New PDF release: Cytogenetics of Aneuploids

By Gurdev S. Khush

ISBN-10: 0124062504

ISBN-13: 9780124062504

Show description

Read or Download Cytogenetics of Aneuploids PDF

Similar botany books

Read e-book online Reproductive Allocation in Plants (Physiological Ecology) PDF

A lot attempt has been dedicated to constructing theories to provide an explanation for the large edition we become aware of in reproductive allocation between environments. Reproductive Allocation in vegetation describes why crops range within the share in their assets that they allocate to replica and appears into many of the theories.

Download PDF by C. Bas, Th.W. Kuyper, M.E. Noordeloos, E.C. Vellinga: Flora Agaricina Neerlandica: Critical Monographs on Families

A sequence of monographs on households of agarics and boleti as taking place within the Netherlands and adjoining areas.

P. Howse, J.M. Stevens, Owen T Jones's Insect Pheromones and their Use in Pest Management PDF

There's now a substantial literature on chemical ecology, which had its beginnings within the examine of insect pheromones. This starting was once attainable in basic terms via combining the disciplines and methods of biology and chemistry. For a biologist, it's obscure the time­ frames of analytical and artificial chemistry.

Additional info for Cytogenetics of Aneuploids

Example text

However, in the diploid species where the telotrisomics are most useful for cytogenetic analysis, monosomics in general are not viable, and telocentrics cannot be obtained as in the polyploid species. Nevertheless, monotelodisomics for at least those arms of the chromosome complement whose deficiency is tolerated at the sporophytic level may be induced by radiation or chemical mutagenesis. Thus whole arm deficiencies for fifteen of the twenty-four arms of the tomato chromosome complement are tolerated at the diploid level (Khush and Rick, 1966b, 1968a), and terminal deficiencies for at least eleven of these arms have been induced by radiation treatment.

1936) by the following procedure. A secondary trisomic 2/1 + 3-3 was rendered homozygous for prime type 4 by continuous backcrossing to the latter as the male parent. Secondaries regularly throw primaries in their progenies (Chapter 4). Therefore, among the offsprings of the secondary 2/2 + 3-3 homozygous for the 3-21 and 4-22 chromosomes, a In + 3-21 appeared through segregation. This was a primary 26 2. SOURCES OF TRISOMICS trisomic of prime type 4. By backcrossing to the standard line 1A, it was made homozygous for 3 · 4 and 21-22 chromosomes and thus became a desired tertiary trisomic of the standard line.

Because of their usefulness as a source of secondary trisomics, monoisodisomics were sought using marker genes whose arm locations were known (Khush and Rick, 1967d). According to this method, stocks homozygous for recessive markers of those arms whose deficiencies are tolerated were pollinated with irradiated pollen carrying normal alleles. The ¥1 progenies were grown, and plants showing the recessive phenotype were examined cytologically. Monoisodisomics were included in these pseudodominant plants.

Download PDF sample

Cytogenetics of Aneuploids by Gurdev S. Khush


by Thomas
4.5

Rated 4.67 of 5 – based on 6 votes