干旱区生态环境知识资源中心(Arid): Differential response of maize hybrids to field infection with Aspergillus flavus and aflatoxin accumulation in the Chaco Semi-arid region of Argentina

Arid

DOI	10.1016/j.cropro.2022.105960
	Differential response of maize hybrids to field infection with Aspergillus flavus and aflatoxin accumulation in the Chaco Semi-arid region of Argentina
	Miguel Barontini, Javier; Alaniz Zanon, Maria Silvina; Alberto Druetta, Marcelo; Ruiz Posse, Agustina Maria; Karina Torrico, Ada; del Pilar Monge, Maria; Esteban Candela, Raul; Noemi Chulze, Sofia; Gimenez Pecci, Maria de la Paz
通讯作者	Barontini, JM
来源期刊	CROP PROTECTION
ISSN	0261-2194
EISSN	1873-6904
出版年	2022
卷号	156
英文摘要	Maize is affected by Aspergillus flavus and by the contamination of its kernels with aflatoxins, of which AFB(1) is the most important. The Chaco Semi-arid is a region of Argentina in which the climate conditions increase this problem and due to the use of resistant cultivars is the best available tactic to reduce aflatoxin accumulation, we analyzed six hybrids against artificial inoculation with native aflatoxin-producing isolates of A. flavus. A multifactorial experiment was conducted in three complete randomized blocks, under Inoculated and Non-Inoculated treatment, in two locations and during two growing seasons, in which yield, kernel infection, and AFB(1) accumulation (using HPLC) were evaluated. P2089VYHR was outstanding during 2018/19 with 11,089 kg ha(-1), coinciding with the growing season with the highest rainfall and 4% decrease in yield (395 kg ha(-1)) was observed between treatments. No yield differences were observed in the hybrids between localities, or in the hybrid x treatment interaction. The level of infection by A. flavus showed differences between localities and growing seasons but not between hybrids. The Inoculated treatment registered kernel infections above 50%, while natural infection was 35% during 2019/20, associated with rainfall below crop requirements during the flowering period. The AFB(1) accumulation analysis identified P2089VYHR and P1366VYHR without AFB(1) accumulation. Yield correlated negatively with the percentage of kernel infection, but not with AFB(1) accumulation, while a positive correlation was observed between these last two parameters. The pathogen causes a decrease in yield in the region and there are hybrids that are resistant to AFB(1).
英文关键词	Maize (Zea mays) Aspergillus flavus Aflatoxin accumulation Toxigenic isolates
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000820290600015
WOS关键词	INBRED LINES ; CORN ; RESISTANCE ; YIELD ; CONTAMINATION ; INJURY ; IDENTIFICATION ; GENOTYPES ; FUNGAL ; TOXINS
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392198
推荐引用方式 GB/T 7714	Miguel Barontini, Javier,Alaniz Zanon, Maria Silvina,Alberto Druetta, Marcelo,et al. Differential response of maize hybrids to field infection with Aspergillus flavus and aflatoxin accumulation in the Chaco Semi-arid region of Argentina[J],2022,156.
APA	Miguel Barontini, Javier.,Alaniz Zanon, Maria Silvina.,Alberto Druetta, Marcelo.,Ruiz Posse, Agustina Maria.,Karina Torrico, Ada.,...&Gimenez Pecci, Maria de la Paz.(2022).Differential response of maize hybrids to field infection with Aspergillus flavus and aflatoxin accumulation in the Chaco Semi-arid region of Argentina.CROP PROTECTION,156.
MLA	Miguel Barontini, Javier,et al."Differential response of maize hybrids to field infection with Aspergillus flavus and aflatoxin accumulation in the Chaco Semi-arid region of Argentina".CROP PROTECTION 156(2022).