Zobrazeno 1 - 10
of 196
pro vyhledávání: '"John R. Rowley"'
Autor:
John R. Rowley, Joanne S. Rowley
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 65, Iss 1-2, Pp 83-90 (2014)
The exine of Anigozanthos viridis Endl. pollen is divided into two zones by a plane which has been referred to as a"commissural line"; in our results we refer to it as a junction plane - a more apt description. Following young stages there is a prono
Externí odkaz:
https://doaj.org/article/c8b6ff02fbbb400393b362811d0d16cb
Autor:
John R. Rowley, Björn Walles
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 56, Iss 2, Pp 215-227 (2014)
In Pinus sylvestris Ubisch bodies are produced repeatedly, and each crop is formed at a distinct phase in the secretory cycles of tapetal cells. While each production has a Ubisch body wall similar to the then current state of the exine with regard t
Externí odkaz:
https://doaj.org/article/54cf8e5169b74a6b8123b4857838e715
Autor:
Björn Walles, John R. Rowley
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 56, Iss 2, Pp 215-227 (2014)
In Pinus sylvestris Ubisch bodies are produced repeatedly, and each crop is formed at a distinct phase in the secretory cycles of tapetal cells. While each production has a Ubisch body wall similar to the then current state of the exine with regard t
Autor:
Joanne S. Rowley, John R. Rowley
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 65, Iss 1-2, Pp 83-90 (2014)
The exine of Anigozanthos viridis Endl. pollen is divided into two zones by a plane which has been referred to as a"commissural line"; in our results we refer to it as a junction plane - a more apt description. Following young stages there is a prono
Publikováno v:
Plant Systematics and Evolution. 284:17-32
Compositae exhibit some of the most complex and diverse pollen grains in flowering plants. This paper reviews the evolutionary and developmental origins of this diversity in pollen structure using recent models based on the behaviour of colloids and
Publikováno v:
Review of Palaeobotany and Palynology. 156:233-247
Autor:
John R. Rowley, Marta A. Morbelli
Publikováno v:
Review of Palaeobotany and Palynology. 156:157-164
This article is a review of research and accumulated information about connective structures between, respectively, microspores in the locular space in anthers of angiospermis and the spores in the megasporangia of Lycophyta, as well as a comparison
Publikováno v:
Taiwania, Vol 54, Iss 2, Pp 101-112 (2009)
The exine of mature pollen grains of Rhoiptelea chiliantha was studied. The size of the pollen grains is about 23 by 27 μm. They are tricolporate with short colpi that are 1-2 μm wide and 10-12 long. The spinules of Rhoiptelea are similar in form a
Autor:
Björn Walles, John R. Rowley
Publikováno v:
Nordic Journal of Botany. 5:241-254
Tapetal cells of Pinus sylvesiris L. underwent one hypersecretory cycle during early pachytene and entered a second cycle by the time of mid pachytene in microspore mother cells. Initially in each cycle tapetal cells became papillaform then dome-shap
Autor:
John R. Rowley, Björn Walles
Publikováno v:
Nordic Journal of Botany. 5:255-271