Deletion Mutations of the Self-incompatibility (S) Locus Induced by Gamma Irradiation in a Wild Diploid Species of Sweet Potato, Ipomoea trifida
ISSN | 00213551 |
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NII recode ID (NCID) | AA0068709X |
Gamma irradiation was used to induce mutations affecting self-incompatibility (SI) in diploid Ipomoea trifida. Plants (S1 homozygote) with developing flower buds were exposed with gamma rays of 10 and 20 Gy. Mature pollen from the irradiated plants was used for crosses with S3 and S10 homozygotes. By pollination test and Southern blot analysis of the M1 progenies, we screened 2 mutant plants carrying a deletion of the S locus derived from irradiated pollen, designated ΔS1. In both mutant alleles, the deleted region was found to exceed a genetic distance of 12 cM around the S locus. Progeny test of both mutant plants showed that neither female nor male gametes carrying the ΔS1 allele were fertile probably due to the lethal effect of the chromosomal deletion spanning the S locus.
Date of issued | |
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Creator | KAKEDA Katsuyuki TSUTSUMI Makiko KOWYAMA Yasuo |
Subject |
Convolvulaceae S gene sporophytic self-incompatibility |
Publisher | Japan International Research Center for Agricultural Sciences |
Available Online | |
NII resource type vocabulary | Journal Article |
Volume | 44 |
Issue | 2 |
spage | 127 |
epage | 131 |
DOI | 10.6090/jarq.44.127 |
Rights | Japan International Research Center for Agricultural Sciences |
Language | eng |