CROSSABILITY AND ENDOSPERM DEVELOPMENT IN RECIPROCAL HYBRIDS OF OCTOPLOID TRITICALE WITH DURUM WHEAT

Published on Oct 01, 2019 03:18 AM

Four newly synthesized octoploid triticales were crossed with three durum wheats
reciprocally to study the crossability and endosperm development. Crossability was
expressed as % seed-set and data on endosperm development were recorded at different
days after pollination (DAP). Overall crossability was relatively higher when durum
wheat was used as the maternal parent. Development of endosperm was normal in
octoploid triticale x durum wheat crosses. However, in reciprocals endosperm
degenerated between 16-19 DAP. Pronounced disturbance in embryo: endosperm
chromosome ratio and the tetraploid cytoplasmic background of hybrids seem to be
the probable causes of the degeneration of endosperm in durum wheat x octoploid
triticale hybrids.
 

Keywords: Durum wheat, octoploid triticale, crossability, endosperm development, cytoplasmic effect.

Info

Year: 1999
Volume: 59
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

R. K. KAPILA AND G. S. SE1HI info_circle

Download PDF