Download or read book Morphological Studies of Dactylis Glomerata L Orchard grass written by David C. Evans and published by . This book was released on with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microsporogenesis in Native and Introduced Forms of Dactylis Glomerata L written by P. L. Curran and published by . This book was released on 1961 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Orchard Grass Dactylis Glomerata written by Russell Arthur Oakley and published by . This book was released on 1910 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Variation in Populations of Dactylis Glomerata L written by Murray Raymond Davis and published by . This book was released on 1974 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Control of Flowering in Dactylis Glomerata L A Study of the Effects of Daylength and Temperature on the Control of Flower Formation in the Temperate Perennial Grass D glomerata L written by Paul Broué and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cytological Observations on Dactylis Glomerata L and a Consideration of Its Polyploid Nature written by Patrick Leonard Curran and published by . This book was released on 1958 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies in Epidermal Morphology in Subspecies of Dactylis Glomerata L written by and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Orchard Grass Dactylis Glomerata L written by D. B. Hannaway and published by . This book was released on 1999 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Karyotype Morphology of Some Diploid Subspecies of Dactylis Glomerata L Poaceae written by and published by . This book was released on 1991 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental and Genetic Factors Affecting Seed Set in Dactylis Glomerata L written by David L. West and published by . This book was released on 1970 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field, growth chamber, and greenhouse studies were carried out to evaluate factors that cause low seed set in Dactylis Glomerata L. The variety, 'Latar', and the parental clones of the variety, 'Pennlate', were studied in detail. Floral anatomy investigations indicated that 98 percent of Dactylis flowers opened at Corvallis in 1968 and that non-necrotic ovaries were present in 96.5 percent of the florets. The variety, 'Latar', and clone 'R' from 'Pennlate' which showed more necrotic ovaries at flowering time than the other types examined were also lower in seed set. Abnormal stigmatic bending was found to be associated with low seed set clonal types; reduced stigmatic area was found to be partially responsible for low seed set in these clones. Clonal types set slightly more seed at 82 F than at 72 F in a growth chamber. Plants maintained at 20 atmospheres of moisture stress at flowering time set significantly less seed than plants maintained at 12.5 atmospheres of stress. Greenhouse studies indicated that Dactylis seed set was significantly reduced by moisture stress during the flowering period but not by moisture stress shortly after heading or during the five day period after flowering. Forty-one 'Latar' plants from field grown material had a chromosome count of 2n = 28 which indicated that this low seed set variety did not contain a large number of aneuploid plants. Evidence for genetic irregularity was found in other aspects of the research. Examination of microsporocytes in clone 'R' revealed that ten percent of the metaphase cells showed lagging chromosomes, chromosome fragments, and bridges. A significant correlation between normal pollen and seed set was found in 616 heads from 43 commercial varieties grown at Corvallis in 1969. Genetic instability may have been responsible for both pollen and ovule abortion. Plants with a normal pollen rating of 91 percent or over had seed set six percent greater than the population mean. Significant differences were found in seed set between clonal types which indicated that some clones were more fertile than others. Significant year-to-year differences in seed set were found within clones; genetic environmental interactions were apparently responsible for these fertility differences. This research indicated that some Dactylis varieties grown for seed in Oregon were low in seed set and procedures were worked out for identifying the infertility in varieties. Screening clonal materials in polycross nurseries to remove infertile types was suggested as a way of increasing seed set in commercial varieties.

Download or read book CRC World Dictionary of Grasses written by Umberto Quattrocchi and published by CRC Press. This book was released on 2006-04-26 with total page 2402 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2008 NOMINEE The Council on Botanical and Horticultural Libraries Annual Award for a Significant Work in Botanical or Horticultural Literature now we have easier and better access to grass data than ever before in human history. That is a marked step forward. Congratulazioni Professor Quattrocchi!-Daniel F. Austin, writing in Economic Botany &n

Download or read book Plant Inventory written by and published by . This book was released on 1994 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies in Epidermal Morphology in Subspecies of Dactylis Glomerata L written by Maureen H. Benson and published by . This book was released on 1966 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metabolic Inhibitor in Orchardgrass Dactylis Glomerata L written by Kirpal Singh Sidhu and published by . This book was released on 1966 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Soil Seed Banks of North West Europe written by Ken Thompson and published by Cambridge University Press. This book was released on 1997 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buried viable seed banks are a fundamental aspect of seed plant biology. They play a key role in the conservation and restoration of plant communities and the response of plants to changing land use and climate. There is almost no area of plant ecology in which seed banks are not implicated. Despite several recent reviews of the ecology of seed banks, there has previously been no single source of data on seed persistence in individual species. This volume, which compiles the available data from the nineteenth century up to the end of 1993, provides this source for the 1189 members of the northwest European flora. The text describes the criteria for inclusion of data and discusses seed classification systems, the relative representation of different habitats, methods and taxa, and challenges for future research. Includes PC disc with database in searchable format.

Download or read book Cytogenic Studies in the Polyploid Complex of Dactylis Glomerata L written by Daniel Zohary and published by . This book was released on 1956 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seasonal Pattern of Root Activity of Dactylis Glomerata L and Ranunculus Frieseanus Jord Grown in Mono and Mixed Culture Measured by Using P32 written by Azmi Zaki Osman and published by . This book was released on 1971 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: