scholarly journals Anther Ontogeny and Microsporogenesis in Helianthus annuus L. (Compositae)

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Aslihan ÇETİNBAŞ ◽  
Meral ÜNAL
Keyword(s):  
Helianthus Annuus ◽  
Anther Ontogeny

scholarly journals Anther Ontogeny and Microsporogenesis in Helianthus annuus L. (Compositae)

2015 ◽  
Vol 7 (1) ◽  
pp. 52-56
Author(s):  
Aslihan ÇETİNBAŞ ◽  
Meral ÜNAL
Keyword(s):  
Helianthus Annuus ◽  
Meiotic Division ◽  
Pollen Grains ◽  
Middle Layer ◽  
Anther Wall ◽  
Epidermal Layer ◽  
Anther Dehiscence ◽  
Binucleate Cells ◽  
Plasmodial Tapetum ◽  
Anther Ontogeny

In this study, anther ontogeny and microsporogenesis were analysed in Helianthus annuus L. The undifferentiated anther is ovoid-shaped and the differentiation starts with the appearance of archesporial cells. Mature anthers are tetrasporangiate. The anther wall is composed of epidermis, endothecium, middle layer and plasmodial tapetum. Endothecial cells show no fibrous thickening. Tapetum is amoeboid type with binucleate cells. Epidermal layer remains intact until anther dehiscence; however, middle layer, endothecium and tapetum disappear during development. At the end of regular meiotic division tetrahedral microspore tetrads are formed. Pollen grains are triporate, suboblate and angulaperturate.

Characteristics of action potentials in Helianthus annuus

1991 ◽  
Vol 83 (4) ◽  
pp. 601-604 ◽  
Author(s):  
Tadeusz Zawadzki ◽  
Eric Davies ◽  
Halina Dziubinska ◽  
Kazimierz Trebacz
Keyword(s):  
Helianthus Annuus ◽  
Action Potentials

THE PROBLEM OF SAFE SUNFLOWER (Helianthus annuus L.) USE FOR FOOD AND FODDER PURPOSES (review)

2018 ◽  
Vol 53 (3) ◽  
pp. 485-498
Author(s):  
G.P. Kononenko ◽  
◽  
M.I. Ustyuzhanina ◽  
A.A. Burkin ◽  
◽  
...  
Keyword(s):  
Helianthus Annuus ◽  
Helianthus Annuus L

Sunflowers (Helianthus annuus L.) on Top of a Constructed Wetland as an Engineered Ecosystem to Clean Sewage Onsite

2014 ◽  
Vol 2014 (2) ◽  
pp. 83-91
Author(s):  
Alfredo Garcia-Perez ◽  
◽  
Mark Harrison ◽  
Bill Grant ◽  
◽  
...  
Keyword(s):  
Helianthus Annuus ◽  
Constructed Wetland ◽  
Helianthus Annuus L
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