Callus formation from cotyledon protoplasts of Pinus oocarpa and Pinus patula

1988 ◽  
Vol 72 (2) ◽  
pp. 374-378 ◽  
Author(s):  
E. Laine ◽  
H. David ◽  
A. David
Keyword(s):  
Callus Formation ◽  
Pinus Patula ◽  
Pinus Oocarpa

Lophodermium himalayense. [Descriptions of Fungi and Bacteria].

1993 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
Pinus Taeda ◽  
Geographical Distribution ◽  
Tamil Nadu ◽  
Pinus Densiflora ◽  
Uttar Pradesh ◽  
Pinus Patula ◽  
Pinus Roxburghii ◽  
Pinus Kesiya ◽  
Pinus Oocarpa ◽  
North Bengal

Abstract A description is provided for Lophodermium himalayense. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pinus densiflora, Pinus greggii, Pinus insularis, Pinus kesiya, Pinus longifolia, Pinus oocarpa, Pinus patula, Pinus roxburghii, Pinus taeda, Pinus wallichiana, Pinus sp. DISEASES: Needle cast of pines. Although the biology of this species is not known, it is included here for reference, as other members of the genus, and in particular Lophodermium seditiosum Minter, Staley & Millar (Description Sheet 568), are important pathogens of pines. GEOGRAPHICAL DISTRIBUTION: India (Assam, Maharashtra, Meghalaya, North Bengal, Tamil Nadu, Uttar Pradesh), Sri Lanka. TRANSMISSION: By airborne ascospores in wet or humid conditions.

scholarly journals Extracción de compuestos fenólicos y contenido de catequina en cortezas de tres especies forestales del Cauca-Colombia

2021 ◽  
Vol 15 (29) ◽  
pp. 19-27
Author(s):  
Rodrigo Andrés Sarria Villa ◽  
José Antonio Gallo Corredor ◽  
Ricardo Benítez Benítez
Keyword(s):  
Pinus Patula ◽  
Pinus Oocarpa

Se evaluó el contenido de catequina en cortezas de las especies forestales Pinus patula, Pinus oocarpa y Eucaliptus grandis, cultivadas en el Departamento del Cauca-Colombia. Los extractos etanólicos se obtuvieron evaluando las mejores condiciones de tamaño de partícula, tiempo de agitación, relación disolvente-corteza, temperatura y agitación. El contenido de catequina se determinó usando cromatografía líquida de alta resolución (HPLC) con detector ultravioleta y empleando extracción en fase sólida (SPE) para la limpieza de las muestras. Se encontró un contenido de catequina de 2.00±0.03%, 2.96±0.02% y 0.18±0.03% en cortezas de P. patula, P. oocarpa y E. grandis respectivamente. Este contenido de catequina indica el gran potencial en aplicaciones industriales y medicinales para un recurso renovable como la corteza, abundante en la región y cuya disposición en campo afecta ambientalmente las zonas forestales.

scholarly journals Aprovechamiento integral de residuos lignocelulósicos

2019 ◽  
Vol 11 (1) ◽  
pp. 41º-49
Author(s):  
J. A. Gallo-Corredor ◽  
R. A. Sarria-Villa
Keyword(s):  
Pinus Patula ◽  
Pinus Oocarpa

Las especies Pinus patula y Pinus oocarpa entre otros son unas de las coníferas más cultivadas en el departamento del Cauca, su follaje contiene cierta cantidad de aceites esenciales, los cuales son usados en la industria cosmética y farmacéutica principalmente. La corteza de estas especies maderables es rica en compuestos polifenólicos, empleados en la fabricación de colorantes, resinas y compuestos con actividad antioxidante. Muchas de estas especies forestales son ricas en resinas naturales a partir de las cuales se pueden obtener resinas con aplicaciones industriales y líquidos con características aromáticas. Igualmente, el aserrín que se genera en su procesamiento puede ser empleado para producir biocombustibles y material combustible.

scholarly journals Site Specific Stem Volume Models for Pinus patula and Pinus oocarpa

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Herbert Malata ◽  
Elisha S. Ngulube ◽  
Edward Missanjo
Keyword(s):  
Stem Volume ◽  
Accurate Estimation ◽  
Pinus Patula ◽  
Volume Data ◽  
Site Specific ◽  
Pinus Oocarpa ◽  
Relative Errors ◽  
Total Tree ◽  
Volume Models ◽  
Modelling Approach

