Quantitative phenotypical expression of three mutant genes in barley and the basis for defining an ideotype for Mediterranean environments

Three mutants induced in the two-rowed barley variety Beka and their three binary recombinants have been used in an attempt to define an ideotype suitable for Mediterranean agroclimatic conditions. Physiological methods (classical plant growth analysis) together with the study of genotype x environm...

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Bibliographic Details
Published in:	Theoretical and applied genetics Vol. 80; no. 6; pp. 762 - 768
Main Authors:	Molina-Cano, J.L, Garcia Moral, L.F. del, Ramos, J.M, Garcia Moral, M.B. del, Jimenez-Tejada, P, Romagosa, I, Roca Togores, F. de
Format:	Journal Article
Language:	English
Published:	Heidelberg Springer 01-12-1990 Berlin
Subjects:	Biological and medical sciences Classical genetics, quantitative genetics, hybrids crop yield dry matter accumulation filling period Fundamental and applied biological sciences. Psychology Genetics of eukaryotes. Biological and molecular evolution genotype genotype-environment interaction Hordeum vulgare ideotypes leaf area Mediterranean climate mutagenesis mutants phenotype plant morphology Pteridophyta, spermatophyta quantitative traits Vegetals Spain Barley Stability Genotype environment interaction Growth Genetic parameter Yield Mutation Gene expression Ideotype Quantitative analysis
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Summary:	Three mutants induced in the two-rowed barley variety Beka and their three binary recombinants have been used in an attempt to define an ideotype suitable for Mediterranean agroclimatic conditions. Physiological methods (classical plant growth analysis) together with the study of genotype x environment interaction for grain yield were used to characterize the genotypes. That characterization brought out the huge phenotypical variation produced by only three mutant genes, suggesting that single Mendelian genes may alone explain the quantitative variation, including grain yield, without the necessity of using the polygenic concept. The genotype best adapted to the environments studied is later in heading and has shorter straw and denser spikes than Beka; it also has higher inverse of leaf area rate and grain: leaf area ratio, a lower rate of leaf senescence, and a shorter grain filling period than the original variety.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0040-5752 1432-2242
DOI:	10.1007/BF00224189