Germplasm of Hevea brasiliensis in Nigeria

Omokhafe, K.O.; Aghughu, O; Imoren, E

doi:10.30574/gscbps.2017.1.2.0025

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Arg.) is mainly propagated through the budding technique where the superior clone's scion is attached to a recommended rootstock seedling [1,2]. The scion will grow to become aboveground parts including the stem, branch, and canopy, while the rootstock will provide the root system.…”

Section: Introductionmentioning

confidence: 99%

Seedlings growth from different age of rubber trees (Hevea brasiliensis Muell. Arg.) experiencing repeated leaf fall

Junaidi,

Andriyanto,

Fauzi

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The budding technique propagation requires rootstock, which are raised from rubber seeds. Due to repeated leaf fall disease since 2015, seed production dropped and threatened the rubber-replanting program. Amid this situation, young trees may be a temporary source of the seeds for rootstocks, which under normal conditions is not recommended. To test this hypothesis, a comparison of germination rate, seedling growth, and biomass accumulation of the seeds from young and mature PB 260 rubber trees was carried out at Sungei Putih Research Unit, Indonesian Rubber Research Institute, North Sumatra, Indonesia. The study showed that the germination rate of the seeds was low i.e. 7.23 + 2.96 % of young plants and 21.96 + 13.51 % of mature plants respectively, both were below normal values around 70 – 80%. After germination, no significant difference was found in the growth of seedlings from young trees and their mature counterparts. The root/shoot ratio exhibited no significant difference between the two types of seedlings observed, indicating a similar biomass accumulation capability. In the condition when seed supply was limited due to leaf fall disease, the seeds of young trees might be used as a temporary source with standard selection protocols should be implied.

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Section: Introductionmentioning

confidence: 99%

Seedlings growth from different age of rubber trees (Hevea brasiliensis Muell. Arg.) experiencing repeated leaf fall

Junaidi,

Andriyanto,

Fauzi

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…The success of crop improvement depends on the extent of genetic diversity available in germplasms as well as information on important traits. Recently, many studies have been conducted in germplasm banks in countries such as Vietnam 3 , Malaysia 4 , 5 , Nigeria 6 , Sri Lanka 7 , Brazil 8 – 10 and India 11 . Genetic variability studies are crucial for the selection of parents for hybridization 12 .…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity associated with natural rubber quality in elite genotypes of the rubber tree

Sant’Anna

Gouvêa

Martins

et al. 2021

Sci Rep

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The objective of this study was to evaluate the genetic variability of natural rubber latex traits among 44 elite genotypes of the rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Müell. Arg.]. Multivariate analysis and machine learning techniques were used, targeting the selection of parents that demonstrate superior characters. We analyzed traits related to technological or physicochemical properties of natural rubber latex, such as Wallace plasticity (P0), the plasticity retention index [PRI (%)], Mooney viscosity (VR), ash percentage (Ash), acetone extract percentage (AE), and nitrogen percentage (N), to study genetic diversity. Multivariate [unweighted pair group method with arithmetic means (UPGMA) and Tocher)] and machine learning techniques [K-means and Kohonen’s self-organizing maps (SOMs)] were employed. The genotypes showed high genetic variability for some of the evaluated traits. The traits PRI, Ash, and PO contributed the most to genetic diversity. The genotypes were classified into six clusters by the UPGMA method, and the results were consistent with the Tocher, K-means and SOM results. PRI can be used to improve the industrial potential of clones. The clones IAC 418 and PB 326 were the most divergent, followed by IAC 404 and IAC 56. These genotypes and others from the IAC 500 and 400 series could be used to start a breeding program. These combinations offer greater heterotic potential than the others, which can be used to improve components of rubber latex quality. Thus, it is important to consider the quality of rubber latex in the early stage of breeding programs.

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Germplasm of Hevea brasiliensis in Nigeria

Cited by 2 publications

References 4 publications

Seedlings growth from different age of rubber trees (Hevea brasiliensis Muell. Arg.) experiencing repeated leaf fall

Seedlings growth from different age of rubber trees (Hevea brasiliensis Muell. Arg.) experiencing repeated leaf fall

Genetic diversity associated with natural rubber quality in elite genotypes of the rubber tree

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