Combining ability of resistance to head blight caused by Fusarium culmorum (WG Smith) in the F1 of a seven parent diallel of winter wheat (Triticum aestivum L.)

被引：27

作者：

Buerstmayr, H ^{[1
]}

Lemmens, M ^{[1
]}

Berlakovich, S ^{[1
]}

Ruckenbauer, P ^{[1
]}

机构：

[1] IFA Tulln, Inst Agrobiotechnol, Dept Biotechnol Plant Protect, A-3430 Tulln, Austria

来源：

EUPHYTICA | 1999年 / 110卷 / 03期

基金：

奥地利科学基金会;

关键词：

diallel analysis; Fusarium culmorum; heterosis; resistance; scab; wheat;

D O I：

10.1023/A:1003757002052

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Fusarium head blight (FHB, scab) caused by Fusarium spp. is a widespread disease of cereals causing relevant yield and quality losses and contaminating cereal products with mycotoxins. Breeding resistant cultivars is the method of choice for controlling the disease. Resistance to FHB is a quantitative trait and is most likely governed by several genes. We present the results of an F-1 diallel analysis of FHB resistance involving six resistant and one susceptible European winter wheat genotypes of diverse origin in order to identify promising combinations for the selection of improved cultivars. Parents and F(1)s including reciprocals were evaluated for FHB resistance in an artificially inoculated field trial. Two traits were assessed: visual disease symptoms on the heads and the percentage of Fusarium damaged kernels in a harvested sample. General combining ability (GCA) and specific combining ability (SCA) effects were statistically significant for visual symptoms and kernel damage, whereas reciprocal effects were small or not significant. Heterosis for resistance was common, indicating that the parental genotypes possess different resistance genes. Selection of transgressive segregates should be feasible from such heterotic combinations.

引用

页码：199 / 206

页数：8

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