
TY  - JOUR
A1  - Williams, EG 
A1  - Kaul, V 
A1  - Rouse, JL 
A1  - Palser, BF 
T1  - Overgrowth of Pollen Tubes in Embryo Sacs of <I>Rhododendron</I> Following Interspecific Pollinations
JF  - Australian Journal of Botany
JO  - Aust. J. Bot.
Y1  - 1986
VL  - 34
IS  - 4
SP  - 413
EP  - 423
KW  - 
UR  - https://doi.org/10.1071/BT9860413 
N2  - Frequent overgrowths of pollen tubes within the embryo sac are characteristic of a number of interspecific crosses in the genus Rhododendron (Ericaceae). The combined techniques of sectioning, squashing and whole-ovule clearing have confirmed that in ovules showing this phenomenon the pollen tube fails to terminate growth and release sperms on entry into a synergid; instead it continues to grow beyond the synergid and egg cell, often filling the main body of the embryo sac with a coiled and distorted mass. Such ovules fail to develop further. The occurrence and possible causes of this error syndrome are discussed. 
ER  -

