Document Type

Thesis - Open Access

Award Date

1953

Degree Name

Master of Science (MS)

Department

Agronomy

Abstract

The induction or true breeding variants with unchanged chromosome member in a variety of Sorghum vulgare Pers. was reported by Franske and Rosa (5). These variants resulted from colchicina treatment of seedlings in a variety which was we known to breed true. The authors proposed that variant plants lmay have originated from a haploid chromosome complement formed bysomatic reduction, which was later restored to the diploid condition. Such a cell by virtue of its genetic constitution or its position in the meristomatic region may be able to initiate a s new growing point having homozygous diploid tissue. This proposal in itself does not explain the variation in plant type from the untreated full sib.These deviations may have arisen from chromosomal aberration in the form of deletions, inversions or translocation within the chromosome coomplanent. To determine it these chromosomal aberrations occurred a cytological study was made of the meiotic behavior 1n treated and untreated full sibe and F1 hybrids involving variants induced by colchicine treatment.

Library of Congress Subject Headings

Sorghum -- Varieties Colchicine

Description

Includes bibliographical references

Format

application/pdf

Number of Pages

46

Publisher

South Dakota State University

Rights

No Copyright - Non-Commercial Use Only
http://rightsstatements.org/vocab/NoC-NC/1.0/

Share

COinS