In a breeding program for incorporating cyst-nernatode resistance of the green gram into the adzuki bean, an interspecific cross between a cultivar of the green gram and a semi-wild relatrve of the adzuki bean, in endemic name “Bakaso” was made recrprocally. From the cross, using the green gram as a female plant, seven F
1 hybrid plantlets were obtained by means of embryo culture technique, and four plants grew and developed in pod bearing stage, but they were entirely sterile, and produced no seed.
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