A. 1970. The "callose stage" of the generative cells in pollen grains. - Grana 10: 21-30.Gorska-Brylass, A. (1986): The `callose' stage of the generative cells in pollen grains. Grana 10: 21-30.GORSKA-BRYLASS, A. (1970). The 'callose stage' of the generative cells in pollen ...
Dynamics of the DNA Content in the Generative and Vegetative Cells of Pollen Grain in Species with Different Type of Male GametophyteBugara A. MReznikova S. AEgorova N. A
In dioecious plants parthenogenesis is associated with the absence or extreme rarity of male plants; in monoecious plants it is associated with degeneration of male flowers and absent or sterile pollen. As in animal parthenogenesis, generative, or haploid, parthenogenesis is distinguished from somatic...
The generative nucleus then divides again to produce two sperms. These nuclei are generally not separated by cell walls, but at this stage the outer wall of the spore becomes thickened and distinctively patterned—a stage typical of the mature male gametophyte, the pollen grain. See Flower, ...
Southworth D, Salvatici P, Cresti M (1994) Freeze fracture of membranes at the interface between vegetative and generative cell in Amaryllis pollen. Int J Plant Sci 155: 538–544Southworth, D., Salvatici, P. and Cresti, M. (1994). Freeze Fracture of Membranes at the Interface between ...
Michael W. Hess,Irene Mittermann,Christian Luschnig,Rudolf Valenta.Histochemistry and Cell Biology . 1995 (6)Hess MW , Mittermann I , Luschnig C , Valenta R ( 1995 ). Immunocytochemical localisation of actin and profilin in the generative cell of angiosperm pollen: TEM studies on high-...
Introduction. 1. Male Gametogenesis; Development and Structure of Sperm; D. Southworth, S.C. Russell. 2. Sperm and Generative Cell; Isolation and Manipulation; D. Southworth. 3. Pollen Germination and Pollen Tube Growth; Tip Growth Mechanism in Sexual Plant Reproduction; A. Moscatelli, M. Cres...
The stamen is the male part of a flower. In a flower diagram, stamen are located on both sides of the pistil. The stamen consists of two parts: Anther: The anther is the head of the stamen. It produces pollen. Filament:The filament is the stalk attached to the flower that holds the...
What part of the plant does reproduction take place in? Does a female plant produce a female plant when it undergoes asexual reproduction? In the gymnosperm pollen grain, which cell eventually produces the sperm? a. prothallial b. generative c. tube Which plant structure is the dominant...
Cell, October 2020. Octopuses have... In Search of a Vaccine for COVID-19 01 November 2020 | Aras Konjhodzic | Issue 138 (Nov - Dec 2020) It has been over half a year since Covid-19 swept across the world and forced many countries into quarantine. Hopes of a quick resolution of...