Palynological study on selected species from Hyacinthaceae with focus on taxonomical implications in Iran

Does the evolution of micromorphology accompany chromosomal changes on dysploid and polyploid levels in the Barnardia japonica complex (Hyacinthaceae)?

“…These differences were, however, not very pronounced. Although pollen exine ornamentations have been shown to be of great taxonomic significance in Hyacinthaceae [ 50 , 95 , 119 , 120 ], the exine sculpturing in Barnardia japonica has shown no variation with reticulate-perforate sculpturing in all analyzed cytotypes. Thus, none of the analyzed leaf and pollen micromorphological characters were of any taxonomic significance and thus cannot be used for identification of the cytotypes in the B. japonica complex.…”

“…The plants of the genus Barnardia possess rather large bulbs (over 4 cm in diameter) with several brown scales, an elongated raceme with 30–70 purple flowers, white or pale pink tepals including six stamens, and a central pistil [ 27 , 31 , 47 ]. The micromorphology of leaf epidermis and characters of pollen grains are often used as a diagnostic character to establish relationships and to define major groups in family Hyacinthaceae [ 48 – 50 ] as well as other economically important plant families such as Lamiaceae Martinov [ 51 ], Polygonaceae Juss. [ 52 ], Melastomataceae Juss.…”

Does the evolution of micromorphology accompany chromosomal changes on dysploid and polyploid levels in the Barnardia japonica complex (Hyacinthaceae)?

“…Although pollen exine ornamentations have been shown to be of taxonomic signi cance in Hyacinthaceae [43,77,95,96], the exine sculpturing in Barnardia japonica has shown no variation with reticulate-perforate sculpturing in all analyzed cytotypes. Thus, none of the analyzed leaf and pollen micromorphological characters were of any taxonomic signi cance and thus cannot be used for identi cation of the cytotypes in the B. japonica complex.…”

“…The micromorphology of leaf epidermis and characters of pollen grains are often used as a diagnostic character to establish relationships and to de ne major groups in family Hyacinthaceae [41][42][43] as well as other economically important plant families such as Lamiaceae [44], Polygonaceae [45], Melastomataceae [46], Asteraceae [47], Poaceae [48], and Iridaceae [49][50][51]. Speci cally, wax striation and size of stomatal complexes are considered to be important diagnostic value in Hyacinthaceae [41].…”

Palynological features and taxonomic significance for 16 species of Gagea (Liliaceae) from Xinjiang, China

“…Pollen morphology is scarcely affected by ecological conditions; thus, it is more stable than external macrographical morphology and has high genetic stability ( Zarre and Zarrei 2005 ; Blackmore 2007 ; Kadluczka et al 2022 ). Pollen size and morphology, such as shape, aperture type, mesocolpium diameter, exine ornamentation and perforation size, have great significance in plant taxonomy and pollen characteristics can be used to infer genetic relationships between ecological groups ( Li et al 2020 ) or interspecific taxonomic ranks ( Heidarian et al 2021 ).…”