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Genetic analysis of some chlorophyll fluorescence and productivity parameters in barley ( Hordeum vulgare )
Author(s) -
Marcial L.,
Sarrafi A.
Publication year - 1996
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1996.tb00930.x
Subject(s) - anthesis , biology , diallel cross , hordeum vulgare , chlorophyll fluorescence , randomized block design , agronomy , chlorophyll , photosynthesis , dry weight , horticulture , poaceae , botany , cultivar , hybrid
Reciprocal crosses were made between five barley genotypes of diverse origin. Parents and 20 F 1 S were grown in a greenhouse in a randomized block design with three replications. Each replication consisted of one pot containing three plants. Chlorophyll fluorescence activity of the penultimate leaf (below the flag leaf) of the main stem in each plant was measured at two stages of development (six‐leaf stage and anthesis). At anthesis, and after measuring fluorescence parameters, a drought stress was applied. Yield components were measured at complete maturity. Statistical analysis for chlorophyll fluorescence parameters showed high genetic variability for the traits studied at both the six‐leaf stage and anthesis, but most fluorescence parameters had decreased by anthesis. General and specific combining abilities of a diallel analysis were significant for most of the characters studied. General combining ability (GCA) values were usually more important than those of specific combining ability (SCA), showing the importance of additive genetic control for the fluorescence traits. Reciprocal effects were not significant for the fluorescence traits studied. A high genetic variability was also observed for yield components. Additive gene effects for plant weight, spike number, spike weight, number of grains per plant and 1000‐grain weight were demonstrated. Potential photosynthetic activity (Rfd) at anthesis was positively correlated with plant weight, spike number per plant and 1000‐grain weight.