M. Shokrpour; S.A. Mohammadi; M. Moghaddam; S.A. Ziai; A. Javanshir
Volume 24, Issue 3 , November 2008, , Pages 278-292
Abstract
To investigate the relationships between morphological, phytochemical and molecular markers in milk thistle, a set of 32 ecotypes collected from Iran along with two introduced varieties, Budakalaszi and CN seeds, were evaluated. Canonical correlation analysis between 8 morphological attributes and 7 ...
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To investigate the relationships between morphological, phytochemical and molecular markers in milk thistle, a set of 32 ecotypes collected from Iran along with two introduced varieties, Budakalaszi and CN seeds, were evaluated. Canonical correlation analysis between 8 morphological attributes and 7 flavonolignan compounds forming silymarin revealed that first two canonical variables showed high canonical correlations. The loadings of the canonical correlations indicated that ecotypes having higher values for 1000 seed weight and lower values for flowering time, plant height, capsule diameter and seed yield would have higher silychristin and silybin and lower silydianin contents. In other words, larger seeds would have higher silybin and lower silydianin. Out of 415 polymorphic markers, 37 and 29 markers showed significant association with flavonolignans markers and morphological attributes, respectively. The informative markers showed 54 and 45% of the variation for taxifolin and silychristin, respectively. In the case of morphological traits, more than 40% of 1000 seed weight, flowering date and plant height variation were determined by informative AFLP markers. Results of the study clarified that some of qualitative and quantitative properties of essential oil in milk thistle can be well predicted by morphological and also molecular markers.
F. Heidari; S. Zehtab Salmasi; A. Javanshir; H. Aliari; M.R. Dadpoor
Volume 24, Issue 1 , May 2008, , Pages 1-9
Abstract
Peppermint (Mentha piperita L.) from Lamiaceae family is one of the most important medicinal plants, used in food, sanitary and cosmetic industries. A field experiment was carried out in Tabriz University in 2005. In this study, the effects of four plant densities (8, 12, 16 and 20 plants/m2) and microelements ...
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Peppermint (Mentha piperita L.) from Lamiaceae family is one of the most important medicinal plants, used in food, sanitary and cosmetic industries. A field experiment was carried out in Tabriz University in 2005. In this study, the effects of four plant densities (8, 12, 16 and 20 plants/m2) and microelements of two level (nonspraying, spraying) on yield and essential oil production of peppermint were evaluated at two cuttings. The data obtained from each harvests by factorial experiment on the basis of randomized complete block design (RCBD) with three replications and two cutting analysis of compound variance (split plot on time). The results of the first cutting showed that microelements of spraying dry yield, bush and leaf essential oil percentage and essential oil yield increased. In the first cutting dry yield, the oil yield increased by increasing the plant density. In second cutting, microelement spraying cause dry yield and leaf essential oil percentage and essential oil yield of significant affected. Also dry yield increased by increasing the plant density .The results of two cutting indicated that peppermint plants grown better in the first cutting than the second cutting. Plants harvested in first cutting had higher dry yield and essential oil yield, but had lower bush and leaf essential oil. The maximum leaf essential oil percentage (2.96%) obtained with spraying in the second cutting. The maximum essential oil yield was obtained (20.02 li.ha-1) in the first cutting.