Morphological Characteristics Of Seedlings Research Articles

Initial Growth of Red Tent Seedlings (Adenanthera Pavonina l.) In Soil Enriched with Different Doses and Nitrogenous Sources

Purpose: To evaluate the initial growth of red tent seedlings in different doses and sources of N. Theoretical framework: Based on scientific articles found on search engines and books in the area of soil fertility and plant nutrition. This is to support the explanation of how the morphological characteristics of seedlings, which explain their growth, are affected by nitrogen fertilization, depending on the dose and source of fertilizer applied. Method: The experiment was carried out in a completely randomized design with five doses of N and five replications, using urea and ammonium sulfate as sources, which were evaluated separately. The doses tested were: T0 – without addition of N; T1 – 50 mg dm-3; T2 – 100 mg dm-3; T3 – 150 mg dm-3; T4 – 200 mg dm-3, for each source tested. At the end of 90 days, the morphological characteristics of the seedlings were evaluated: height, diameter, height/diameter ratio, dry mass of the aerial part, dry mass of the root part, aerial dry mass/root dry mass ratio, height/aerial dry mass ratio and, Dickson quality index. Results and conclusion: Growth, dry mass production and seedling quality were greater at a dose of 200 mg dm-3 when using urea as a source of N. When the source was ammonium sulfate, the greatest growth in height occurred at a dose of 100 mg dm-3, however, the greatest growth in diameter, the greatest production of dry mass and quality, were observed at a dose of 200 mg dm-3. This is the recommended dose for the species studied. Research implications: These results indicate that nitrogen fertilization is essential for the quality growth of red seedlings, and the dose to be applied is essential for this to happen, since values lower than this dose may not allow the plant to perform at its maximum. growth potential. Meanwhile, higher doses do not guarantee greater growth and will result in unnecessary expenses and, probably, loss of growth due to toxicity. Originality/value: Using nitrogen fertilizers, in the correct dose for the species, increases its growth potential and guarantees the production of quality seedlings within the nursery.

Study of morphological characteristics of several valuable Armeniam varieties of tomato

The article presents the researches on the morphological characteristics of seedlings, plants and fruits of several valuable Armenian tomato varieties intended for fresh consumption: Lia, Titan, Orange, intended for processing Marine and chery Zeytun, in the hot conditions of the Ararat Plain. The results of the study showed that the investigated varieties of tomato are distinguished from each other by morphological characteristics of plants, fruits of different size, shape, color, they are adaptive in the case of cultivation in the hot climatic conditions of the Ararat Plain. The results of the study allow to guarantee the cultivation of these new cultivars Titan, Orange, Marine, Zeytun in the farms of the zones with similar conditions.

Effects of melatonin applications on Anatolian black pine (Pinus nigra J. F. Arnold. subsp. pallasiana (Lamb.) Holmboe) afforestation performance in semi-arid areas

Melatonin, a substantial hormone, is a natural antioxidant agent that functions as a protector against the harmful effects of free radicals. Studies have found that “exogenous melatonin” applications have a positive effect on the growth and development of plants. This study investigated the adaptation of the seedlings that were transported from the nursery to the afforestation site for the process of planting. In 2019 the 2+0 aged bare-rooted Kastamonu/Taşköprü Anatolian Black pine seedlings, which are suitable for planting in semi-arid areas, were selected as research materials. Four different doses of “exogenous melatonin” (250, 500, 1000, and 1500 μM) were administered through two different methods (root-dipping and needle-spraying). Morphological seedling characteristics and bioactive chemical variables were measured for the control group and the seedlings treated with different doses of melatonin. Antioxidant enzyme activities were identified. When both the needle-spraying and root-dipping methods for melatonin application were evaluated in terms of morphological and biochemical variables, the best results were determined in low doses (250 to 500 μM). The results suggest that melatonin provides support to the metabolic process for the resistance of seedlings to low temperatures and semi-arid climatic conditions.

Response of stressed seeds of grain crops to changing conditions and duration of their storage

The article investigates the dynamics of the formation of an adaptive response in stressed seeds of spring wheat and barley, depending on the duration and storage conditions. Species differences in seeds on the impact of stress factors of abiotic and biotic nature were studied according to the criteria - morphological characteristics of seedlings, speed, germination energy and laboratory germination of seeds. The leading role of air exchange in blocking the development of stress reactions in seeds has been established. The effect of volatile secretions of saprophytic mold fungi and hyperthermia on the morphometric parameters of initial growth processes in seedlings is shown.

Growth and Quality of Yerba Mate Seedlings Affected by Fertilizer Doses in South Brazil

Given the lack of information on the use of controlled-release fertilizers in yerba mate seedlings production, this study aimed to evaluate growth and morphological characteristics of seedlings produced with two controlled-release fertilizers applied at different doses. We used seeds from a clonal seed orchard, which were sown in a commercial substrate based on peat and vermiculite, with Osmocote® MiniPrill 3M (CRF 3M) and Basacote® Plus 9M (CRF 9M) fertilizers, both in doses of 0, 2, 4, 6, 8, 10, and 12 kg m-3. Seedling height and stem diameter were measured at 60, 90, 120, and 180 days after sowing and, at 180 days, shoot, root, and total biomass, tube withdrawal ease, and root aggregation. From these data, we calculated Dickson's quality index, technical efficiency, Height/Stem diameter ratio, and maximum technical efficiency dose. We verified values statistically superior to control treatment (0 kg m-3) in all variables in response to controlled-release fertilizer 3M and 9M, demonstrating the viability of yerba mate seedling production using controlled-release fertilizers. This is also evidenced through results obtained for growth in height and stem diameter. Although CRF 3M favored seedling growth, CRF 9M showed similar efficiency. The Osmocote® MiniPrill 3M is more efficient than Basacote® Plus 9M in most of the variables analyzed and has a lower input required to obtain quality seedlings. For these reasons, Osmocote® MiniPrill 3M is indicated to produce yerba mate seedlings in the dose 8.50 kg m-3.

Acorn germination and oak (Quercus brantii Lindl.) seedling development dramatically affected by spatial position of maternal trees from Ilam gas refinery, Iran

Air pollution from industrial areas is an environmental stress on trees that can seriously endanger the future of forests. Ancient Persian oak trees (Quercus brantii Lindl.) in the semi-arid forests of the Zagros are exposed to various environmental stresses such as air pollution from the Ilam gas refinery, which causes many challenges in forest regeneration and afforestation, thus jeopardizing forest sustainability or restoration. The aim of this study was to investigate the effect of toxic pollutants emitted from a gas refinery operation on seed germination and morphological characteristics of seedlings from maternal trees that are located at different distances (1000, 1500, 2000, 2500 and 10,000 m) and directions (east and west) from the facility. The results showed that oak seedlings grown from acorns collected at a distance of 10,000 m had the highest values in various seed germination and seedling developmental measures and morphological traits such as leaf and root mass, number and length compared to other distances of 1000, 1500, 2000 and 2500 m from the gas refinery. Highest values in seed germination, and seedling emergence and growth occurred at distances furthest from the refineries. Also, direction from the refinery significantly (p < 0.05) effected root growth, with larger seedlings occurring from acorn collected west of the refinery. The results of principal component analysis and discriminate analysis showed that, of the traits observed, various seed germination traits were most sensitive to gaseous toxic pollutants emitted from this source. Based on all studied traits, seedlings from acorns collected at 10,000 m from the facility were easily distinguished from seedlings of acorns collected at closer distances. It can be concluded that refinery toxic pollutants caused significant adverse changes in germination and seedling growth from acorns collected from oak trees located near (less than 10,000 m) to the source of air pollution. It is recommended that such pollution sources should be established far away from forest areas, and if constructed, be equipped with appropriate technologies such as flare gas recovery (FGR) to reduce emission of toxic pollutants and other emissions such as sulfur dioxide (SO2) and hydrogen sulfide (H2S) from the gas refinery. It is also strongly recommended that acorns collected for restoration measures come from maternal trees growing at a distance >10,000 m, and especially to the west of gas refineries.

Seed germination and morphological characterization of traditional leafy vegetables

Traditional leafy vegetables provide affordable sources of micronutrients to many people in Zimbabwe. They are produced by smallholder farmers with limited knowledge on the agronomic value of high-quality seed and the seed is rarely tested to determine its quality. This study was therefore conducted to evaluate the germination of seeds of three traditional leafy vegetables sourced from five different farmers and the morphological characteristics of the seedlings. The seeds were collected in the growing season of 2015 to 2016, stored at room temperature and tested for germination in the laboratory at regular monthly intervals during storage. Field germination tests were conducted only once. The seeds tested were classified as normal seedlings, abnormal seedlings, fresh non-germinated seeds or dead seeds. Morphological analysis was conducted at seedling stage, including seven qualitative characters and one quantitative character. Mean separation based on the least significance difference at 5% indicated that percentage germination, purity and 1000-seeds weight for all three species significantly differed among sources. The results showed that Cleome gynandra had lowest germination percentages, Amaranthus hybridus was intermediate and Bidens pilosa had highest values throughout the tests. C. gynandra seed exhibited dormancy, showing high levels of fresh non-germinated seed percentage after each test, which is potentially disastrous for the farmers. The combination of pre-chilling, light, potassium nitrate and alternating temperatures as a way of improving germination for C. gynandra needs further validation. Key words: Seed quality, purity, germination, morphological characteristics of seedlings.

Macronutrient uptake, transport and use efficiency in seedlings of Pochota fendleri produced in different substrates and crushed Brazil nut capsules

Seedlings produced in containers can be influenced by the materials used in the substrate, which affects the robustness of the plants and, indirectly, the time required for transplanting and for the plants to become established in the field. The aim of this study was to determine the chemical properties of different materials and on the absorption of macronutrients in Pochota fendleri seedlings (cedro-doce). The treatments were: sand (Sa), soil (So), sand+soil (Sa+So), and sand+soil+crushed Brazil nut capsules (Sa+So+CNC). The growth and macronutrient content were evaluated at 60 days after thinning. The amount of macronutrients in the substrate increased with the addition of crushed Brazil nut capsules. The use of different materials for the substrate, particularly Sa+So+CNC, had a positive influence on the morphological characteristics of seedlings, which ensuring high rates of establishment and survival after outplanting, making commercial reforestation with Pochota fendleri attractive.

Metrodorea flavida (K. Krause) Extracts in Pathogen Control of Senegalia polliphyla (Dc.) Seeds

This study aimed to determine the main pathogens present in Senegalia polliphyla (DC.) seeds and to evaluate the fungicidal potential of Metrodorea flavida (K. Krause) extracts. For this purpose, concentrations of 0.5, 1.0, 1.5 and 2.0% of the extract of Metrodorea flavida leaves were used, in an ethanolic or aqueous form. The experiment was carried out using the Blottertest method to assess the incidence of pathogens in seeds and after application of treatments. Thus, the effect of extracts on the incidence of pathogens and the effects of the extracts on the germination and morphological characteristics of the seedlings was analyzed. The main pathogens found in Senegalia polliphyla seeds were Aspergillus flavus and Fusarium oxysporum. The aqueous and ethanolic extracts reduced the infestation of pathogens associated with Senegalia polliphyla seeds, as well as the main fungus found: Aspergillus flavus Link. It was also found that the extracts did not influence the germination and morphological characteristics of Senegalia polliphyla seedlings in all concentrations evaluated, thus being a promising alternative for pathogen control in forest seeds.

Effects of root undercutting, fertilization and thinning on seedling growth and quality of oriental beech (Fagus orientalis Lipsky) seedlings

In this study, the effects of root undercutting, fertilization and thinning applications on the morphological characteristics of oriental beech seedlings grown in Karadağ Forest Nursery were investigated. In 2+0 years old seedlings, the effects of treatments including by making root undercutting and thinning (A) and by giving 50 g of ammonium nitrate fertilizer per m2 addition to thinning (B) in July were examined. Moreover, quality classes of seedlings were determined on the basis of treatments. According to the result of this study, significant differences were found between the morphological characteristics of the seedlings depending on the treatments. It was determined that while there is a statistical significance in terms of seedling length, sturdiness quotient, the number of side branches, shoot and root fresh weight, shoot and root dry weight, shoot dry weight/root dry weight, root percentage, Dickson quality index, there is no significance in terms of root collar diameter, fresh seedling weight, dry seedling weight in 2+0 years old seedlings. According to Turkish Standards Institute's deciduous seedling standard (TS 5624/21.03.1988) prepared in March 1988, 48.8% of A treatment and 76.7% of B treatment and 78.9% of the control group were found to be Class I. According to Dickson quality index, the quality index values of seedlings in 2+0 A, 2+0 B and control were determined as and 1.05, 0.74 and 0.68 respectively. In determination of Dickson quality index value, using of important parameters used for determination of seedling quality is important in terms of obtaining more accurate results.

Morphological Seedling Characteristics in Mediterranean and Pyramidal Cypresses

1+0 yaşlı çıplak köklü Dallı ve Piramit servi de fidan morfolojisi ve kalitesinin araştırıldığı bu çalışmada, ortalama fidan boyu ve kök boğazı çapı değerleri sırasıyla Dallı servide (Cupressus sempervirens L. var. horizontalis) 84 cm ve 8,7 mm; Piramit servide (Cupressus sempervirens L. var. piramidalis) 78,9 cm ve 8,2 mm bulunmuştur. Fidan boyu ve kök boğazı çapı bakımından Dallı servi Piramit serviye göre daha yüksek performans göstermiştir. Uygulanan varyans analizi sonucunda fidan boyu ve kök boğazı çapı bakımından taksonlar arası anlamlı (p≤0.05) fark ortaya çıkmıştır. Korelasyon analizi sonucunda her iki taksonda da; fidan boyu ile kök boğazı arasındaki istatistiksel bakımdan anlamlı (p≤0.05) pozitif ilişkiler (r=0.299, r=0.255 ve r=0.308) belirlenmiştir. Değerlendirmeler sonucunda her iki taksonda da boy ve çap bakımından fidanların tamamının Türk Standartları Enstitüsü’nün kalite sınıflarına göre kaliteli fidan sınıfında yer aldığı ortaya çıkmıştır. Çalışma kapsamında taksonlara göre oluşturulan yeni kalite sınıflarında; Dallı servi de en yüksek dikime elverişsiz fidanların fidan boyu ve kök boğazı çapının birlikte değerlendirildiği kalite sınıflarında (%36,7 ve %26,7) olduğu belirlenmiştir. Uygulanan ayırma analizi sonucunda bu yeni kalite sınıflarının, %82- %98 arasında değişen oranlarda başarılı olduğu görülmektedir. Piramit servide ise oluşturulan yeni kalite sınıflarına göre, dikime elverişsiz fidanların fidan boyu ve kök boğazı çapının birlikte değerlendirildiği kalite sınıflarında (%42,7 ve %52,7) yer aldığı anlaşılmıştır. Ayırma analizi sonucunda, yeni kalite sınıflarının, %80,0- %96,7 arasında değişen oranlarda başarılı olduğu ortaya çıkmıştır.

Root Growth Potential, Variability and Heritability of Yemane (Gmelina arborea Roxb) in the Philippines

The experiment was undertaken to characterize root growth potential (RGP) and determine growth variability and heritability of eight hundred Yemane (Gmelina arborea Roxb) based on provenance in 3 provinces in the Philippines. Significant variations of morphological characteristics of seedlings of Yemane by seed sources were found in the study. Seed sources from Quezon and Cotabato Provinces differed in all morphological traits compared with the seed sources from Davao del Sur. The root growth potential in terms of the number of first order lateral roots (FOLR) was positively correlated with all seedlings morphological characters, such as root collar diameter, primary root length, stem height, and root:shoot ratio. The frequency distribution of FOLR revealed to be normal. The seedlings FOLR was fro m 3 to 35 with an average of 18. Three natural FOLR groupings were established such as: R1 (0–10); R2 (11– 20); and R3 (21–30+). The entire traits measured were genetically influenced by the seed sources based on observed high heritability estimates.

Характеристика морфологічних ознак вегетативних органів дерев зникаючих сортів яблуні у Закарпатській області

На Закарпатті є всі умови для розвитку органічного садівництва. Для його впровадження можна використовувати місцеві сорти, які мають стійкість проти основних хвороб і адаптовані до місцевих ґрунтово-кліматичних умов. Аборигенні сорти зникають і замінюються новими, популярними сортами. Потрібно зберегти генофонд цих сортів для використання у селекції та, можливо, у технологіях органічного виробництва продукції. За вирощування сортів у плодорозсадниках необхідно добре вивчити сортові анатомо-морфологічні особливості саджанців, що дозволяє відрізнити їх між собою у разі відсутності плодів. Це і було метою наших досліджень. Виділені кращі сорти із високими продуктивними показниками без застосування пестицидного навантаження (Полованя, Краса Закарпаття, Соліварське, Батул, Дурнайка, Штетінське червоне маслянисте, Феркованя). Всі ці сорти є стійкими до основних хвороб, зокрема до парші та частково до борошнистої роси і раку. Морфологічні ознаки дерев описано відповідно до методики опису сортів. Протягом 2015-2018 років проведено літнє щеплення (окуліровка) та весняне щеплення живцем на підщепи: М.9, ММ.106, сіянці яблуні. Проведено оцінку сили росту саджанців на цих підщепах. Встановлено, що більшість з них: Дурнайка, Соліварське, Полованя, Феркованя володіють великою силою росту; Краса Закарпаття та Штетінське червоне — помірною; Батул — слабкою. Ці сорти мають перспективу використання в інтенсивних органічних садах за вирощування їх на відповідних підщепах. Всі сорти мають добру сумісність і приживлюваність з підщепами М.9 та ММ.106, які найчастіше використовуються в промислових насадженнях в Україні

