Abstract:
Jugal is a natural floral organ mutant of rice (Oryza
sativacv.Jugal)thatnaturallyproducesmultipleseedsper
grain, possess more than one carpel in most of itsflowers.
However,theunderneathmechanismofmultiple carpelis
yetnotclearlyunderstood.Tounderstandthegeneticbasis
of the multiple carpels of Jugal plants, a reciprocal cross
wasperformedbetweenthismutantlinewithanormalrice.
CrossesbetweenmaleJugalandfemaleIR36producedviable
seeds, whereas, crosses between female Jugal plants and
male IR36 plants did not produce any seedsin F, progeny
indicatingthatJugalcarpelspossessincompatibilitybarriers.