V. Rezende, R. Vencovsky, F. Enrique, Ninamango Cárdenas, H. P. D. Silva, E. Bearzoti, Luís Eduardo, Aranha Camargo
{"title":"Mixed inheritance model for resistance to anthracnose leaf blight in maize","authors":"V. Rezende, R. Vencovsky, F. Enrique, Ninamango Cárdenas, H. P. D. Silva, E. Bearzoti, Luís Eduardo, Aranha Camargo","doi":"10.12702/1984-7033.V04N01A19","DOIUrl":null,"url":null,"abstract":"A separation of the effects of major genes from effects of polygenes is important to understand genetic inheritance of quantitative traits and predict the segregation of a crossing. The inheritance mode of resistance to anthracnose leaf bligh t (ALB) caused by C. graminicola was evaluated by a mixed model. P 1, P2, F1, F2, BC1, and BC2 generations derived from four crossings between tropical maize inbred lines were used. Maximum likelihood was used to choose the best fitting inheritance model and to estimate genetic parameters. The mixed model indicated that the resistance to ALB was controlled by a major gene in all crosses and trials, and by polygenes in at least one trial. Additive and dominance effects were important for both major gene and polygenes. Both effects of the major genes were negative, indicating their contribution to disease resistance, while both effects of the polygenes were positive or negative, reflecting differences in the genetic background among inbred li nes.","PeriodicalId":49085,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"16 1","pages":"115-122"},"PeriodicalIF":1.3000,"publicationDate":"2004-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"19","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crop Breeding and Applied Biotechnology","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.12702/1984-7033.V04N01A19","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 19
Abstract
A separation of the effects of major genes from effects of polygenes is important to understand genetic inheritance of quantitative traits and predict the segregation of a crossing. The inheritance mode of resistance to anthracnose leaf bligh t (ALB) caused by C. graminicola was evaluated by a mixed model. P 1, P2, F1, F2, BC1, and BC2 generations derived from four crossings between tropical maize inbred lines were used. Maximum likelihood was used to choose the best fitting inheritance model and to estimate genetic parameters. The mixed model indicated that the resistance to ALB was controlled by a major gene in all crosses and trials, and by polygenes in at least one trial. Additive and dominance effects were important for both major gene and polygenes. Both effects of the major genes were negative, indicating their contribution to disease resistance, while both effects of the polygenes were positive or negative, reflecting differences in the genetic background among inbred li nes.
期刊介绍：
The CBAB – CROP BREEDING AND APPLIED BIOTECHNOLOGY (ISSN 1984-7033) – is the official quarterly journal of the Brazilian Society of Plant Breeding, abbreviated CROP BREED APPL BIOTECHNOL.
It publishes original scientific articles, which contribute to the scientific and technological development of plant breeding and agriculture. Articles should be to do with basic and applied research on improvement of perennial and annual plants, within the fields of genetics, conservation of germplasm, biotechnology, genomics, cytogenetics, experimental statistics, seeds, food quality, biotic and abiotic stress, and correlated areas. The article must be unpublished. Simultaneous submitting to another periodical is ruled out. Authors are held solely responsible for the opinions and ideas expressed, which do not necessarily reflect the view of the Editorial board. However, the Editorial board reserves the right to suggest or ask for any modifications required. The journal adopts the Ithenticate software for identification of plagiarism. Complete or partial reproduction of articles is permitted, provided the source is cited. All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY. All articles are published free of charge. This is an open access journal.
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