Download or read book Quantitative Genetics Studies Relating to the Domestication of Meadowfoam Limnanthes Spp as a New Oil Crop written by Elhag Hassan Abuelgasim and published by . This book was released on 1982 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantitative Genetic Studies Relating to the Domestication of Meadowfoam Limnanthes Spp as a New Oil Crop written by Elhag Hassan Abuelgasim and published by . This book was released on 1982 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation for the 1990 farm bill written by United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry and published by . This book was released on 1989 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Potential New Crop written by Jerry Rafats and published by . This book was released on 1989 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation for the 1990 farm bill written by United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry and published by . This book was released on 1989 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation for the 1990 Farm Bill The state of agricultural research and extension written by United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry and published by . This book was released on 1989 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sudan Sudanese written by Osman Hassan Ahmed and published by . This book was released on 1982 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quick Bibliography Series written by and published by . This book was released on 1976 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Energy Update written by and published by . This book was released on 1985 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetics of Low Erucic Acid and Cytological Analyses of Wide Hybrids in Meadowfoam written by Sonali Dilip Gandhi and published by . This book was released on 2002 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cultivated meadowfoam (Limnanthes alba Benth.) is an annual oil seed crop native to southern Oregon. California and British Columbia. The genus Limnanthes is composed of nine species and divided into two sections, Inflexae and Reflexae. The seed oil of meadowfoam is a rich source of erucic acid and several novel very long-chain fatty acids (VLCs). The former has been linked to increased risk of heart disease. The safe limit of erucic acid for human consumption is up to 5% of total fatty acids. Because the erucic acid concentrations of wildtype lines typically range from 9 to 23% and low erucic acid variants have not been discovered, chemical mutagenesis was used to develop a mutant line (LE76) with greatly reduced erucic acid (3%). The phenotypic distributions of F2 progeny from crosses between wildtype and mutant lines were continuous and differed across genetic backgrounds. Quantitative trait loci (QTL) affecting erucic and dienoic acid were mapped using F2:3 progeny from a cross between LE76 and Wheeler (a wildtype line) and a simple sequence repeat (SSR) map spanning the meadowfoam genome. The domestication of meadowfoam was based on L. alba, belonging to section Inflexac. The secondary and tertiary gene pools have not been important to the domestication process and have not supplied diversity for meadowfoam breeding. With the objectives of introgressing genes from wild relatives and also producing cytoplasmic male sterile lines by inserting the nuclear genome of L. alba into wild cytoplasm, inter-sectional crosses involving L. alba and three subspecies of L. douglasii and intra-sectional crosses involving L. alba and two subspecies of L. floccosa were carried out. The isolation mechanisms involved in keeping species apart from each other were found to be different within and between sections. The study of partially fertile intra-sectional hybrids showed that the reduced pollen viability (30-33%) was not due to structural differences between the chromosomes of the two species, as normal meiotic behavior was observed in PMCs. The inter-sectional crosses were found to be incompatible and various abnormalities during pollen tube growth were observed.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1983 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vernal Pools and Intermittent Streams written by Subodh Jain and published by . This book was released on 1984 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quick Bibliography Series written by National Agricultural Library (U.S.). Reference Division and published by . This book was released on 1989 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Breeding Abstracts written by and published by . This book was released on 1983 with total page 1220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Selection Criteria for Improved Yields in Limnanthes Spp Meadowfoam written by Stephen Lindley Krebs and published by . This book was released on 1985 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Development of Three Meadowfoam Limnanthes Spp Lines written by Timothy E. Fiez and published by . This book was released on 1990 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meadowfoam (Limnanthes R. Br. spp.), a source of C20 and C22 fatty acids, is a new industrial oilseed crop adapted to the Willamette Valley of Oregon. Increased oil yield per land area may increase the rate of meadowfoam commercialization. Using two half-sib L. floccosa x L. alba lines, 85-765 and 85-729, and L. alba 'Mermaid', this study was conducted to establish relationships between oil yield, yield components, and agronomical, phenological, and morphological traits. This information may enhance the development of high oil yielding meadowfoam cultivars and cultural practices. This study was also conducted to characterize meadowfoam growth and development, to quantify ethanol soluble carbohydrates and starch present in above-ground plant organs, and to relate growth, development, and carbohydrate quantities to seed yield. This information is not present in the literature and is also needed to increase meadowfoam oil yield. The three lines were grown in solid stand in 1987-88 and 1988-89 at the Oregon State University Schmidt Farm on an Amity silt loam (fine-silty, mixed, mesic Argiaquic Xeric Agialboll). Line 85-765 produced the greatest oil yield in 1987-88. Seed weight of line 85-765 was 18 and 13% greater than lines 85-729 and Mermaid, respectively, and seed oil content was 18% greater than Mermaid. Both lines 85-765 and Mermaid produced greater oil yields than line 85-729 in 1988-89. Line 85-765 produced a 7% greater seed weight and Mermaid produced 55% more seeds per flower than line 85-729. Seed weight of line 85-765 was also 9% greater than Mermaid in 1988-89, but Mermaid produced 31% more seeds per flower than line 85-765. Seed weight differences were apparently due to variation in seed growth rate and not seed growth duration. Differences in seeds per flower were not related to pollinator activity or flower phenology. Organ dry weights and leaf area indices (LAI) were measured at 13 and 11 intervals after emergence in 1987-88 and 1988-89, respectively. Ethanol soluble carbohydrates and starch were quantified when stem weight peaked and at physiological maturity. There were no differences in predicted mean values of total above-ground and individual organ dry weights and LAI between lines in either season. In both seasons, total above-ground dry matter peaked between mid and last bloom. During flowering when stem weight peaked, stems and flowers contained 283 and 148 g kg−1 ethanol soluble carbohydrates, respectively, averaged over lines and years. LAI peaked prior to flowering and was less than 0.1 at last bloom each season, while 35 and 40% of the seed fill period occurred after last bloom in 1987-88 and 1988-89, respectively, averaged across lines. Seed yield was correlated with the amount of potentially remobilizable carbohydrate accumulated when stem weight peaked (r=0.54). Thus, developing seeds obtain assimilates mainly from sources other than current leaf photosynthesis.
Download or read book Advances in Plant Breeding written by A. K. Mandal and published by . This book was released on 1991 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
