Young, P. A.
The radiation-induced mutant for entire (broad) leaflets (G2052) was described in TGC 8:40 and TGC 9:51, 1959. It was crossed with a gene tester (G1O77) homozygous for the e-allele (broad leaflets), which had been received from J. W. McArthur (Texas Agr. Exp. Sta. Bul. 698). The 267 F1-plants from the 7 reciprocal crosses of G2052 X G1077 were all identical, having typical broad leaflets like those of both parents. The adjective "broad". is preferred instead of "entire" because the leaflets are nearly always distinctively broad and some of them may have one or more usually short pointed lobes per leaflet. Seeds from the F1-generation of two of these crosses were tested to learn whether any segregation might occur in the F2-generation. The 76 plants of this F2-generation also had the broad leaflets on all of the plants, like tho-e of their parents. Thus the F and F2-generations showed only plants with broad leaflets. This indicates that the broad leaflets of the radiation-induced mutant tomato (G2052) were due to the same allele (e) that occurs in the gene tester (G1O77).