male Strobili

Abstract Clonal differences in fertility (expressed as the number of female and male strobili) were determined for three consecutive years (2002-2004) in a clonal seed orchard of sugi (Cryptomeria japonica D. Don) in Korea. Fertility varied among clones and among years producing three-year averages of 196 and 652 for female and male strobili per ramet, respectively. Correlation between female and male strobilus production was positive over the three years and statistically significant in 2003, a good flowering year. Based on the observed fertility variation, the status numbers (Ns, measure of genetic diversity) were calculated and varied from 25.6 to 31.7 among the three studied years. On average (pooled), relative status number was 86% of the census number (N). Variation in female fertility was higher than that in male fertility, and this variation was reflected on female and male parents’ status numbers. Pooled Ns estimated from the three years was higher than that for any single year, implying that genetic diversity would increase when seeds collected from different years are pooled.

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