Semantic matches for “chromosomes and plant classification”
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View page 14 and transcription
Collection-level dates: 1948–1977
Matched passage
… ot esculenta. The GRAPH model was our chief method to sort out the complex relationships within a cultivated species. The methods of use, and several suggestions on the intraspecific problems of cultivated plant taxonomy are described in sufficient detail so that workers can fully grasp our concepts. Proc. Int. Symp. Trop. Root Crops (Hawaii). pp. 66-70. This interesting application of the character analysis program indicates that it provides another method of classification, in addition to the power as a character analytic technique. GRAPE 1. Wirth, M., C. F. Estabrook and D. J. Rogers. 1965. A graph theory mode …
View page 70 and transcription
Collection-level dates: 1950–1987
Matched passage
… romosome wheat, T. Timopheevi, has no common name. This species is known only in western Georgia, where it is grown - a few thousand acres. The species is of botanical interest because its second set of 14 chromosomes, designated as set G, is different from that of any other wheat. It is also of great practical interest because it is resistant to virtually all diseases attacking other cultivated wheats, including rusts, smuts, and mildews. In the hands of skilled wheat breeders, it may become the ancestor of improved wheats for the next century. The 42-chromosome wheats, of which there are five, are as a group th …
View page 194 and transcription
Collection-level dates: 1948–1977
Matched passage
page 3 want to include in an overall comparison of plants to determine their overall similarity. First of all, we have non-inherited variations and which we can think of - progressive individual variation would be a subtitle there. The age of a plant would be one sort of consideration. If we are taking a group of species, we don't want to compare seedlings with mature plants. The characters that we would find in seedlings, the leaves are apt to be a different size for instance. It will not be in flower and we won't have enough information on that. We could however, if we wanted to make a classification that would …
View page 80 and transcription
Collection-level dates: 1919–1980
Matched passage
[67] Griesebach, A. H. R. 1866. Catalogus plantarum cubensium...... 4 + 301 pp. Lipaise. Hemley, A. S. 1879-88. Biologia centrali-americana......Botany. 4 vol., 110 pl. and map. London. F. 1948. In Journ. Wash. Acad. Sci. 38: 236-37. 1948. Stinchcock, A. S. 1893. In Rep. No. Bot. Gard. 4: 83. Offmannsegg, J. C. Graf von. 1824. Verzeichnisse der Pflanzenkulturen...... Hoff. Garten zu Dresden...... 310 pp., 1 pl. Dresden. 1826. Nachträge II...... 236 pp. Dresden. 1826. Nachträge III...... 96 pp. Dresden. Hooker, J. D. and B. D. Jackson. 1895. Index Kewensis...... 2 vol. in 4. Oxoni. supplements I - XII. 1900-1957. …
View page 14 and transcription
Collection-level dates: 1950–1987
Matched passage
and on alpine plants from the arctic regions of Atlantic Europe by the American Principal Investigators and Dr. Gunvor Knaben. Although all the Slovenian endemics were under study already this first season, special attention was given the following complexes and taxa, which may serve as examples. a. Iris cengialti Ambr. and I. illyrica Tommas. These are taxa of the eastern Alps and of the coastal mountains of the northern Adriatic. Although morphologically and geographically distinct, these species have been known to cross and give rise to apparently fertile hybrids, and on the basis of morphology some botanists …
View page 19 and transcription
Collection-level dates: 1950–1987
Matched passage
and on alpine plants from the arctic regions of Atlantic Europe by the American Principal Investigators and Dr. Gunvor Knaben. Although all the Slovenian endemics were under study already this first season, special attention was given the following complexes and taxa, which may serve as examples. a. Iris cengialti Ambr. and I. illyrica Tommas. These are taxa of the eastern Alps and of the coastal mountains of the northern Adriatic. Although morphologically and geographically distinct, these species have been known to cross and give rise to apparently fertile hybrids, and on the basis of morphology some botanists …
View page 7 and transcription
Collection-level dates: 1724–1848
Matched passage
Methodus Calycina. V. COMMUNES: 1 Perianthium simplicissimum. Milleria calice 3 fido Tetragonotheca 4 Chryfogonum - - 5 Melampodium - - 5 Porophyllum - - 5 Tagetes - - - 5 Tarchonanthus - - 7 Othonna - - - 8 2 Perianthium duplicatum. Tragopagon calice 8 & infrà Eriocephalus - - - 10 Rudbeckia - - - 12 Calendula - - - 20 Osteospermum - - 20 Doronicum - - - 20 Bellis - - - 20 Cotula - - - 20 Tussilago - - - 20 Helenia - - - 30 &c. Verbefina - - - 30 &c. Ageratum - - - 30 &c. Andryala - - - 30 &c. 3 Perianthium calyculatum. Prenanth.cal.inter. 5 Lampsana - - - 8 Cichorium - - - 8 Kleinia - - - 8 Hyoferis - - - 10 Ch …
View page 45 and transcription
Collection-level dates: 1950–1987
Matched passage
