Layering in Seedling Production of Rambutan
Renata Aparecida de Andrade,
Samir Paulo Jasper,
Amanda Garcia Bagatim,
Guilherme Nacata
Issue:
Volume 1, Issue 5, November 2013
Pages:
50-53
Received:
17 October 2013
Published:
10 November 2013
Abstract: The rambutan fruit is a culture that still little known, but with high potential of market, such as lychee, fruit of the same family. The orchards have been installed using seedlings originated from seeds, generating high variability among the plants and produced fruits. As the layering has been shown effective to obtaining the litchi seedlings, this research was realized, in order to verify the response of rambutan propagation by layering in the different seasons of the year (spring, summer, autumn and winter). The branches were selected from the middle of the canopy of the trees in production, and about 50 cm from the top was done the girdling, which was wrapped with sphagnum and transparent plastic. For each season, were done 12 air layering in 5 plants, totaling 60 air layering. The evaluation, realized 110 days after layering, as about: percentage of air layering root, callus, and survival of the layers while in the matrix plant. From the results, can be conclude that is possible to produce seedlings of rambutan culture by layering, indicating that be done in the spring.
Abstract: The rambutan fruit is a culture that still little known, but with high potential of market, such as lychee, fruit of the same family. The orchards have been installed using seedlings originated from seeds, generating high variability among the plants and produced fruits. As the layering has been shown effective to obtaining the litchi seedlings, th...
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A Review on Structures of Secondary Wall in Reaction Wood Fiber of Hardwood Species
Rubaiyat Sharmin Sultana,
Md. Mahabubur Rahman
Issue:
Volume 1, Issue 5, November 2013
Pages:
54-59
Received:
23 September 2013
Published:
20 November 2013
Abstract: Due to a non-vertical orientation of the stem or branch, which may begin as responses of prevailing winds, snow, slope, or asymmetric crown shape, a specialized wood tissue forms, is called “reaction wood”. In hardwood species, the reaction wood tends to form on the upper side of a leaning stem or branch, is known to as “tension wood”. It is usually related with eccentric growth and changes in structure and chemistry of wood. During the formation of tension wood many changes found in wood cells, especially in wood fibers. The changes of wood properties in tension portion result different shrinkage characteristics during drying, creates a serious problem at adjacent portion of normal wood. However, tension wood is problematic in the hardwood industries and this wood is economically less valued. However, the studies on tension wood are necessary for beneficial applications in the wood industries sectors as well as research sectors. The knowledge on tension wood anatomy is still a matter for tree growers and timber processors, especially who are often involved in the furniture making. Besides, the understanding of tension wood formation provides a unique opportunity to obtain information on the molecular and biochemical mechanisms in the expression patterns of genes/proteins. The studies on reaction wood anatomy are not enough that we concluded any model. This review describes the features of fibers in tension wood todate, including secondary wall layers structure. Until date, six types structure of secondary cell wall layers for tension wood fibers such as, S1 + S2 + S3 + G, S1 + S2 + G, S1 + G, S1 + Ǵ, S1 + S2, and S1 + S2 + S3 have been reported, which considered being involved in plant evolution.
Abstract: Due to a non-vertical orientation of the stem or branch, which may begin as responses of prevailing winds, snow, slope, or asymmetric crown shape, a specialized wood tissue forms, is called “reaction wood”. In hardwood species, the reaction wood tends to form on the upper side of a leaning stem or branch, is known to as “tension wood”. It is usuall...
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High Frequency of Multiple Shoots Induction in Paederia Foetida (L.)- A Rare Medicinal Plant
M. Thirupathi,
D. Srinivas,
K. Jaganmohan Reddy
Issue:
Volume 1, Issue 5, November 2013
Pages:
60-65
Received:
11 November 2013
Published:
30 December 2013
Abstract: Plants have been the eternal source of food and medicine since antiquity in all traditions and cultures. The medicinal plants are considered as one of the most vital components of ecosystem and biodiversity. Tissue culture techniques are usually used for the propagation as well as conservation of medicinal plants. In vitro multiplication of shoot induction and other tissue culture studies is hither unknown in this species. In this study, experiments were designed to develop regeneration protocols for the propagation as well as conservation of a rare medicinal plant, Paederia foetida (L.) The high frequency of multiple shoots was recorded from direct organogenesis of nodal explant. MS medium supplemented with benzyl adenine (4.4µM), kinetin (4.6µM), and 3% sucrose promoted the maximum number of shoots as well as beneficial shoot length. The direct organogenesis in TDZ (2.2µM) containing medium gave maximum percentage of shoots in MS medium from nodal segments compared with that of the other growth regulators. These plants grew normally without showing any morphological variations from the mother plant.
Abstract: Plants have been the eternal source of food and medicine since antiquity in all traditions and cultures. The medicinal plants are considered as one of the most vital components of ecosystem and biodiversity. Tissue culture techniques are usually used for the propagation as well as conservation of medicinal plants. In vitro multiplication of shoot i...
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