Field Growth and Rubber Yield of Hevea Brasiliensis (Muëll.-Arg.) From Budded Versus in Vitro Micropropagated Plants From Clone Irca 18

Carron, Marc-Philippe; Lardet, Ludovic; Leconte, Antoine; Boko, C.; Dea, B. G.; Kéli, J.

doi:10.17660/actahortic.2003.616.40

Cited by 7 publications

(8 citation statements)

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“…A muda clonal obtida pelo método da estaquia proporciona o desenvolvimento de um sistema radicular próprio e uma arquitetura semelhante a qualquer outro tipo de muda, fato também já observado e relatado por Carron et al (2000) e Carron et al (2001). Assim sendo, o clone propagado certamente terá maiores condições para expressar o seu real potencial genético, em qualquer ambiente de cultivo.…”

Section: Resultsunclassified

Produção De Mudas De Seringueira Por Meio Do Enraizamento De Estacas Coletadas De Plantas Adultas

Monteiro¹,

Marques²,

Pacheco³

2015

Agrotropica

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A propagação vegetativa da seringueira em escala comercial, através do enraizamento de estacas, é uma alternativa viável para a multiplicação de clones melhorados e recomendados para o cultivo comercial. A presente investigação teve como objetivo avaliar a possibilidade de produção de mudas clonais através do enraizamento de brotações (estacas) obtidas diretamente de seringueiras adultas, assim como o efeito de reguladores de crescimento no enraizamento das estacas. Trata-se de uma técnica alternativa para a produção de mudas clonais de forma mais rápida, econômica e que permite contornar os efeitos negativos das mudas enxertadas devido às interações entre o enxerto (clone) e o portaenxerto (cavalo). A coleta de hastes foi realizada em vários estádios de desenvolvimento e após o período de reenfolhamento das seringueiras no cultivo comercial. As estacas foram devidamente preparadas e a sua base tratada com indutores de enraizamento, ou seja, com soluções de ácido indolbutírico (AIB) e de ácido naftaleno acético (ANA), nas concentrações de 5.000 e 1.000 mg dm -3 , respectivamente. Os resultados obtidos, ainda que preliminares, foram bastante promissores, pois as estacas tratadas apresentaram primórdios de raízes logo aos 15 dias e o enraizamento se definiu aos 45 dias, em toda a seção da base das estacas. A muda de estaquia mostrou-se superior em relação a muda enxertada por borbulhia, considerando o crescimento da parte aérea (respectivamente 1,46 m contra 0,90 m de altura), obtido em mudas com um ano de idade, e ao volume e características do sistema radicular. Palavras-chave:Hevea, método de propagação, estaquia, indução de raízes.Production of rubber tree seedlings through the rooting of cuttings collected from adult plants. Vegetative propagation of rubber tree on a commercial scale by rooting cuttings is a viable alternative to the multiplication of improved and recommended clones for planting. This research aimed to evaluate the possibility of production of clonal seedlings through the rooting of shoots obtained directly from adult rubber trees, as well as growth regulators effect on rooting. This is an alternative technique for production of clonal seedlings more quickly, economically, avoiding the negative effects due to interactions between the graft (clone) and the rootstock. The rubber tree shoots were collected in the commercial planting, regarding various stages of development and after the defoliation period. The cuttings were properly prepared and their base treated with root inducers, such as the solutions of 3-Indolebutyric acid (IBA) and 1-naphthalene acetic acid (NAA), at concentrations of 5000 and 1000 ppm, respectively. The results, although preliminary, are very encouraging because the treated shoots begun to present the root primordios as early as 15 days and it was completely defined at 45 days across the whole section of the base of the stems. The rooted cutting seedlings was superior the seedlings derived by budding with respect to the plant size (1.46 m to 0.90 m) measured at one year ...

