Seasonal Activity of the Vascular Cambium in Gmelina Arborea Roxb.

Dave, Yash; Rao, K. S.

doi:10.1163/22941932-90000750

Cited by 27 publications

(20 citation statements)

References 11 publications

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“…Rao and Dave (1985), and Dove and Rao (1982) have studied the causes of the wide variation in size, shape, and arrangement of the fusiform cells in the vascular cambium and primary/secondary xylem of G. arborea. Vascular cambium activity in primary xylem was intense; the fusiform initials were long, radially flattened and tangentially tapering with overlapping ends.…”

Section: Discussionmentioning

confidence: 99%

Fiber morphology in fast growth Gmelina arborea plantations

Moya

Amador

2016

MYB

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Gmelina arborea is planted in large areas of forest with the objective of producing solid wood using well known silvicultural techniques and taking advantage of the properties of the wood quality of fast-growing tree species managed in short rotation systems. The aim of this study was to analyze the morphology and dimension of fibers from the pith to the bark in trees from fast growth plantations in northern Costa Rica.The results indicate that fiber morphology is irregular in both diameter and shape; with 1 to 4 septa, abundant crystals deposited in fiber lumina and minutely bordered pits with oblique and nonvestured apertures. Fiber length, width and cell wall thickness increased with tree age in the early stages. Lumen diameter was not correlated with tree age. KEY WORDS:Fiber width, lumen diameter, cell wall thickness, fiber length. RESUMENGmelina arborea se planta en grandes áreas de bosques con el objetivo de producir madera sólida mediante el uso de técnicas silvícolas bien conocidas, así como para aprovechar las ventajas de las propiedades de la calidad de la madera de especies arbóreas de rápido crecimiento y manejadas por sistemas de rotación corta. El objetivo de este estudio fue analizar la morfología y dimensión de las fibras, desde la médula hasta la corteza, en los árboles de rápido crecimiento de las plantaciones del norte de Costa Rica. Los resultados indican que la morfología de la fibra es irregular, tanto en diámetro como en forma; con 1 a 4 septa, cristales abundantes que se depositan en los lúmenes de la fibra y con hendiduras minuciosamente bordeadas con orificios no cubiertos y oblicuos. La longitud y ancho de la fibra y el grosor de la pared celular se incrementaron con la edad del árbol en las etapas tempranas. El diámetro del lumen no se correlacionó con la edad del árbol.PALABRAS CLAVE: Anchura de la fibra, diámetro del lumen, grosor de la pared celular, longitud de la fibra.

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Section: Discussionmentioning

confidence: 99%

Fiber morphology in fast growth Gmelina arborea plantations

Moya

Amador

2016

MYB

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“…Similarly in mediterranean climate dry and warmer summer inhibits the growth leading to cambial rest [16,18,20]. However, in tropical trees the period of activity is relatively longer, where the radial growth continues either throughout the year [9,10] or for the major part of the year [7,9,11,29]. In Azadirachta cambial growth occurs for the major part of the year in MDF and DDF whereas in SF it occurs throughout the year.…”

Section: Discussionmentioning

confidence: 99%

“…But in many tropical species cambium remains active for the major part [9,11,27] or throughout the year [8,10].…”

Section: Discussionmentioning

confidence: 99%

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Relationship between seasonal cambial activity, development of xylem and phenology in Azadirachta indica growing in different forests of Gujarat State

Rao

Rajput

2001

Ann. For. Sci.

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-Seasonal cycle of cambial activity was compared among the trees of Azadirachta indica growing in Moist Deciduous (MDF), Dry Deciduous (DDF) and Scrub land Forest (SF) of Gujarat State. Radial growth occurred in two growth flushes in MDF and DDF. Cambial cell divisions in MDF started in February and June resulting maximal radial growth in August-September when the rains were heavy and ceased in January and May during the drier part of the year. In DDF the first flush of growth commenced in January with maximal xylem development in April and ceased in May. The second flush of cambial activity began in June with the arrival of rains, reached peak in October and ceased in December. Cambium was active throughout the year in SF and attained its peak activity thrice i.e. in February, July and October. With complete maturation of leaves in November, the cell divisions were rather slow in MDF and SF whereas no divisions were encountered in DDF. Cambial rays exhibited large intercellular spaces during drier months in all the three forests. Seasonal behavior of vascular cambium was discussed in relation to phenology and local climatic conditions. Azadirachta / intercellular spaces / vascular cambium / xylem Résumé -Relation entre l'activité saisonnière du cambium, la croissance radiale du xylème et la phénologie chez Azadirachta indica dans différents types d'écosystèmes forestiers de l'état du Gujarat. Les cycles saisonniers de l'activité cambiale chez Azadirachta indica dans différents types d'écosystèmes forestiers de l'état de Gujarat ont été comparés entre des arbres provenant de forêts humide décidue (MDF), sèche décidue (DDF) et de savane arborée (SF). La division des cellules cambiales commence en février et juin pour les MDF, ce qui se traduit par une croissance radiale maximale en août-septembre, au moment des fortes pluies, et un arrêt en janvier et mai pendant les périodes les plus sèches de l'année. Dans les DDF, le premier démarrage de croissance radiale commence en janvier, avec un maximum en avril et un arrêt en mai. Une seconde période d'activité commence en juin avec l'arrivée des pluies, atteint son maximum en octobre et s'arrête en décembre. Dans les SF le cambium reste actif toute l'année avec trois pics d'activité en février, juillet et octobre. Lorsque les feuilles arrivent à maturité complète en novembre, la vitesse de division cellulaire du cambium est relativement faible dans les MDF et le SF et nulle dans les DDF. Dans le cambium, les rayons présentent des espaces intercellulaires importants pendant les mois secs pour les trois types de forêts. Le fonctionnement saisonnier du cambium est ensuite discuté en relation avec la phéno-logie et les conditions climatiques locales.Aazadirachta / activité cambiale / climat / phénologie / xylème Ann. For. Sci. 58 (2001) [691][692][693][694][695][696][697][698] 691

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“…The cambium activity and cell differentiation provide not only information about the age of trees (Callado et al, 2003;Worbes et al, 2003), but also clues about the possible factors controlling tree growth, the yield and quality of wood (Dave & Rao, 1982;Ohashi et al, 2001;Venugopal & Liangkuwang, 2007;Fonti et al, 2010;Krepkowski et al, 2011;Gričar & Jagodic, 2014), which are helpful in knowing wood formation, predicting timber and biomass yield, and in determining forest dynamics. In recent years, a series of studies have dealt with the seasonal cambial activity and wood formation in various tree species.…”

Section: Introductionmentioning

confidence: 99%

Seasonal dynamics in cambial activity and the formation of xylem and phloem in the branches of Cinnamomum camphora

Dong¹,

Xu²,

Lin³

et al. 2016

Dendrobiology

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Abstract:The cambial activity and periodicity of secondary xylem and phloem formation have been less studied in tropical tree species than in temperate ones. Cambium activity is the only source of timber production. Studies on its activity and xylem formation can provide helpful data for dendrochronology and possible factors that control tree growth, the yield and quality of wood. Cinnamomum camphora is an important fast-growing tree for furniture and sculpture wood in South China.

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Seasonal Activity of the Vascular Cambium in Gmelina Arborea Roxb.

Cited by 27 publications

References 11 publications

Fiber morphology in fast growth Gmelina arborea plantations

Fiber morphology in fast growth Gmelina arborea plantations

Relationship between seasonal cambial activity, development of xylem and phenology in Azadirachta indica growing in different forests of Gujarat State

Seasonal dynamics in cambial activity and the formation of xylem and phloem in the branches of Cinnamomum camphora

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