Results 321 to 330 of about 76,851 (355)

Pollen Tube Chemotropism

1973
The pollen tube of flowering plants may grow through as much as 50 cm of the stylar tissue, enter the micropyle of an ovule and then discharge from its tip two non-motile sperm cells in the immediate vicinity of an unfertilized egg. This review is concerned with the factors that direct the pollen tube to the egg.
openaire   +1 more source

STAINING IMBEDDED POLLEN TUBES

Canadian Journal of Plant Science, 1973
not available
C. G. CAMPBELL, S. H. NELSON
openaire   +1 more source

Female gametophyte-controlled pollen tube guidance

Biochemical Society Transactions, 2010
During the evolution of flowering plants, their sperm cells have lost mobility and are transported from the stigma to the female gametophyte via the pollen tube to achieve double fertilization. Pollen tube growth and guidance is largely governed by the maternal sporophytic tissues of the stigma, style and ovule.
Mihaela-Luiza, Márton, Thomas, Dresselhaus   +1 more
openaire   +2 more sources

Pollen Germination and Pollen-Tube Growth

1987
Publisher Summary Pollen germination and pollen-tube growth events when viewed either in culture or in the style are considered as biochemically, physiologically, and structurally complex. The various processes involved are each independent in some measure, but still all are interactive—namely, the successful attainment of the delivery of two male ...
openaire   +1 more source

Culture of Pollen Tubes for Chromosomal Analysis at the Pollen Tube Division

Stain Technology, 1953
It is possible to grow pollen tubes routinely for cytological analysis of nuclei at the pollen tube division. Pollen has been grown successfully after temperature, pressure, gas, moisture, and radiation treatments. The technic for growing Tradescantia pollen is described, but any method is satisfactory which ensures that: (a) the pollen is kept dry ...
openaire   +2 more sources

Cotton Transformation via Pollen Tube Pathway

2012
Although many gene transfer methods have been employed for successfully obtaining transgenic cotton, the major constraint in cotton improvement is the limitation of genotype because the majority of transgenic methods require plant regeneration from a single transformed cell which is limited by cotton tissue culture.
Min, Wang, Baohong, Zhang, Qinglian, Wang   +2 more
openaire   +2 more sources

Directed Evolution: Methodologies and Applications

Chemical Reviews, 2021
Yajie Wang, Pu Xue, Mingfeng Cao
exaly  

A receptor–channel trio conducts Ca2+ signalling for pollen tube reception

Nature, 2022
Qi-Fei Gao, Chao Wang, Legong Li
exaly  

Human neural tube morphogenesis in vitro by geometric constraints

Nature, 2021
Eyal Karzbrun, Stella M K Glasauer, Yofiel Wyle   +2 more
exaly  

Tip-localized receptors control pollen tube growth and LURE sensing in Arabidopsis

Nature, 2016
Hidenori Takeuchi, Tetsuya Higashiyama
exaly