Orchis tridentata Scop. Paonia decora Andr. Plantago major L. Plantago reniformis G.Bech Primula wulfeniana Schott Romulea bulbocodium (L.)Schis Maek. Scabiosa leucophylla Scilla bifolia L. Scilla bifolia L. Serapias vomeracea Briq. (?) Tulipa griesebachiana Pont. (?) Veratrum nigrum L. Veratrum nigrum L. Aristolochia pallida Euphorbia glabriflora Linum austriacum L. Orchis morio L. Ornithogalum gussonei Ton. Ornithogalum divergens Borca Buzet/Croatia/ Štimlje/Kosmet/ Jahorina/Bosnia/ Jahorina/Bosnia/ Turska gora Sv. Dionizije nad Mirno /Croatia/ Jahorina/Bosnia/ Gorjanci Rižana Boštanj na Dolenjskem Titograd/Mon …
View page 231 and transcription
Collection-level dates: 1948–1977
Matched passage
… t. Other early authors were able to recognize such things as the compositae, these are terms I am sure that are in all of our vocabularies. We know approximately what these are. There are other families of plants recognized by us today which were very early established because of some inherent quality of the organisms. In the case of this particular group, it would certainly be the fruiting structure, this particular group would certainly be the total flowering mechanism that is the inflorescence structure, the inflorescence. We, incidentally, may recognize that in an historical development of things that there a …
View page 42 and transcription
Collection-level dates: 1950–1987
Matched passage
… ry that polyploid series in nature arise by species hybridization and summation of the diploid chromosome sets of the interrelated species. Let us, for example, assume that species I and species II have 14 chromosomes each, but 7 different kinds. The genomes of the two species may be denoted by AA and DD, each letter indicating a set of seven chromosomes. If hybrids are produced, they are AB. Winge assumed that the chromosome number in such species hybrids is sometimes doubled at an early stage of pregnancy in the zygote. This would occur because the chromosome replication would be distributed in such a way that …
View page 112 and transcription
Collection-level dates: 1948–1977
Matched passage
In Dicotyledoneae, there are about eight families of plants producing the most important vegetable fibers. Three of the most important families were mentioned above: the Linaceae (linen), Malvaceae (cotton) and Moraceae (hemp). The other families produce such products as jute (Tilliaceae), ramie, (Urticaceae), Sunn hemp (Leguminosae), Kapok (Bombacaceae) and floss (Asclepiadaceae). Many other types of vegetable fibers with specialized uses come from other families of dicots, but their products are not included here. One dicot, cotton (Malvaceae, Gossypium spp.), holds the first place in importance in the vegetabl …
View page 10 and transcription
Collection-level dates: 1950–1987
Matched passage
is designed to answer the basic question about what can be found in the wider sense of the word so the plant can be classified and again identified by simple observational methods as inevitably are used by non-specialists and by floristic botanists who do not require more exact information. Though this fundamental approach needs categories as do all kinds of studies, these may be rather arbitrarily chosen and hardly need to be made closely defined. When scientific knowledge advances, so the requirements of exactness the descriptive approach is supplemented by the comparative. This is first focused around the grou …
View page 52 and transcription
Collection-level dates: 1950–1987
Matched passage
… one method has yielded the main cogging answers that it could be expected to provide, then it is time to ask another kind of question by adopting new methods. This is just what has happened in the field of plant taxonomy, where the original approach is inevitably descriptive, because botanists set out to describe as fully and accurately as possible the variety of forms of the phenomena which they exhibit. This approach is designed to answer the basic question about what we, the facts, though it needs categories or divisions of all kinds of studies, these are rather arbitrarily chosen and hardly need to be more cl …
View page 34 and transcription
Collection-level dates: 1923–1963
Matched passage
… critical rather than a perfunctory final identification. I always do this, even with such groups as the grasses, critical Compositae, etc. You will understand, therefore, that just because I have named the plants I have no objections to sending the plants on to specialists for final checking. Please feel perfectly free to pass out named material, of any group, to any botanist you think will be interested in the plants. If they has any suggestions for bettering the naming note it end let me have it for checking. Ill send off a lot of the plant to specialists eventually, but only after all the material is in hand. …
View page 57 and transcription
Collection-level dates: 1948–1977
Matched passage
4. 5. Taxonomy The nomenclature of many cultivated plants is simply chaotic, mainly because taxonomists cannot be bothered about such everyday plants that have been interfered with by man and are not altogether God's own productions. Information should be provided to show how the wild forms differ from the cultivated forms of the species. Each plant should be listed by its correct Latin name plus synonymy. Keys would be provided as a basis for identification. Identification is often a major problem in dealing with cultivated plants, and for this reason this encyclopedia would, if necessary, have a taxonomic base.
