
TY  - JOUR
A1  - Pandey, KK 
A1  - Grant, JE 
A1  - Williams, EG 
T1  - Interspecific Hybridisation Between <I>Trifolium repens</I> and <I>T. uniflorum</I>
JF  - Australian Journal of Botany
JO  - Aust. J. Bot.
Y1  - 1987
VL  - 35
IS  - 2
SP  - 171
EP  - 182
KW  - 
UR  - https://doi.org/10.1071/BT9870171 
N2  - Several partially fertile hybrids (2n = 32) were produced by embryo culture from crosses of the type T. repens (2n = 32) female &#215; T. uniflorum (2n = 32) male . The reciprocal crosses, although giving better seed development in vivo, were less successful in producing viable hybrid plants. Backcrosses to both parent species and F2 hybrids were also produced. Hybrid materials were variable with respect to morphological characteristics but broadly within the expected intermediate range. Their root systems were generally coarser and deeper than that of T. repens, offering the prospect of improved resistance to beetle larvae and drought. One F1 hybrid proved to be highly self-compatible, although derived from self-incompatible parent species. Pollen fertility ranged from 0 to 58% for F1 hybrids, 0 to 13% for F2 hybrids, 0 to 84% for backcrosses to T. repens and 0 to 26% for backcrosses to T. uniflorum. Marked seasonal variations in pollen fertility were also observed. Up to two quadrivalent chromosome associations per pollen mother cell were observed at meiosis in F1 hybrids, indicating some intragenomic pairing of T. repens chromosomes. Quadrivalent associations were also observed in an F2 hybrid and three backcrosses to T. repens. 
ER  -

