Results 21 to 30 of about 2,785,401 (324)
Distinct from the motile flagellated sperms in animals and early land plants, the non-motile sperm cells of flowering plants are carried in the pollen grain to the female pistil.
Shu-yan Chen +5 more
semanticscholar +1 more source
Male–Female Crosstalk during Pollen Germination, Tube Growth and Guidance, and Double Fertilization
Thomas Dresselhaus +1 more
exaly +2 more sources
Fruit growth and development in apple: a molecular, genomics and epigenetics perspective
Fruit growth and development are physiological processes controlled by several internal and external factors. This complex regulatory mechanism comprises a series of events occurring in a chronological order over a growing season.
Khalil R. Jahed, Peter M. Hirst
doaj +1 more source
Removal of the endoplasma membrane upon sperm cell activation after pollen tube discharge
In pollen and pollen tubes, immotile sperm cells are enclosed by an inner vegetative plasma membrane (IVPM), a single endomembrane originating from the vegetative-cell plasma membrane.
Naoya Sugi +5 more
doaj +1 more source
Gamete membrane dynamics during double fertilization in Arabidopsis. [PDF]
Igawa T, Mori T.
europepmc +2 more sources
Central Cell in Flowering Plants: Specification, Signaling, and Evolution
During the reproduction of animals and lower plants, one sperm cell usually outcompetes the rivals to fertilize a single egg cell. But in flowering plants, two sperm cells fertilize the two adjacent dimorphic female gametes, the egg and central cell ...
Hong-Ju Li, Wei-Cai Yang, Wei-Cai Yang
doaj +1 more source
The long-term use of chemical N fertilization may have a negative impact upon soil fertility and quality. On the contrary, organic fertilization is considered a sustainable development agricultural strategy.
Lei Sun +4 more
doaj +1 more source
The irrigation systems of the Ebro valley can lead to high N2O emissions. The effects that crop diversification, such as double cropping in combination with conservation tillage and different N fertilizer ratios, has on soil N2O emissions have not been ...
Jesús Fernández-Ortega +2 more
semanticscholar +1 more source
Poles Apart: Monosporic, Bisporic, and Tetrasporic Embryo Sacs Revisited
Bisporic embryo sacs contain nuclei derived from two members of a megaspore tetrad whereas tetrasporic embryo sacs contain nuclei derived from all four members of a tetrad.
David Haig
doaj +1 more source
Fertilization capacity with rainbow trout DNA-damaged sperm and embryo developmental success [PDF]
Mammalian spermatozoa undergo a strong selection process along the female tract to guarantee fertilization by good quality cells, but risks of fertilization with DNA-damaged spermatozoa have been reported.
Ahmadi +31 more
core +1 more source

