SELECTION FOR RESISTANCE TO AFLATOXIN FORMATION IN MAIZE THROUGH SEED INOCULATION

被引：2

作者：

DELEON, C

KITBAMROONG, C

BUANGSUWAN, D

TANBOONREK, P

机构：

[1] CIMMYT-ARMP, Bangkok

[2] Field Crops Research Institute, Bangkok, DOA

[3] Department of Plant Pathology, Bangkok, DOA

来源：

FOOD ADDITIVES AND CONTAMINANTS | 1995年 / 12卷 / 03期

关键词：

AFLATOXIN; MYCOTOXIN; DISEASE RESISTANCE; RECURRENT SELECTION;

D O I：

10.1080/02652039509374335

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The efficiency of selection for resistance to aflatoxin development caused by Aspergillus flavus L. ex Fries, in maize (Zea mays L.) grain was studied in three CIMMYT lowland tropical maize populations. Seed samples of each population were inoculated with a spore suspension of cultures of Aspergillus spp. known to produce aflatoxins. Inoculated seeds were maintained at 85% RH in plastic boxes kept at room temperature. At 50% germination, seed samples were planted in the field. At flowering time, selected plants were bulk pollinated. After three cycles of selection, gains for tolerance to aflatoxin formation and improvement for agronomic characters were evaluated. The results indicate there are differences in aflatoxin accumulation between different genotypes and cycles of selection. Populations 22 (DMR) and 28 (DMR) were the most damaged and Population 31 DMR suffered the lowest infection. The study suggests that there are differences in aflatoxin production between the maize genotypes tested. However, our results failed to show that tolerance to aflatoxin development can be accumulated through a recurrent selection breeding scheme.

引用

页码：491 / 495

页数：5

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