玉米双单倍体株系抗枯萎病茎秆腐病的年互作基因型及加性和上位基因效应。

IF 2 3区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Journal of Applied Genetics Pub Date : 2025-01-14 DOI:10.1007/s13353-025-00938-8
Jan Bocianowski, Kamila Nowosad, Dariusz Zalewski, Agata Kaczmarek-Pieńczewska
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引用次数: 0

摘要

镰刀菌茎腐病是降低玉米籽粒质量的主要因素,并导致严重的产量损失,根据感染程度和天气条件的不同,产量损失从20%到100%不等。了解其遗传机制是提高粮食品质和最终产量的关键。在波兰下西里西亚省北部进行了为期10年(2013-2022)的26个双单倍体(DH)玉米品系试验。该研究评估了对枯萎病的抗性。目的是利用加性主效应和乘法相互作用(AMMI)模型评估玉米DH系对枯萎病抗性的基因型-年相互作用,选择在所有年份测试中稳定且对特定环境条件具有特异性的DH系,并评估加性和epistatic效应。AMMI结果表明,基因型、年份及其互作对镰刀菌茎秆腐病抗性有显著影响。由于KN16品系具有优异的稳定性和对镰刀菌茎腐病的高平均抗性,因此建议将其纳入育种计划的进一步研究中。在每年的研究中,加性基因作用效应的估计具有统计学意义。在所有十年的研究中,对镰刀菌茎秆腐病抗性的上位性(加性相互作用的总加性)效应的估计也具有统计学意义。只有2013年的上位效应为正(0.168)。这些结果表明,在抗镰刀菌茎腐病方面取得生物学进展应该是当前玉米育种计划的一个重要重点。
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Genotype by year interaction and additive and epistasis gene effects for Fusarium stalk rot resistance in doubled haploid lines of maize (Zea mays L.).

Fusarium stalk rot is the main factor reducing the quality of maize grain and leads to significant yield losses, which that ranges from 20 to 100%, depending on the degree of infection and weather conditions. Understanding its genetic mechanism is key to improving grain quality and ultimate yield. An experiment with 26 doubled haploid (DH) lines of maize was conducted in the northern part of the Lower Silesia Province in Poland over a ten-year period (2013-2022). The study assessed resistance to Fusarium stalk rot. The objectives were to evaluate genotype-year interactions for resistance to Fusarium stalk rot in maize DH lines using the additive main effects and multiplicative interaction (AMMI) model, to select DH lines that are stable across all years of testing and specific to particular environmental conditions, and to estimate additive and epistatic effects. AMMI results demonstrated a significant effect of genotype, year, and their interaction on Fusarium stalk rot resistance. The KN16 line is recommended for inclusion in further research within the breeding program due to its excellent stability and high average resistance to Fusarium stalk rot. Estimates of additive gene action effects were statistically significant in each year of the study. Estimates of epistasis (total additive by additive interaction) effects for Fusarium stalk rot resistance were also statistically significant in all ten years of the study. Only in 2013 was the epistasis effect positive (0.168). These results indicate that achieving biological advances in resistance to Fusarium stalk rot should be an important focus of ongoing maize breeding programs.

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来源期刊
Journal of Applied Genetics
Journal of Applied Genetics 生物-生物工程与应用微生物
CiteScore
4.30
自引率
4.20%
发文量
62
审稿时长
6-12 weeks
期刊介绍: The Journal of Applied Genetics is an international journal on genetics and genomics. It publishes peer-reviewed original papers, short communications (including case reports) and review articles focused on the research of applicative aspects of plant, human, animal and microbial genetics and genomics.
期刊最新文献
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