scholarly journals Analysis of intrapopulation variability of bald cypress (Taxodium distichum L. Rich.) in a seed stand near Backa Palanka using morphometric markers

2013 ◽  
Vol 65 (3) ◽  
pp. 1093-1103 ◽  
Author(s):  
V. Popovic ◽  
A. Lucic ◽  
Mirjana Sijacic-Nikolic ◽  
Tatjana Cirkovic-Mitrovic ◽  
Ljubinko Rakonjac ◽  
...  
Keyword(s):  
Morphometric Characters ◽  
Bald Cypress ◽  
Intrapopulation Variability ◽  
Starting Point ◽  
Biological Similarity ◽  
Length Width ◽  
Collar Diameter ◽  
Planting Materials ◽  
Root Collar ◽  
Seed Stand

In this paper are presented the results of an analysis of intrapopulation variability using morphometric markers of 20 Bald cypress test trees originating from seed stand S 01.10.01.01 near Backa Palanka. The morphometric characters of cones (length, width and number of grains) and seedlings (root collar diameter and height of seedling) that were produced by this seed were analyzed. A mutual biological similarity or distance of mother trees depending on the analyzed characters was tested. The determined values of the dimensions of cones and seedlings indicate the good genetic and adaptive potential of this species, which can be a starting point for the mass production of Bald cypress seed and planting materials in Serbia.

scholarly journals Variability in cone morphometric characters among test trees of Bald cypress (Taxodium distichum L. Rich.) in seed stand near Bačka palanka

2012 ◽  
pp. 15-26
Author(s):  
Vladan Popović ◽  
Mirjana Šijačić-Nikolić ◽  
Ljubinko Rakonjac ◽  
Dušan Jokanović
Keyword(s):  
Taxodium Distichum ◽  
Forest Species ◽  
Adaptive Potential ◽  
Morphometric Characters ◽  
Bald Cypress ◽  
Planting Material ◽  
Starting Point ◽  
The Family ◽  
Seed Stand

Bald cypress is monoecious, long-lived, deciduous conifer. It belongs to the family Taxodiaceae and genus Taxodium. In Serbia, there is only Taxodium distichum (L.) Rich. that mostly can be found in the green areas of major cities. The possibility of wider application of Bald cypress as a forest species should be based on an assessment of its genetic and adaptive potential, quantity and quality of yield, primarily at the level of the existing Bald cypress seed stand. In this paper are presented research results of the variability in cone morphometric characters among 20 test trees. The determined values of cone dimensions indicate good genetic and adaptive potential of this species that can be considered as starting point for the mass production of quality seed and planting material in Serbia.

scholarly journals Analysis of inter-line variability of bald cypress (Taxodium distichum L. rich.) juvenile seedlings using morphometric markers

Genetika ◽  
2014 ◽  
Vol 46 (1) ◽  
pp. 117-128
Author(s):  
Vladan Popovic ◽  
Aleksandar Lucic ◽  
Mirjana Sijacic-Nikolic ◽  
Tatjana Cirkovic-Mitrovic ◽  
Ljubinko Rakonjac ◽  
...  
Keyword(s):  
Mass Production ◽  
Taxodium Distichum ◽  
Adaptive Potential ◽  
Morphometric Characters ◽  
Bald Cypress ◽  
Planting Material ◽  
Starting Point ◽  
Relationship Of

In this paper are presented results of the analysis of inter-line variability of morphometric characters of Bald cypress juvenile seedlings at the level of 20 half-sib lines. Obtained results contribute to better understanding of relationship of analyzed characters, as well as the influence of analyzed characters to the differentiation of half-sib lines. Based on these results, differences were observed in the values of the analyzed characters for each half-sib line individually. The determined values of seedlings? size indicate good genetic and adaptive potential of this species, which can be considered as a starting point for the mass production of quality planting material and its use in Serbia.

scholarly journals Growth of bare root Pinus taeda, L. seedlings cultivated under five densities in nursery

2007 ◽  
Vol 64 (1) ◽  
pp. 23-29
Author(s):  
José Geraldo de Araújo Carneiro ◽  
Deborah Guerra Barroso ◽  
Luis Maurício da Silva Soares
Keyword(s):  
Pinus Taeda ◽  
Dry Matter ◽  
Root Systems ◽  
Root Collar Diameter ◽  
Plant Densities ◽  
Collar Diameter ◽  
Bare Root ◽  
Pinus Taeda L ◽  
Root Collar ◽  
Dry Matter Weight

