Pollen morphology and its taxonomic significance of the genus Crucianella L. (Rubiaceae) in Iran

2021 ◽  
Author(s):  
Soheyla Parsapanah ◽  
Marzieh Beygom Faghir
2015 ◽  
Vol 22 (2) ◽  
pp. 99-110 ◽  
Author(s):  
Maryam Naderifar ◽  
Ali Sonboli ◽  
Abbas Gholipour

Pollen morphology of 11 Iranian Dracocephalum L. species was investigated using light and scanning electron microscopy to evaluate their taxonomic significance for the infrageneric classification of the genus. Pollen grains of all examined taxa were isopolar, hexacolpate, circular in polar view and spheroidal to prolate in equatorial view (P/E = 1.0?2.0). The smallest pollen grains were observed in D. aucheri (P = 29.7 ?m, E = 22.6 ?m), while the largest pollen was found in D. lindbergii (P = 45.1 ?m, E = 33.7 ?m). The highest and lowest apocolpium index (AI) were measured in D. aucheri (AI = 0.27) and D. surmandinum (AI = 0.08), respectively. Colpus membrane was egranulate in all examined species except for D. multicaule and D. ghahremanii. The main exine ornamentation type was characterized as bireticulate including five different subtypes. The results revealed that the exine ornamentation is a diagnostic character useful for the classification of Dracocephalum.Bangladesh J. Plant Taxon. 22(2): 99-110, 2015 (December)


2020 ◽  
Vol 92 (3) ◽  
Author(s):  
SHOMAILA ASHFAQ ◽  
MUSHTAQ AHMAD ◽  
MUHAMMAD ZAFAR ◽  
SHAZIA SULTANA ◽  
SARAJ BAHADUR ◽  
...  

2010 ◽  
Vol 290 (1-4) ◽  
pp. 75-83 ◽  
Author(s):  
Jia-Xi Liu ◽  
Jing-Yu Li ◽  
Yu-Long Zhang ◽  
Jian-Chang Ning

2016 ◽  
Vol 303 (3) ◽  
pp. 317-327 ◽  
Author(s):  
Amélia C. Tuler ◽  
Tatiane da Silva ◽  
Tatiana T. Carrijo ◽  
Mário L. Garbin ◽  
Cláudia B. F. Mendonça ◽  
...  

Grana ◽  
1986 ◽  
Vol 25 (3) ◽  
pp. 171-176 ◽  
Author(s):  
M. J. Díez ◽  
B. Valdés ◽  
I. Fernández

2010 ◽  
Vol 121 (1-2) ◽  
pp. 85-96 ◽  
Author(s):  
Seyed M. M. Hamdi ◽  
Mostafa Assadi ◽  
José G. Segarra-Moragues

2011 ◽  
Vol 297 (3-4) ◽  
pp. 171-183 ◽  
Author(s):  
António Pereira Coutinho ◽  
Carlos F. Aguiar ◽  
Diana Sá da Bandeira ◽  
Augusto M. Dinis

Sign in / Sign up

Export Citation Format

Share Document