View page 18 and transcription
Collection-level dates: 1923–1963
Matched passage
Trisomic series 26. N. sylvatica (control) 27. Trisomic - Whole plant #1 28. " " " #2 29. Leaves - normal and two trisomic 30. " " normal 2n+1 and 2n+2 (tetrasomic) 31. Double trisomic plant Artificial chromosome doubling via colchicine. (Another hypothesis) 32. Sylvestris haploid and diploid. 33. " " 3n 34. " " 4n-
View page 67 and transcription
Collection-level dates: 1923–1963
Matched passage
… Botanica Co; Groningen: N.V. Erven P. Noordhoff. $ 12.50. Parts I to IV document an interpretation (Part V) of the origins, relationships and evolution of the species of a representative genus of flowering plants based upon detailed evidence accumulated during many years of study of their distribution, morphology and cytogenetics. Present distribution of all species of the genus, mapped and interpreted in the light of the geologic history of the Americas, Antarctica and Australasia, is shown to correlate with other fundamental evidence of their phyletic conclusions. A living collection of fifty-six of the sixty r …
View page 78 and transcription
Collection-level dates: 1950–1987
Matched passage
20. Without hybridization, the chromosome number of grains and cereals can be doubled to form new species with characters somewhat different from their original stock. One such plant, the double-rye, which has 28 instead of 14 chromosomes, has been released for cultivation in Sweden in few years ago, and its quality is somewhat higher than that of ordinary rye. Also in twelve new varieties of barley with doubled chromosomes will be released very soon, and this method of plant breeding has been found to be very promising in several species of cultivated plants. The researches on wheat have given ample demonstratio …
View page 68 and transcription
Collection-level dates: 1950–1987
Matched passage
WIENS, D. and HALLECK, D.K., 1962: Chromosome numbers in Rocky Mountain plants. I. Bot. Not. 115, 455-464. WULFF, E.V., 1943: An introduction to historical plant geography. Waltham, Mass. WULFF, E.V., 1944: Istoricheskaya geografija rasteniy. Moskva, Leningrad. WYNNE-EDWARDS, V.C., 1939: Some factors in the isolation of rare alpine plants. Transact. Roy. Soc. Canada, Ser. 3, 33 (5), 35-42. ZHUKOVA, P.G., 1965: Kariologicheskaya kharakteristika nekotorykh rasteniy Chukotskogo poluostrova. Bot. Zhurn. 50, 1001-1004. ZHUKOVA, P.G., 1965: Kariologicheskaya kharakteristika nekotorykh vidov rasteniy ostrova Vrangel'ja. …
View page 100 and transcription
Collection-level dates: 1919–1980
Matched passage
<transcription> ETE es el indice de otra bibliografia (caribe Asia) gran parte de mi exvice sera muy servigable esta. SUBJECT INDEX—SYSTEMATIC: SEED PLANTS—ANGIOSPERMAE 685 Sinomenium diversifolium: Hemslay, W. B., 1912c—Makino, T., 1937)—Matsuda, S., 1911a. Stephania: Ochiai, E., 1928 (tetrandra, cephalantha)—Yamamoto, Yoshinatou, 1936 (Japan, Formosa). MIMOSACEAE Bentham, G., 1840b (synop.)—1875 (revis). [See also Leguminosae.] MORACEAE Burress, E.: 1873 (monogr.)—Hotta, T., 1936 (Japan)—Satomi, Y., 1931-33 (apodocarps)—Schneider, C. K., 1916c (Wilson's coll.). Artocarpus integerrima: Lacouperie, Terrien de, 18 …