Seedlings compete for nutrients, water and light. The available area for each seedling affects their behavior related to requirements for these resources. This experiment evaluated the influence of five plant densities on the growth of bare root Pinus taeda, L. seedlings in a nursery after outplanting. The analyzed characteristics were: height (H), root collar diameter (D), H/D ratio, and dry matter weight. Higher densities stimulated H growth and the lowest densities increased D average and dry matter weight and lowered the H/D ratio. Seedlings were distributed by H, D and H/D classes. Higher densities had a larger number of seedlings in larger H classes. Larger numbers of seedlings with larger D and lower H/D ratios were found in lower densities. Ten months after outplanting the seedlings grown in lower densities had higher survival percentages and growth. Some saplings of standardized heights were uprooted with the objective of studying their root systems. The lowest densities stimulated higher numbers of first and second order roots as well as fresh and dry matter weights of thin roots with mycorrhizae presence. In both parts of the experiment, the density of 278 seedlings m-2 yielded equivalent averages as compared to the lowest densities.

scholarly journals Estimates of genetic gains for growth traits in young plants of Eucalyptus urophylla S. T. Blake

CERNE ◽  
2011 ◽  
Vol 17 (2) ◽  
pp. 189-193 ◽  
Author(s):  
Thais Galhardo Godoy ◽  
Sebastião Carlos da Silva Rosado
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Growth Traits ◽  
Block Design ◽  
Genetic Gains ◽  
Random Block ◽  
Collar Diameter ◽  
Random Block Design ◽  
Root Collar ◽  
Dickson Quality Index

The objective of this study was the selection of superior genotypes for growth traits, correlating them to initial height growth in the field, at age eight months. A random block design was used in the nursery, with eight clones, three replicates and four plants per plot. And a random block design was also used in the field, with eight clones, four replicate blocks and nine plants per plot. Data being analyzed in the nursery at age 120 days included: height of field seedling, at age eight months (Hc), height of nursery seedling (Hm), root collar diameter (Dc), shoot diameter (Db), shoot dry matter (PMSPA), root dry matter (PMSR), total dry matter (PMST), ratio of shoot dry matter to root dry matter (PMSPA/PMSR), Dickson quality index of root collar diameter (IQD-Dc), Dickson quality index of shoot diameter (IQD-Db). Analyses of variance showed that significant genetic differences exist among clones for all traits and, given the high heritability values found, the estimated genetic gains were generically very high. As for predicted indirect genetic gain, selection in nursery seedlings for Dc, PMSPA/PMSR, IQD-Dc provided the highest values of indirect gain in field seedling height.

scholarly journals Asymbiotic germination and morphological studies of seeds of Atlantic Rainforest micro-orchids (Pleurothallidinae)

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0243297
Author(s):  
Franciele Marx Koene ◽  
Érika Amano ◽  
Eric de Camargo Smidt ◽  
Luciana Lopes Fortes Ribas
Keyword(s):  
Developmental Stages ◽  
Morphometric Study ◽  
Morphometric Characters ◽  
Orchid Species ◽  
Morphological Studies ◽  
Germination Process ◽  
Length Width ◽  
Asymbiotic Germination ◽  
Protocorm Formation

The morphological and morphometric characters of seeds belonging to 11 species of the subtribe Pleurothallidinae using light and scanning electron microscopy were studied to understand the in vitro germination process. Qualitative data (color, shape, ornamentation) and quantitative ones were also evaluated in seeds and embryos (length, width, volume and air space percentage between the integument and the embryo). The viability of the seeds was evaluated by in vitro germination in woody plant medium (WPM), and by analysis of the developmental stages of protocorms until seedling formation (two to 24 weeks). Morphometric data showed variations within the genus Acianthera and between species of different genera. The best germination and protocorm formation responses occurred with Acianthera prolifera (92%) and Acianthera ochreata (86%), with the formation of seedlings after 12 and 16 weeks of sowing, respectively. The seeds and embryos of A. prolifera and A. ochreata were larger (length, width, and volume) with a structural polarity that may have facilitated their germination comparing to others studied species. Other characteristics of A. prolifera seeds that may have contributed to these results include the presence of a thin testa without ornamentation and a suspensor. The protocorms of Anathalis obovata, Dryadella liliputiana, and Octomeria gracillis developed slowly in the WPM, not reaching the seedling stage in 24 weeks of cultivation. This morphological and morphometric study contributes to the understanding of asymbiotic germination of some micro-orchid species.

