First interspecific cross between carnation and Sweet William species of Dianthus was made by:
A) Thomas Fairchild
B) Andrew Knight
C) Vilmorin
D) Koelreuter
The first intergeneric cross between bread wheat and Rye was made by:
A) Koelreuter
B) Andrew Knight
C) Rimpu
D) Muntzing
The first intergeneric cross between radish and cabbage was made by:
A) Vavilov
B) Je Karpechenko
C) Richey
D) Rimpu
Distant hybridization is associated with:
A) Cross incompatibility
B) Hybrid inviability
C) Hybrid sterility
D) All of the above
In cotton, a cross between G. arboreum and G. herbaceum is:
A) Incompatible
B) Fully fertile
C) Partially fertile
D) Sterile
In Brassica, a cross between Brassica oleracea and B. nigra is:
A) Fully fertile
B) Partially fertile
C) Sterile
D) Incompatible
Brassica juncea is an amphidiploid between:
A) B. nigra and B. oleracea
B) B. nigra and B. campestris
C) B. oleracea and B. campestris
D) None of the above
In tobacco, a cross between Nicotiana sylvestris and N. tomentosa is:
A) Partially fertile
B) Fully fertile
C) Incompatible
D) Sterile
In wheat, an interspecific cross between Triticum aestivum and T. compactum is:
A) Partially fertile
B) Fully fertile
C) Sterile
D) Incompatible
In oat, an interspecific cross between Avena sativa and A. byzantina is:
A) Incompatible
B) Fully fertile
C) Sterile
D) Partially fertile

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