Mapping chromosomal regions associated with anther indehiscence with exerted stigmas in CRI-48 and Jasmine 85 cross of rice (Oryza sativa L). Issue 3 (March 2021)

• Record Type: Journal Article
• Authors: Abebrese, Samuel Oppong; Amoah, Nana Kofi Abaka; Dartey, Paul Kofi Ayirebi; Bimpong, Isaac Kofi; Akromah, Richard; Gracen, Vernon Edward; Offei, Samuel Kwame; Danquah, Eric Yirenkyi
• Is Part Of: Heliyon. Volume 7:Issue 3(2021)
• Publication Date: 2021-03
• Subjects: Outcrossing -- Genetic mapping -- Hybrid rice seed production -- SNP markers -- Pleiotropic gene action; Research -- Periodicals; Medical sciences -- Periodicals; Natural history -- Periodicals; Social sciences -- Periodicals; Earth sciences -- Periodicals; Physical sciences -- Periodicals; 507.2
• DOI: 10.1016/j.heliyon.2021.e06483
• Languages: English
• ISSNs: 2405-8440

Abstract

Abstract: Anther indehiscence in certain wide crosses combines male sterility with stigma exertion, a phenomenon that is desirable for hybrid rice seed production. This study sought to identify chromosomal region(s) that combine anther indehiscence with exerted stigmas. A mapping population consisting of 189 BC1 F1 plants was derived from a cross between CRI-48 and Jasmine 85 and backcrossing the resulting F1 to Jasmine 85. Contrary to the three complementary genes mode of inheritance reported earlier, a single locus ( AI6-1 ) was mapped on chromosome 6 at 27.4 cM for anther indehiscence with exerted stigmas through a mixed model-based composite interval mapping (MCIM). This locus was flanked by two single nucleotide polymorphism (SNP) markers, K_ID6002884 and K_ID6003341 within a range of 23.1–28.9 cM. The allele at the locus was contributed by the CRI-48 parent which has Oryza glaberrima ancestry. This locus is suggested to control anther indehiscence and stigma exertion through pleiotropic gene action or cluster of genes. Abstract : Outcrossing, genetic mapping, hybrid rice seed production, SNP markers, pleiotropic gene action.