Sustainable management of timber forests requires availability and adequacy of models for accurate estimation of tree volumes. This study was conducted to develop site specific models for estimating individual total tree stem volume of Pinus patula and Pinus oocarpa at Chongoni Timber Plantation in Central Malawi. A total of 32 trees from Pinus patula compartment and 48 trees from Pinus oocarpa compartment were destructively sampled. Various predictors including diameter at breast height (dbh) and height (ht) were run against total stem volume using a nonlinear mixed-effects modelling approach. The results indicate that the developed site specific models showed a significant association between total stem volume and the predictors (dbh and ht). The developed volume models accounted for at least 99% of the total variation in the total stem volume data. This suggests that application of the developed site specific models is highly recommended when accurate results are required. The appropriateness of the developed models was also supported by the fact that the total relative errors (TRE) of these models were lower (range: −0.04% to 0.06%) than the TRE of some previously developed models (range: −12.40% to 41.70%) tested on the present data.

scholarly journals Characterization and determination of the quality of rosins and turpentines extracted from Pinus oocarpa and Pinus patula resin

Heliyon ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. e07834
Author(s):  
Rodrigo A. Sarria-Villa ◽  
José A. Gallo-Corredor ◽  
Ricardo Benítez-Benítez
Keyword(s):  
Pinus Patula ◽  
Pinus Oocarpa

Hyperplastic Callus Formation in Osteogenesis Imperfecta

1994 ◽  
Vol 35 (5) ◽  
pp. 426-428
Author(s):  
A. -J. Burchardt ◽  
AA. Wagner ◽  
P. Basse
Keyword(s):  
Osteogenesis Imperfecta ◽  
Callus Formation ◽  
Hyperplastic Callus Formation ◽  
Hyperplastic Callus

FACTORS AFFECTING THE REGENERATION OF PEPPER (CAPSICUM ANNUUM L.)

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1120G-1120
Author(s):  
J. L. Jacobs ◽  
C. T. Stephens
Keyword(s):  
Growth Hormone ◽  
Silver Nitrate ◽  
Callus Formation ◽  
Leaf Explants ◽  
Regeneration System ◽  
Factors Affecting ◽  
Nitrate Concentrations ◽  
Leaf Differentiation ◽  
Whole Plants

Several growth hormone combinations and silver nitrate concentrations were examined for their effect on regeneration of different pepper genotypes. Primary leaf explants from in vitro seedlings were cultured on a revised Murashige and Skoog medium supplemented with auxin, cytokinin and 1.6% glucose. Combinations of different concentrations of indole-3-acetic acid (IAA), 0-5 mg/l, and 6-benzylaminopurine (BAP), 0-5 mg/l, were tested to determine the most effective medium for shoot primordium formation. Experiments with IAA and BAP did not result in a specific growth hormone combination appropriate for regeneration of all genotypes tested. Of the silver nitrate concentrations tested, 10 mg/l resulted in the best shoot and leaf differentiation and reduced callus formation. Differences in organogenic response of individual genotypes were evaluated on a single regeneration medium. Whole plants were regenerated from 11 of 63 genotypes examined. Based on these experiments, a reproducible regeneration system for pepper was developed with a total of 500 plants regenerated to date.

Utilization of Different Seedling Explants for in Vitro Propagation of Hibiscus syriacus

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 478e-479
Author(s):  
M.M. Jenderek ◽  
A.J. Olney
Keyword(s):  
Callus Formation ◽  
Adventitious Bud ◽  
Root Explants ◽  
Petiole Explants ◽  
Bud Formation ◽  
Hypocotyl Explants ◽  
Leaf Petiole ◽  
Adventitious Bud Formation ◽  
Hibiscus Syriacus

Hibiscus syriacus is a difficult species in micropropagation due to its endogenous contamination and recalcitrant shoot formation; therefore, studies on using explants other than shoot tip or axillary buds of growing shrubs were initiated. Three different seedling fragments (root, hypocotyl, and leaf petiole) from aseptically germinated seedlings of hibiscus (var. Aphrodite) were evaluated for adventitious bud formation, shoot and leaf development. The explants were cultured on McCown's woody plant basal salt medium supplemented with KNO3 (800 mg/L), adenine sulfate (80 mg/L) and MS vitamins containing BA or 2iP or TDZ at 0.5, 1.0, 2.2, 4.4 and 10 mM. Adventitious buds were present on all of the three different explants grown on medium containing TDZ; however, the most abundant bud formation, with many small leaves originating from callus was observed on hypocotyl explants cultured on medium with 1 mM of TDZ. Petiole explants were the most frequent to develop short shoots (≈15 mm) and one to nine leaves without callus formation, where 70% of hypocotyl and the root explants formed leaves originating from callus. Callus was induced on all explant types regardless of the level or type of cytokinin used. However, the number of shoots produced by any explant type was low, petioles cultured on 0.5 and 1mM of TDZ were the most suitable material for non-callus shoot development in H. syriacus. Hypocotyl explants proved to be an excellent source for adventitious bud formation but their ability to develop shoots needs to be investigated.

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