MTN1-2 genes encode 5′-methylthioadenosine (MTA) nucleosidase68, and double mutant mtn1-1 mtn2-1 flowers in Arabidopsis have indehiscent anthers and malformed pollen grains69. Double mutants also affected carpels and ovules, although the structures were aberrant but not necessarily non-...
In this paper, a new foldable structure has been studied and designed drawing inspiration from the structure of a pollen grain of angiosperm. This structure is made by two materials: a more rigid upper part which works only in compression and a less rigid lower part which undergoes tensile ...
Clarke E, Steer MW (1983) Cytoplasmic structure of germinated and ungerminated pollen grains of Tradescantia virginiana . Caryologia 36:299–305Clark , E., Steer , M. W., 1983: Cytoplasmic structure of germinated and ungerminated pollen grains of Tradescantia paludosa. — Caryologia 36 : 299–...
HUANG H, HUANG G. Extraction, separation, modification, structural characterization, and antioxidant activity of plant polysaccharides[J]. Chem Biol Drug Des,2020,96(5):1209−1222.doi:10.1111/cbdd.13794 [3] KONG F, CHEN T, LI X, et al. The current application and future prospects ofAstrag...
However, the present results sug- gested that the observed high-paternity correlation within fruits was more likely due to the transfer of multiple pollen grains via one pollinator visit rather than a short distance pollen dispersal, which would imply equal probabilities of multiple paternity among ...
Some aspects of pollen cytology at dispersal were studied in 12 species of gymnosperms. The pollen grains differed in: 1. volume and cell number; 2. polarization of external structure and internal cell components; 3. wall thickness, especially of the intine, and the resulting percentage of cel...
- (1916): Sur une méthode permettant de colorer dans la cellule végétale les grains d'amidon au sein des mitochondries. Ibid. 79. - (1917): Observations vitales sur le chondriome de la fleur de Tulipe. C. r. Acad. Sci. 164. - (1920): Sur l'évolution du chondriome dans la ...
Beside the pistil, the hermaphroditic flower has three stamens with numerous pollen grains in pollen loculi. The monoporate and heteropolar pollen grains have a porus located at the distal pole. When observed under the confocal microscope (CLSM), D. antarctica microspores and pollen grains packed...
SUMMARYThe exine of the S3S4genotype pollen grains ofO. organensisis furnished with beaded viscin threads as an efficient device for their transport by pollinating agents. The sexine structure is expedient for absorption of water and stigmatic exudate. The vegetative cell cytoplasm has the pertinent...
A. 1995. Structure of the apertural sporoderm of pollen grains in Euphorbia and Chamaesyce (Euphorbiaceae). - Plant Syst. Evol. 197: 111 - 122.Suarez-Cervera M, Marquez J, Martin J, Molero J, Seoane-Camba JA (1995) Structure of the apertural sporoderm of pollen grains in Euphorbia ...