Rubber and resin contents of native guayule germplasm of Mexico

Kuruvadi, S.; Benítez, Alfonso López; Rodríguez, Diana Jasso de

doi:10.1016/s0926-6690(96)00213-0

Industrial Crops and Products

1997

DOI: 10.1016/s0926-6690(96)00213-0

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Rubber and resin contents of native guayule germplasm of Mexico

S. Kuruvadi

Alfonso López Benítez

Diana Jasso de Rodríguez

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Cited by 6 publications

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“…Despite this apparently narrow genetic base, there appears to be a large amount of variation in cultivated guayule (Ray et al, 2005), not only among lines but also within lines (Dierig et al, 1989a;Naqvi, 1985;Ray et al, 1990). There is also a great deal of unexploited variation available in native populations (De Rodríguez et al, 1993;Kuruvadi et al, 1997b). This variation could be a valuable tool in guayule improvement; however, methods that determine the genetic contribution to this variation and subsequent response to selection need to take into account guayule's unusual mode of reproduction.…”

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confidence: 99%

Upper and Lower Heritability Estimates in Guayule Based on Mode of Reproduction

Ray¹,

Veatch-Blohm²,

Teetor³

et al. 2007

J. Amer. Soc. Hort. Sci.

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Guayule (Parthenium argentatum Gray) has been difficult to improve through classical plant breeding because of its facultative apomictic reproductive system and long growth period to harvest (2–5 years). Attempts have been made to increase rubber concentration and yield by selecting for traits correlated with rubber production. The objective of this study was to estimate heritability values in guayule that more accurately account for the contributions of apomictic and sexual reproduction occurring among populations, using a modified parent–progeny regression. Heritability was calculated using a modified version of the formula for single parent–progeny regression (h 2 = 2b): that is, h 2 = (2 – p)b, where p = proportion of apomixis and b = regression coefficient. Therefore, heritability was estimated as a range of values between the midparent and single parent regression, which correspond to complete apomixis and complete sexuality, respectively. At 2 years of growth, there was a significant regression between each parent trait and the corresponding progeny trait except rubber and guayulin B concentrations, with heritability estimates ranging from moderate to high for most parameters measured. Because apomixis occurs more frequently than sexual reproduction, most heritability estimates should fall closer to the midparent value, resulting in lower heritability. To increase resin and rubber yield in the progeny, selection should focus on plant height and width because these two traits are highly correlated with resin and rubber yield and have the highest heritability of the traits measured.

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mentioning

confidence: 99%

Upper and Lower Heritability Estimates in Guayule Based on Mode of Reproduction

Ray¹,

Veatch-Blohm²,

Teetor³

et al. 2007

J. Amer. Soc. Hort. Sci.

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Mexican High Rubber Producing Guayule Shrubs: A Potential Source for Commercial Development

Rodríguez

Angulo-Sánchez²,

Rodrı́guez-Garcı́a

2006

J Polym Environ

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Guayule bagasse to make mycelium composites: An alternative to enhance the profitability of a sustainable guayule crop

Enrique

Castillo²,

Ledezma-Pérez³

et al. 2023

Biocatalysis and Agricultural Biotechnology

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Rubber and resin contents of native guayule germplasm of Mexico

Cited by 6 publications

References 4 publications

Upper and Lower Heritability Estimates in Guayule Based on Mode of Reproduction

Upper and Lower Heritability Estimates in Guayule Based on Mode of Reproduction

Mexican High Rubber Producing Guayule Shrubs: A Potential Source for Commercial Development

Guayule bagasse to make mycelium composites: An alternative to enhance the profitability of a sustainable guayule crop

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