Chromosomal structural changes in Capsicum annuum L. and C. chinense Jacq

• Published in: Euphytica Vol. 67; no. 1-2; pp. 155 - 160
• Main Authors: Lanteri, S. (Plant Breeding and Seed Production D.I.V.A.P.R.A., Torino (Italy)), Pickersgill, B
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer 1993
• Subjects: Agronomy. Soil science and plant productions; APAREAMIENTO CROMOSOMICO; APPARIEMENT CHROMOSOMIQUE; Biological and medical sciences; CAPSICUM ANNUUM; CAPSICUM CHINENSE; CHROMOSOME; CHROMOSOME PAIRING; CHROMOSOMES; CROMOSOMAS; F1 HYBRIDS; Fundamental and applied biological sciences. Psychology; Genetics and breeding of economic plants; HIBRIDACION INTERESPECIFICA; HIBRIDO F1; HYBRIDATION INTERSPECIFIQUE; HYBRIDE F1; Interspecific and intergeneric hybridization, introgressions; INTERSPECIFIC HYBRIDIZATION; Plant breeding: fundamental aspects and methodology; Chromosomal aberration; Chromosome pairing; Chromosome; Dicotyledones; Angiospermae; Interspecific hybridization; Cytogenetics; Abnormal chromosome; Flavoring crop; Capsicum annuum; Spermatophyta; Solanaceae; Structure; Chromosome translocation
• ISSN: 0014-2336; 1573-5060
• DOI: 10.1007/bf00022739

Meiosis was studied in an F sub(1) hybrid between domesticated Capsicum annuum) and its close relative C. chinense . The parental accessions differed by two chromosomal interchanges. A hexavalent was present in 18% of pollen mother cells collected in spring and summer but no multivalents were found in pollen mother cells collected in autumn and chiasmata were also less frequent then. Interchange heterozygosity, often resulting in multiples of six or more chromosomes, is characteristic of interspecific hybrids in Capsicum .