Safflower (Carthamlls tinctorills) grafted on sunflower (Helianthlls annlllls) on pollination
with sunflower pollen gave three seeds out of which one developed into a plant. Like
safflower, the pollen mother cells of hybrid plant formed 1211 separating regularly. It has
normal pollen and seed fertility. The putative hybrid plant resembled mother plant
(safflower) for most of the morphological traits except that it has a few bifurcated and less
spiny leaves, slight pubescence and reddish tinge on white stem and relatively taller than
either of the parent. However, none of these new traits could be transmitted in the F2. The
normal diploid safflower plant appeared in the safflower X sunflower hybrid may be due
to diploidization of egg nucleus giving rise to parthenogenetic diploid embryo.
Keywords: Carthamus tinctorius, Helianthus annuus, wide hybridization, grafting, parthenogenetic diploidy.
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
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