Sperm dimorphism in Nicotiana tabacum L.

Citation
Hq. Tian et al., Sperm dimorphism in Nicotiana tabacum L., SEX PLANT R, 14(1-2), 2001, pp. 123-125
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences","Animal & Plant Sciences
Journal title
SEXUAL PLANT REPRODUCTION
ISSN journal
0934-0882 → ACNP
Volume
14
Issue
1-2
Year of publication
2001
Pages
123 - 125
Database
ISI
SICI code
0934-0882(200109)14:1-2<123:SDINTL>2.0.ZU;2-R
Abstract
Sperm cells of tobacco have been intensively studied as examples of isomorp hic gametes in which major cellular and organellar parameters remain statis tically indistinguishable in the two sperm cells. An examination of sperm c ells late in maturation, however, displays that the sperm cell associated w ith the vegetative nucleus becomes statistically significantly smaller than the other sperm cell in tobacco. If late divergence occurs in the two sper ms of other angiosperms, sperm dimorphism may be more prevalent than has pr eviously been assumed and dimorphism may have a major influence on the patt ern of double fertilization.