nucellus
英 [nu:'seləs] 美 [nu'seləs]

n.

珠心；

变形

复数：nucelli

英英释义

nucellus[ nju:'seləs, 'nju:seləs ]

• n.central part of a plant ovule; contains the embryo sac

双语例句

用作名词(n.)

1. The nucellus is usually degraded and absorbed as the endosperm develops.
   珠心通常在胚乳发育时被分解和吸收。
2. The region of an ovule that is opposite the micropyle,where the integuments and nucellus are joined.
   合点珠孔对面的胚珠内结合珠被和珠心的一个区域。

权威例句

The Nucellus and Chalaza in monocotyledons: Structure and systematics
The composition and ultrastructure of the nucellus in cotton 1
The nucellus degenerates by a process of programmed cell death during the early stages of wheat grain development
Self-incompatibility in Acacia retinodes: Site of pollen-tube arrest is the nucellus
Germination-related genes encoding proteolytic enzymes are expressed in the nucellus of developing wheat grains
Isolation of molecular markers from the barley endosperm coenocyte and the surrounding nucellus cell layers.
Nitric oxide and hydrogen peroxide involvement during programmed cell death of Sechium edule nucellus.
The MADS29 transcription factor regulates the degradation of the nucellus and the nucellar projection during rice seed development.
Ricinosomes and endosperm transfer cell structure in programmed cell death of the nucellus during Ricinus seed development
BIOSYNTHESIS OF GIBBERELLINS. I. THE BIOSYNTHESIS OF (-)-KAUREN-19-OL, AND TRANS-GERANYLGERANIOL IN ENDOSPERM NUCELLUS OF ECHINOCYST...