EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Endosperm and endospermal haustoria in betonica



Endosperm and endospermal haustoria in betonica



Izvestiya Akademii Nauk Gruzinskoi SSR Seriya Biologicheskaya 7(4): 327-332



In the representatives of the genus Betonica [B. grandiflora, B. osetica, B. abchazica] the structure of the embryo sac-double fertilization, the endosperm and endospermal haustoria formation were studied. The 8-nuclei embryo sac is characteristic for the Labiatae. The fertilized embryo sacs were identified by the presence of 2 generated synergids, the remains of pollen tubes, the increase of zygote dimensions and the presence in it of an additional nucleolus. After the 2nd endosperm division on the opposite ends of the embryo sac the mother nuclei of the micropylar and chalazal haustoria and the mother nucleus of the endosperm occur between them. In the coenocytic micropylar haustoria 4 nucleolar divisions in the chalazal take place. Haustorial differentiation is accomplished by the endopolyploidization of nuclei. The zygote is transferred from the micropylar end of the embryo sac, dividing in the cellular endosperm.

(PDF emailed within 1 workday: $29.90)

Accession: 005359798

Download citation: RISBibTeXText



Related references

Study of the endosperm and endospermal haustoria in Betonica L. Izvestiia Akademii nauk Gruzinskoi SSR Seriia biologicheskaia = Proceedings of the Academy of Sciences of the Georgian SSR Biological series(4): 327-332, 1981

Investigation of endospermal haustoria in Antirrhinum majus L. 1973

Study of endospermal haustoria in antirrhinum majus. Biologicheskii Zhurnal Armenii 26(8): 72-75, 1973

Cytochemical studies on the endosperm of linaria bipartita with a note on the role of endosperm haustoria. Cytologia (Tokyo) 45(1-2): 247-256, 1980

Endosperm in Euphorbiaceae and occurrence of endosperm haustoria in two species of Croton Linn. Current Sci [India] 32(11): 514-516, 1963

Study of some factors influencing formation of the endosperm and endosperm haustoria in sweet basil ocimum basilicum. Soobshcheniya Akademii Nauk Gruzinskoi SSR 80(1): 137-140, 1975

Cytochemical studies on the endosperm of Linaria bipartita (Vent.) Willd. with a note on the role of endosperm haustoria. Cytologia 45 (1 2) 247-256, 1980

Types of endosperm and endosperm haustoria and their classification. Kurtziana 6(16): 7-31, 1983

Comparative Data On The Study Of Betonica Officinalis And Betonica Grandiflora Glycosides. Farmatsevtychnyi Zhurnal 18: 51-53, 1963

Photochemical study of betonica officinalis 2 acids of the aboveground part of betonica. 1986

Phytochemical studies of Betonica officinalis. II. Acids of the aerial parts of Betonica. Khimiya Prirodnykh Soedinenii (2): 239-240, 1986

Phytochemical study of Betonica officinalis. II. Acids from the epigeal part of Betonica. Chemistry of natural compounds 22(2): 224-225, 1986

Some further observations, on the endosperm haustoria in the Cueurbltaceae. Phytomorphology [delhi] 8(1/2): 194-201, 1958

Endopolyploidy and nuclear structures in endosperm haustoria. Oesterr Bot Z 112(3): 197-262, 1965

The types of endosperm and of endospermic haustoria their classification. Kurtziana 16: 7-32, 1983