Winter and summer annual biotypes of camelina have different morphology and seed characteristics

Camelina [Camelina sativa (L.) Crantz] has two distinctive biotypes, summer and winter, with winter biotypes requiring a vernalization treatment to enter the reproductive phase. Increased interest in broadening the diversity of winter-hardy cover crops in the northern Great Plains of the U.S. to reduce soil erosion through the winter months has led seed companies to offer winter camelina seed outsourced from other states. Regrettably, in 2017, outsourced camelina seed from other states turned out to be summer biotypes that did not survive the North Dakota winter. The objectives of this study were to determine the morphological characteristics of seed and seedlings from summer- and winter-biotypes. Morphological characteristics of seedlings were determined by growing nineteen summer- and eleven winter-biotypes in an environmental chamber. The experimental design was a randomized complete block design with three replicates. To determine differences in seed wavelength absorbance between winter- and summer-biotypes both visible and near infrared spectra were examined, which encompass 400–2498 nm wavelengths. Mixtures of cultivars Joelle (winter) and one summer type were analyzed using near infrared spectroscopy (NIRS). Seed mixtures were prepared in increments of 5% of ‘Joelle’. Mixtures of different lots of Joelle were prepared in increments of 25%. Significant interactions were present and observed for pairs of vegetative leaves, growth stage, height, leaf length, leaf width and the number of lobes. The equation for the ratio of winter seed (r2 = 0.96) performed very well, being able to distinguish known field grown cultivars used in the equation. Differences in seed and seedling morphological characteristics can be used to differentiate winter- or summer-biotypes. Having a rapid method to determine the percentage of winter camelina in an unknown seed sample will be very favorable for all producers, as well as seed companies, interested in growing winter camelina as either a winter-hardy cover crop or as a winter annual cash crop.

The effects of growing density and fertilization on morphological seedling characteristics of crimean juniper (Juniperus excelsa Bieb.)

In this study, the effects of growing density and fertilization on the morphological characteristics of the Crimean Juniper (Juniperus excelsa Bieb.) seedlings were investigated. For this purpose, four different growing densities [150, 250, 350 and 600 (= control) seedlings per square meter] and three different fertilizer doses [0 g N (= control), 10 g N and 20 g N per square meter] were studied. In this context, the effects of the treatments on the height (SH), root collar diameter (RCD), number of sub branches (NSB), the longest lateral root length (LRL) and shoot:root ratio (S:R) of the seedlings, which are among the important morphological characteristics, were examined. The data were evaluated in SPSS software. Results showed that the main factor affecting the root collar diameter of the seedlings was growing density. Similarly, it was found that the main factor working on the seedling height was fertilization dose. As a conclusion; it was suggested that cultivation of barerooted Crimean Juniper seedlings in the Eğirdir Forestry Nursery should be carried out with 150-350 seedlings per square meter and 10 g/m2 N application.

ВЛИЯНИЕ ПРЕДПОСЕВНОЙ ОБРАБОТКИ СЕМЯН ОЗИМОЙ ТРИТИКАЛЕ НА ОСОБЕННОСТИ ИХ ПРОРАСТАНИЯ

The article presents the study results of reaction of winter triticale of Izhevskaya 2 and Zimogor for pre-sowing seed treatment with Vial TT, Agree`s Forsage, Mivgal-Agro, Emiks and its combination. It was established that presowing seed treatment affected the degree of development and morphological characteristics of seedlings. Preparations Agree`s Forsage, Mival-Agro and Mival-Agro in conjunction with Vial TT provided the stimulation of the seeds germination process of Izhevskaya 2 variety and, conversely, contributed to the inhibition of these processes in the Zimogor variety.

