๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Unusual behaviour of growing pollen tubes in the styles and ovules ofSpinacia oleraceaL.

โœ Scribed by M. S. Ramanna; M. C. A. Mutsaerts

Publisher
Springer
Year
1971
Tongue
English
Weight
349 KB
Volume
20
Category
Article
ISSN
0014-2336

No coin nor oath required. For personal study only.

โœฆ Synopsis

Pollen tubes of spinach, while growing in the styles, produce branches . In the ovules and the surrounding tissue, at later stages, they grow like fungus mycelium and ramify in all directions . Haustoria-like structures are produced from the pollen tubes near the micropyle of the ovule . These structures penetrate into integuments, nucellus and other tissues and produce branches . Several pollen tubes enter a single ovule and appear to bring about polyspermy . Though the functional significance of some of these phenomena is still speculative, it is likely that the persisting pollen tubes and haustoria may be responsible for the nourishment of the growing embryo .

๐Ÿ“œ SIMILAR VOLUMES

The behaviour of pollen tubes and the de
The behaviour of pollen tubes and the developmental process of ovules inPelargonium
โœ Fumika Yano; S. Tokumasu; M. Kato ๐Ÿ“‚ Article ๐Ÿ“… 1975 ๐Ÿ› Springer ๐ŸŒ English โš– 607 KB

The ovary of Pelargonium species is composed of 5 carpels, each of which contains 2 ovules. Usually, one of the two ovules develops and the other shrivels. The developed ovule is either on the upper side or on the lower side in the carpel. Intervarietal or interspecific difference was observed with