INCOMPLETE ANTHOCYANINLESS MUTATIONS IN CAPSICUM ANNUUM L. X C. CHINENSE JACQ. HYBRIDS

摘要

Uniform colour mutations were found in the segregating progenies of interspecies hybrids C. annuum x C. chineme after one backcross with C. annuum. Two fully anthocyanin C.annuum forms, cv. 'Zulu' and f nigrum Smith (genes A, Mo-A) were used as femaleparents. They were pollinated respectively with C.chineme accessions No 23 and PI 315008 which differ in purple coloration, PI 315008 possesses considerable anthocyanin amount in stem and fruits. No 23 has anthocyaninless stem, sometimes with anthocyanin shades on the nodes and light-green fruits Uniform white-greenish flowers, purple stamens and stigma are presented in both chineme forms. F_1 plants were backcrossed once with anthocyaninless C. annuum cv. 'Albena' or line Vibo (gene al). Single plantswere found in the segregating progenies of BC_1 of both hybrid combinations with anthocyaninless light green stems and foliage, flowers with very pale purplish-cream petals, purple stamens and stigma and light purple ftuits on ivory background Separateplants with anthocyaninless olive green stem and leaves, flowers with purplish petals, filaments, stigma, blue anthers and anthocyanin-spotted olive green immature fruits were also observed in C. annuum x C. chinense PI 315008 hybrid. Their progenies stably maintained mutant phenotype after self-pollination Possible gene control of incomplete anthocyaninless mutations is discussed.