English

Conilon coffee is a highly heterozygous diploid plant that is also allogamous, producing seeds through cross-fertilisation. Due to their allogamy, plants of seminiferous origin are highly heterogeneous, exhibiting high morphological and genetic diversity. However, propagation through cutting guarantees the maximum homogeneity of fields, particularly in grain maturation, among other desirable characteristics. Currently, the majority of commercial Conilon coffee is planted using seedlings propagated by cuttings. Studying the juvenile behaviour of different clonal genotypes of the Conilon coffee plant represents an important tool to assist with the establishment of this crop. The objective of this study was to assess the growth, development and genetic diversit y in several promising genotypes of the Conilon coffee plant based on the morphological characteristics of seedlings propagated by cutting. We used seedlings Conilon coffee of 33 genotypes selected by coffee growers, and with great productive potential, and genotype 02 of the Emcapa 8111 variety. Based on morphological characteristics linked to the growth and development of the aboveground and root systems of the genotypes, their phenotypic correlations were estimated, along with the genetic diversity among genotypes, using Tocher’s optimisation method and the unweighted peer group method with arithmetic mean. Genotypes A1, P2, Z39, Ouro Negro, Tardio C, Cheique, and Z29 exhibited a higher Dickson quality index (between 0.40 and 0.56). Genetic variability exists among the seedlings of the 34 genotypes of Conilon coffee studied. The most dissimilar genotypes were CHR, 18, and Z39, which remained in isolated groups in all experiments.

KARAKTER MORFOLOGI HIBRID ACACIA (A. mangium x A. auriculiformis) DI PERSEMAIAN

The superiority of Acacia hybrid (A. mangium x A. auriculiformis) compared to the parent trees as fast growth, straight bole, ligth branching, more tolerance to pest and desease and had better wood properties. In order to maintain the superiority, it should be propagated vegetatively. However, the propagation potential of Acacia spp usually decreased by increasing the age of plant (aging effect). To prevent the aging effect on Acacia hybrid, vegetative propagation of selected trees should be done before becoming too old. This study was aimed to observe morphological seedling characteristics of Acacia hybrid. The result showed that morphological seedling characteristics of Acacia hybrid were intermediate between the parents species. The development of leaves pattern was well-marked by absence of 4-pinnates leaves or number of pinnates leaves was between 4-6. In addition, the pubescence was present on the margin of pinnates and the number of main vein on phyllode were mostly 3.

Diferentes Substratos para a Produção de Mudas de Sesbania virgata

The native seedlings production aims to attend plantings, mainly for environmental purposes, such as the recovery of degraded areas. To enhance the knowledge about species with potential for recovery of degraded areas, this study aimed to evaluate the use of different substrates on the growth of seedlings of Sesbania virgata (Cav.) Pers. The treatments were formulated using sewage sludge, coconut fiber, vermiculite and rice husk in natura, besides the commercial substrate. The seedlings were grown in plastic tubes with a capacity of 120 cm3. The study consisted of fourteen treatments, with five replicates of five seedlings each, in a total of 25 plants per treatment. After 150 days of sowing, the following characteristics were evaluated in seedling: height, stem base diameter, the relation between height and the stem base diameter, shoot dry matter, root dry matter, total dry matter, the relation between the shoot dry matter and root dry matter and Dickson quality index. The treatments containing sewage sludge and vermiculite in its composition, particularly the treatment T6 (60% sewage sludge + 40% vermiculite), provided the best growth of morphological characteristics of seedlings of Sesbania virgata.

CARACTERIZAÇÃO MORFOLÓGICA DAS PLÂNTULAS DE CINCO ESPÉCIES ARBÓREAS DA FLORESTA ESTACIONAL SEMIDECIDUAL, BRASIL

As espécies arbóreas Astronium graveolens (Anacardiaceae), Cedrela fissilis (Meliaceae), Gallesia integrifolia (Phytolaccaceae), Parapiptadenia rigida (Fabaceae) e Tabebuia avellanedae (Bignoniaceae) ocorrem em remanescentes da Floresta Estacional Semidecidual do norte e noroeste paranaense e interior do estado de São Paulo. As plântulas dessas espécies foram descritas morfologicamente com o objetivo de subsidiar sua identificação em campo. As plântulas analisadas mostraram-se distintas desde suas folhas cotiledonares até os eófilos e metáfilos, podendo ser localizadas facilmente na comunidade vegetal. As folhas das cinco espécies são pecioladas e apenas C. fissilis e T. avellanedae apresentaram eófilos. Cedrela fissilis apresenta eófilos do tipo composto, trifoliado, com margem íntegra, e T. avellanedae, eófilos do tipo simples com margem serreada. As plântulas de G. integrifolia possuem metáfilos simples, e as de C. fissilis, T. avellanedae e A. graveolens têm metáfilos compostos, enquanto que nas plântulas de P. rigida os metáfilos são recompostos. Como as plântulas são visualmente distintas, a identificação em campo torna-se possível.