Download or read book Genetic and Environmental Effects on Growth Resin and Rubber Production in Guayule Parthenium Argentatum Gray written by and published by . This book was released on 2005 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guayule (Parthenium argentatum Gray) is a rubber producing plant native to the Chihuahuan Desert, which is currently being investigated as a source of hypoallergenic latex. Current efforts are focusing on increasing latex/rubber production in the plant by either manipulating the rubber biosynthetic pathway, altering agronomic practices to take advantage of environmental conditions that increase rubber synthesis, or both. Field and greenhouse studies were conducted to more fully understand the effect of genetic and environmental manipulation on rubber production in guayule. Three guayule breeding lines were transformed in order to increase the availability of the initiators of rubber synthesis. The tissue-culture-derived transgenic plants and their seed-generated progeny were grown in separate field experiments. Transformation with the genes for the initiators of rubber synthesis did not increase rubber concentration or yield. Height and width had high heritability estimates in the transgenic progeny and were the traits most correlated with rubber yield, while rubber concentration was poorly correlated with height and width. Greenhouse studies were conducted to understand why water stress and low night temperatures increase rubber concentration. Water stress increased the contribution of the stems to the total rubber in the plant and increased the bark to wood ratio of the stem. Most rubber is accumulated in the stems and these two effects of water stress contributed to the increased rubber concentration in water-stressed plants. Low night temperature reduced plant growth without a decrease in carbon exchange. Allocation of carbon fixation products to rubber synthesis rather than growth, contribute to the high rubber production under low night temperatures. Contributions from both breeders and agronomists are needed to further improve guayule rubber/latex yield.

Download or read book Research on Guayule Parthenium Argentatum 1942 1959 written by Bayard Louis Hammond and published by . This book was released on 1965 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guayule Parthenium Argentatum Gray written by Francis Ernest Lloyd and published by . This book was released on 1911 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guayule written by National Academy of Sciences and published by The Minerva Group, Inc.. This book was released on 2002-04 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report examines the state of knowledge and the future promise of guayule Parthenium argentatum Gray, a little known shrub native to the desert of southwest Texas and northern Mexico that was a commercial source of natural rubber during the first half of this century.This perennial shrub thrives in arid conditions and can survive heavy frosts. Guayule, after thorough drying, has been found to contain as much as 26% rubber. This rubber can be used to make vehicle tires or any other item currently made with natural rubber. It is a promising plant for use in reforestation of desert fringe lands and is easy to grow. Extraction of the rubber is not technically difficult; in fact, small-scale household extraction is possible. The plant can be cut down to the ground and will grow again from the roots.The book covers: background and history, botanical information, rubber extraction, agricultural production, rubber quality, economics, research needs, selected readings and recommendations.When guayule grows actively, it produces little or no rubber. If the plant is stressed, growth slows and the products from photosynthesis are diverted into rubber production. Thus when growth slows during cold weather or because of reduced moisture supply, the rubber content begins to increase.

Download or read book The Relation of Growth to Rubber Production in Guayule Parthenium Argentatum Gray written by George H. Abel and published by . This book was released on 1948 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Growth Studies on Guayule Parthenium Argentatum written by Ernst Artschwager and published by . This book was released on 1945 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guayule Rubber Development written by United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Regional and Community Development and published by . This book was released on 1978 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guayule Rubber Society Inc Fifth Annual Conference Washington D C June 17 21 1984 written by Guayule Rubber Society. Conference and published by . This book was released on 1984 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water and Stress Effects on Growth and Rubber Accumulation in Guayule Parthenium Argentatum Gray written by Donald Jerome Garrot and published by . This book was released on 1984 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Flowering on Rubber Production in Guayule Parthenium Argentatum Gray written by Katherine Lucia Willard and published by . This book was released on 1985 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guayule Parthenium argentatum written by Maria Aparecida S. Soares and published by . This book was released on 1986 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guayule written by William Grovenor McGinnies and published by . This book was released on 1975 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historical review. Description and ecology. Early history of rubber production. World War II Program. Seed and seed handling. Nurseries. Field practices. Insect and disease control. Harvesting. Methods of extracting rubber from the Guayule plant.

Download or read book Effect of Flowering and Water Stress on Growth Transpiration and Rubber Production in Guayule Parthenium Argentatum written by R. Ferraris and published by . This book was released on 1987 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genotype X Environment Interaction Disease Resistance and Postharvest Rubber and Resin Stability Studies of Guayule Parthenium Argentatum Gray Breeding Lines written by Carol Dee Grote-Flores and published by . This book was released on 1997 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guayule written by National Research Council (U.S.). Panel on Guayule and published by . This book was released on 1977 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Technology Assessment of Guayule Rubber Commercialization written by and published by . This book was released on 1980 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: