Mapping chromosomal regions associated with anther indehiscence with exerted stigmas in CRI-48 and Jasmine 85 cross of rice (Oryza sativa L)
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Date
2021-03-13
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd.
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 BC1F1 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.
Description
Heliyon, Volume 7, Issue 3
Keywords
Outcrossing, Genetic mapping, Hybrid rice seed production, SNP markers, Pleiotropic gene action, Isaac Kofi Bimpong, Richard Akromah, Vernon Edward Gracen, Samuel Kwame Offei, Eric Yirenkyi Danquah, Agriculture, University of Ghana
Citation
https://doi.org/10.1016/j.heliyon.2021.e06483