Probing the floral developmental stages, bisexuality and sex reversions in castor (Ricinus communis L.).

ABSTRACT: Castor (Ricinus communis L) is an ideal model species for sex mechanism studies in monoecious angiosperms, due to wide variations in sex expression. Sex reversion to monoecy in pistillate lines, along with labile sex expression, negatively influences hybrid seed purity. The study focuses on understanding the mechanisms of unisexual flower development, sex reversions and sex variations in castor, using various genotypes with distinct sex expression pattern. Male and female flowers had 8 and 12 developmental stages respectively, were morphologically similar till stage 4, with an intermediate bisexual state and were intermediate between type 1 and type 2 flowers. Pistil abortion was earlier than stamen inhibition. Sex alterations occurred at floral and inflorescence level. While sex-reversion

SUBMITTER: Parvathy ST 

PROVIDER: S-EPMC7895920 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature