Pollen morphology of the genus Alchemilla L. (Rosaceae) in Iran

Objective & Hypothesis:This paper reports the morphological characters of 18 Iranian species of the genus Alchemilla using light and scanning electron microscopy.

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Key Findings & Data:The pollen grains are monad, radially symmetrical, isopolar, or subisopolar; small to medium in size; tri- and tetracolporate; rectangular to cylindrical (from equatorial view) and triangular to circular (from polar view) in outline; and prolate-spheroidal to subprolate and prolate in shape.

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Conclusion & Impact:Our findings revealed the significance of palynological evidence in explaining the species relationship.

🔬Design:Research Article

📍Scope:Comprehensive Sample

⚙️Variables:Alchemilla · Rosaceae · palynological characters

Abstract

This paper reports the morphological characters of 18 Iranian species of the genus Alchemilla using light and scanning electron microscopy. The pollen grains are monad, radially symmetrical, isopolar, or subisopolar; small to medium in size; tri- and tetracolporate; rectangular to cylindrical (from equatorial view) and triangular to circular (from polar view) in outline; and prolate-spheroidal to subprolate and prolate in shape. The exine ornamentation is psilate and microechinate. Based on the exine sculpturing and microechinate distribution pattern, three main types, four subtypes, and two categories of pollen grains were recognized. We used cluster analysis and principal component analysis to determine the potential contribution of pollen morphological characters to the species relationships. Our findings revealed the significance of palynological evidence in explaining the species relationship. The results of two multivariate analyses showed a close affinity among the seven studied species (A.amardica, A. sericata, A. fluminea, A. kurdica, A. hyrcana, A. sedelmeyeriana, and A. pesudocartalinica).

Özet

This paper reports the morphological characters of 18 Iranian species of the genus Alchemilla using light and scanning electron microscopy. The pollen grains are monad, radially symmetrical, isopolar, or subisopolar; small to medium in size; tri- and tetracolporate; rectangular to cylindrical (from equatorial view) and triangular to circular (from polar view) in outline; and prolate-spheroidal to subprolate and prolate in shape. The exine ornamentation is psilate and microechinate. Based on the exine sculpturing and microechinate distribution pattern, three main types, four subtypes, and two categories of pollen grains were recognized. We used cluster analysis and principal component analysis to determine the potential contribution of pollen morphological characters to the species relationships. Our findings revealed the significance of palynological evidence in explaining the species relationship. The results of two multivariate analyses showed a close affinity among the seven studied species (A.amardica, A. sericata, A. fluminea, A. kurdica, A. hyrcana, A. sedelmeyeriana, and A. pesudocartalinica).

Keywords

Alchemilla Rosaceae palynological characters numerical analysis Iran

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Cite This Article

FAGHIR, M. B., ATTAR, F., SHAVVON, R. S., MEHRMANESH, A. (2015). Pollen morphology of the genus Alchemilla L. (Rosaceae) in Iran. Turkish Journal of Botany, Cilt: 39 - Sayı: 2, 267–279. https://ajindex.com/articles/183262

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