Induced Colchitetraploids in <i>Allium cepa</i> L.

• Ahirwar Ramesh

  School of Studies in Botany, Vikram University

• Goyal Sapna

  School of Studies in Botany, Vikram University

• Verma Rakesh Chandra

  School of Studies in Botany, Vikram University

Abstract

Polyploidy was induced by colchicine in Allium cepa L. Five plants of Allium cepa (AC1–AC5) were isolated from the 0.2% colchicine treated inflorescences. The meiotic stages were analyzed in treated buds. Various cytological features like chromosomal associations (quadrivalents, bivalents and univalents), chiasmata frequency and terminalization coefficient were recorded at diakinesis/metaphase-I. Anaphase/telophase-I/II were studied in all the cholchitetraploids. In all these plants, the anaphase/telophase-I were abnormal showing unequal distribution, laggards, micronuclei and multipolar at telophase-II. Pollen mitosis was studied in these plants. The chromosomes (n=16) were found at metaphase. Pollen fertility was low (40.9 to 56.9%) in all colchitetraploids.

Journal

• CYTOLOGIA

  CYTOLOGIA 80 (4), 419-425, 2015

  Japan Mendel Society, International Society of Cytology

Keywords

• Induced colchitetraploid
• <i>Allium cepa</i> L.
• Pollen fertility
• Colchicine
• Chromosome

Details

• CRID: 1390282679085597056
• NII Article ID: 130005118548
• DOI: 10.1508/cytologia.80.419
• ISSN: 13487019
• ISSN: 00114545
• Web Site: https://www.jstage.jst.go.jp/article/cytologia/80/4/80_419/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed