
Chalaza - Wikipedia
The chalaza (/ k ə ˈ l eɪ z ə /; from Ancient Greek χάλαζα (khálaza) ' hailstone '; pl.: chalazas or chalazae / k ə ˈ l eɪ z i /) is a structure inside bird eggs and plant ovules. It attaches or …
The nucellus and chalaza in monocotyledons: structure and schematics ...
Apr 1, 1997 · The chalaza is the region of the ovule where the nucellus, integuments, and funicle merge, and therefore usually encompasses a vascular bundle. The interface between chalazal …
The nucellus: between cell elimination and sugar transport
In Arabidopsis, the endosperm partially eliminates the nucellus and imports sugars from the seed coat. Here, we show that the nucellus is symplasmically connected to the chalaza, the seed …
What is the Difference Between Micropyle and Chalaza
Apr 20, 2023 · The main difference between micropyle and chalaza is that a micropyle is a small opening in the outer integument of an ovule, whereas a chalaza is the base of the ovule where …
The chalaza is the region of the ovule where the nucellus, integuments, and fu- nicle merge, and therefore usually encompasses a vascular bundle. The interface between
WUSCHEL signaling functions in interregional communication …
May 1, 2002 · Ovules give rise to the gametophyte in the distal nucellus and form protective sporophytic organs from the underlying chalaza. We show that the WUSCHEL (WUS) …
Endosperm and Nucellus Develop Antagonistically in Arabidopsis …
In Arabidopsis, ovule primordia contain three functional regions: funiculus, chalaza, and nucellus (Schneitz et al., 1995). The funiculus is connected to the placenta and develops vascular …
The Nucellus and Chalaza in monocotyledons: Structure and
Proximal nucellar structures arise from a multi-layered region of the ovule and include hypostase, enlarged dermal cells and conducting passage (Zuleitungsbahn), haustoria, postaments, …
Seed tissue and nutrient partitioning, a case for the nucellus
In Arabidopsis seeds, nucellus elimination begins 2 days after flowering (DAF) and progresses in a distal–proximal fashion to achieve the loss of 50% of its cells by 8 DAF. A few layers of …
Ovule - Wikipedia
The ovule is a small structure present in the ovary. It is attached to the placenta by a stalk called a funicle. The funicle provides nourishment to the ovule. On the basis of the relative position of …