Morphometry analysis and seed germination of Amaranthus cruentus, A. retroflexus and their hybrid (A. × turicensis)

V. Lanta, P. Havránek and V. Ondřej
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V. Lanta: Faculty of Biological Sciences, University of South Bohemia in Èeské Budìjovice, Czech Republic
P. Havránek: Faculty of Biological Sciences, University of South Bohemia in Èeské Budìjovice, Czech Republic
V. Ondřej: Faculty of Biological Sciences, University of South Bohemia in Èeské Budìjovice, Czech Republic

Plant, Soil and Environment, 2003, vol. 49, issue 8, 364-369

Abstract: A morphometric study of Amaranthus cruentus, A. retroflexus and their hybrid, A. × turicensis based on 75 plant samples (750 inflorescences), collected throughout the Olomouc-Holice area (Czech Republic), is presented. Using multivariete methods (including cluster analysis and canonical discriminant analysis), the existence of three groupings of plants was proven. The hybrid exhibited intermediate values of the width and length of female tepals, length of awl-shaped bracts, and seed size when compared with parental species. A germination experiment showed that dark seeds of A. × turicensis as well as dark seeds of A. retroflexus germinate scarcely and independently on the day length while light seeds of A. cruentus germinate promptly and markedly better under a short day regime. The chromosome analysis showed that A. retroflexus, A. cruentus, and A. × turicensis have the same chromosome number 34.

Keywords: amaranth; chromosome; morphological characteristics; seed germination; spontaneous hybrids (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:49:y:2003:i:8:id:4138-pse

DOI: 10.17221/4138-PSE

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