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Section: Resultsunclassified

Produção De Mudas De Seringueira Por Meio Do Enraizamento De Estacas Coletadas De Plantas Adultas

Monteiro¹,

Marques²,

Pacheco³

2015

Agrotropica

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“…In contrast, buds from the crowns of mature trees directly reached their mature stage without passing through the juvenile stage (Dijkman 1951). Subsequently, the researchers from China and France not only confirmed the finding by the Dutch researchers, but also showed that the juvenile plantings derived from somatic embryos of mature plants or juvenile scion from the stems of young seedlings demonstrated better performance in rubber yield, the trunk girth and the laticifer number than those of mature plantings (Liu et al 1985, Chen et al 1998, Yuan et al 1998, Carron et al 2001. Consequently, it became clear that the multiplication by grafting concealed the true production capability of selected H. brasiliensis clones due to the Ôphysiological ageingÕ of the buds used for grafting.…”

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confidence: 75%

Micropropagation of self‐rooting juvenile clones by secondary somatic embryogenesis in Hevea brasiliensis

2010

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Micropropagation of self-rooting juvenile clones in Hevea brasiliensis was established for two clones CATAS 7-33-97 and CATAS 88-13 through the following three steps: induction of primary embryos, embryo multiplication by secondary somatic embryogenesis in three successive cycles from a single culture of primary embryo and plant regeneration. The embryo multiplication coefficients of the two clones increased in the first cycle and reached the maximum in the second and the third cycle at the same rate. Significant effects of origins of embryo fragments and calcium on secondary embryogenesis were detected, the highest ratios of the regenerated embryos to primary embryos appeared, when embryo fragments close to the base of embryos were used and incubated in Murashige and Skoog (MS)-based callogenesis medium with 6.0 mM CaCl 2 for CATAS 88-13 and 9.0 mM CaCl 2 for CATAS 7-33-97. The highest rates of plant conversion were produced on MS-based plant regeneration medium with 4.5 and 9.0 lM 2,4-D for CATAS 7-33-97 (85.0%) and 13.5 lM for CATAS 88-13 (75.0%), being higher than other reports (60%). Finally, the application of this system was discussed.

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“…Kelemahan lain penggunaan bibit karet asal biji sebagai batang bawah adalah adanya keragaman batang bawah sehingga potensi produksi dan karakter unggul lain dari batang atas tidak muncul karena ada perbedaan tingkat juvenilitas. Perbanyakan klonal bahan tanam karet melalui stek mikro pada lingkungan kultur in vitro (in vitro microcutting) telah berhasil dilakukan menggunakan eksplan yang berasal dari tanaman asal biji (Carron et al, 2000;Carron et al, 2003). Bibit karet yang dihasilkan melalui teknik ini memiliki perakaran yang kuat dan kokoh.…”

Section: Pendahuluanunclassified

“…Bibit karet yang dihasilkan melalui teknik ini memiliki perakaran yang kuat dan kokoh. Pertanaman muda karet asal bibit stek mikro menunjukkan pertumbuhan yang seragam dan memiliki bentuk konikal pada batang bagian bawah (Carron et al, 2000;Carron et al, 2003) dan mampu memproduksi lateks 5,8 -17% lebih tinggi dibandingkan dengan bibit asal okulasi (Dibi et al, 2010). Adaptasi teknik stek mikro karet di daerah tropik menghadapi berbagai kendala, salah satunya adalah rendahnya daya hidup planlet saat diaklimatisasi .…”

Section: Pendahuluanunclassified

Pengaruh periode pra-kondisi dan penutupan sungkup terhadap daya hidup planlet karet (Hevea brasiliensis Muell. Arg) Effect of pre-condition period and vessel closure on the survival rate of rubber (Hevea brasiliensis Muell. Arg) plantlets

SINTA¹,

NURHAIMI-HARIS²,

SUMARYONO³

2016

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Field Growth and Rubber Yield of Hevea Brasiliensis (Muëll.-Arg.) From Budded Versus in Vitro Micropropagated Plants From Clone Irca 18

Cited by 7 publications

References 0 publications

Produção De Mudas De Seringueira Por Meio Do Enraizamento De Estacas Coletadas De Plantas Adultas

Produção De Mudas De Seringueira Por Meio Do Enraizamento De Estacas Coletadas De Plantas Adultas

Micropropagation of self‐rooting juvenile clones by secondary somatic embryogenesis in Hevea brasiliensis

Pengaruh periode pra-kondisi dan penutupan sungkup terhadap daya hidup planlet karet (Hevea brasiliensis Muell. Arg) Effect of pre-condition period and vessel closure on the survival rate of rubber (Hevea brasiliensis Muell. Arg) plantlets

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