scholarly journals Growth Regulators Affect the Growth and Biochemical Activity of Curcuma longa Plants Grown in vitro

2019 ◽  
Vol 11 (10) ◽  
pp. 277 ◽  
Author(s):  
Meire Pereira de Souza Ferrari ◽  
Mayara dos Santos Queiroz ◽  
Matheus Marquezini de Andrade ◽  
Jessica Rezende Trettel ◽  
Hélida Mara Magalhães
Keyword(s):  
Antioxidant Activity ◽  
Enzymatic Activity ◽  
Growth Regulators ◽  
Curcuma Longa ◽  
Ms Medium ◽  
Biochemical Activity ◽  
Root Collar Diameter ◽  
Collar Diameter ◽  
Root Collar

This study aimed to evaluate the in vitro growth and biochemical activity of Curcuma longa explants using different MS medium formulations and growth regulators. In all the experiments, plants were grown in MS medium supplemented with agar (6.5 g L-1) and pH adjusted to 5.8. In the first assay, the MS culture medium at 70% strength, supplemented with 30 g L-1 of sucrose, and without the addition of activated carbon, resulted in the highest number of shoots. The sucrose concentration of 60 g L-1, combined with the addition of actived charcoalin half-strength MS medium, resulted in the increased root dry mass, root collar diameter, and relative chlorophyll index. In the second assay, the highest root collar diameter and dry matter of shoots and roots were found in the MS medium supplemented with 4.44 BAP, 0.46 KIN, and 1.08 NAA. The MS medium with 8.88 BAP, 0.92 KIN, and 2.16 μM NAA resulted in the highest number of shoots (7.75), number of leaves (35), and shoot length (88.57 mm). The antioxidant activity was significantly higher in the treatments that resulted in better plantlets growth performance, demonstrating that the antioxidant activity is related to other factors such as a possible role of growth regulators on the elicitation of compounds in plants. Superoxide dismutase had a high enzymatic activity in both assays, whereas the enzymatic activity of catalase and ascorbate peroxidase was dependent on the culture media used.

scholarly journals Gübrelemenin Kayacık (Ostrya carpinifolia Scop.) Fidanlarının Morfolojik Gelişimine Etkisi

2016 ◽  
Vol 4 (10) ◽  
pp. 813 ◽  
Author(s):  
Şemsettin Kulaç ◽  
Özge Yıldız
Keyword(s):  
Morphological Characteristics ◽  
Vegetation Period ◽  
Morphological Characters ◽  
Morphological Development ◽  
Compound Fertilizer ◽  
Seedling Length ◽  
Collar Diameter ◽  
Root Collar ◽  
Ostrya Carpinifolia ◽  
Made In

In this study, in order to help the mass production of seedlings, the effect of fertilization on the morphological development of hornbeam leafy European hophornbeam (Ostry carpinifolia Scop) seedlings were investigated. For this, seedlings, which were obtained from the seeds coming from different European hophornbeam populations (Düzce-Yığılca, Antalya-Finike, Antalya-Akseki, Kastamonu-Şehdağ ve Adana-Saimbeyli) from various parts of Turkey, were used. European hophornbeam seedlings were treated with different fertilizers, including urea, ammonium sulphate, compound fertilizer 15-15-15 and 20-20-0, and 6-9 months Osmocote release fertilizer, and effects of these fertilizers on the morphological characters were investigated. Fertilization contained the same amount of nitrogen, and was made in three different ways; (1) mixing with habitat, (2) topical application and (3) liquid application. The development of germinated European hophornbeam seeds, which were spring-sowed in the same medium were monitored during the vegetation period. At the end of vegetation period, seedlings were removed from the soil and morphological characteristics of root (seedling length, root collar diameter, root length, fresh root and stem weight of the seedlings, dried root and stem weight of the seedlings and bud number) were measured. As a result, it was observed that fertilization positively affects the development of seedlings and depending on the fertilization type the seedlings of European hophornbeam populations were found to exhibit different improvements/growing. In addition, 6-9 months Osmocote release fertilizers were determined to be the best fertilizers affecting the morphological (diameter and height) development of European hophornbeam populations effectively, and among the populations, Düzce and Kastamonu populations showed the best improvement/growing.

