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Productivity and cytogenetic characteristics of guayule. Screening of plants from the mapimi region
Author(s) -
Rodriguez Diana Jasso,
Sánchez José Luis Angulo,
Godina Francisca Ramirez,
Reza Regino Morones,
Garcia Raúl Rodríguez
Publication year - 1993
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02564231
Subject(s) - natural rubber , productivity , biology , inflorescence , horticulture , ploidy , botany , microbiology and biotechnology , agronomy , materials science , composite material , gene , economics , macroeconomics , biochemistry
Guayule plants were screened in the region of Mapimi (Durango, Mexico) to evaluate physicochemical parameters for selection of increased productivity. The objective was to characterize rubber, and resin content, stem diameter, rubber molecular weight and cytology of these plants to identify and select high productivity sites. Samples were collected from nine locations within the Mapimi Region. Inflorescences containing young floral buds of the same plants were selected to determine ploidy level. Cytogenetic results showed the presence of di‐, tri‐ and tetraploids. Samples for rubber and resin analysis were cut from the branches. Genetic variation in molecular weight and molecular weight distributions for rubber was measured. Significant differences were found in resin content and stem diameter between the sampling sites, but differences were not significant for the rubber content between sites. A productivity parameter was defined and used to identify two locations where guayule genotypes exhibited the best characteristics for commercialization. This information may increase the industrial development and understanding of the polymerization bioprocess.