scholarly journals Relationship between morphological and physiological attributes of hop hornbeam seedlings

2013 ◽  
pp. 39-50 ◽  
Author(s):  
Vladan Ivetic ◽  
Zoran Davorija ◽  
Dragica Vilotic
Keyword(s):  
Potassium Concentration ◽  
Growing Season ◽  
Dry Mass ◽  
Seedling Quality ◽  
Strong Positive Correlation ◽  
Strong Correlations ◽  
Morphological Attributes ◽  
Collar Diameter ◽  
Root Collar ◽  
Ostrya Carpinifolia

Most commonly used morphological attributes were correlated with nutrient concentration in order to standardize quality assessment of two-year-old hop hornbeam (Ostrya carpinifolia Scop.) seedlings. Diameter has proven to be the best single morphological indicator of seedling quality given its strong positive correlation with all other observed morphological attributes. Seedling dry mass (shoot and root dry mass) and Dickson Quality Index can be considered the most comprehensive indicators of hop hornbeam seedling quality. However, the measuring of mass is destructive and requires a certain amount of time. The absence of strong correlations between physiological and morphological attributes of two-year old seedlings of hop hornbeam suggests the need for further research. The only significant correlation between physiological and morphological attributes (weak and positive) was recorded between the potassium concentration in root and root collar diameter after the second growing season.

scholarly journals Growth performance and resistance to ground late frosts of Fagus sylvatica L. plantation treated with a brassinosteroid compound

2017 ◽  
Vol 63 (No. 3) ◽  
pp. 117-125
Author(s):  
Gallo Josef ◽  
Baláš Martin ◽  
Linda Rostislav ◽  
Kuneš Ivan
Keyword(s):  
Mortality Rate ◽  
Growth Performance ◽  
European Beech ◽  
Frost Damage ◽  
Control Treatment ◽  
Initial Growth ◽  
Height Range ◽  
Fagus Sylvatica L ◽  
Collar Diameter ◽  
Root Collar

We measured the initial growth performance of a young plantation of European beech treated with a brassinosteroid compound prior to planting and compared it with a control treatment: we assessed heights, root collar diameters and mortality rate during the period 2012–2015. The trees showed posterior damage by ground frost after a substantial late frost event on the night of 4–5 May 2014. Therefore, we evaluated the post-stress vitality of trees, subsequent height increment from spring to August, and the height range of the damage.<br />Mean height, root collar diameter, and mortality rate did not show any significantly better performance in the brassinosteroid treatment over the control treatment. Neither did the application treatment have a significant positive effect on the resistance of beech to late frosts. The severe frost damage was most intense at 30 cm above ground, and rapidly declined with increased height.

Survival and Development of VAM Containerized Yellow-Poplar Seedlings

1989 ◽  
Vol 6 (1) ◽  
pp. 20-22 ◽  
Author(s):  
Ronald L. Hay ◽  
John C. Rennie ◽  
Victor L. Ford
Keyword(s):  
Mine Spoil ◽  
Agricultural Field ◽  
Yellow Poplar ◽  
Species Survival ◽  
Survival And Development ◽  
Glomus Species ◽  
Strip Mine ◽  
Collar Diameter ◽  
Root Collar ◽  
Poplar Seedlings

Abstract Containerized yellow-poplar seedlings grown for 19 weeks, in VAM (Glomus mosseae anti G. fasciculatum)-inoculated media, were outplanted on a strip mine spoil, an abandoned agricultural field, and a previously wooded site. Survival was significantly greater for the VAM treatments than for the control, but there were no differences between the two Glomus species. Survival was greatest on the mine spoil, where there was minimal competing vegetation; seedlings grew well enough to establish a plantation. Height and root collar diameter were significantly greater for the VAM seedlings than for the nonmycorrhizal seedlings. G. fasciculatum-colonized seedlings were consistently largest of all treatments. The previously wooded site produced the tallest seedlings. North. J. Appl. For. 6:20-22, March 1989.

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