Complementary Factors in Barley Giving a Lethal Progeny

Wiebe, G. A.

doi:10.1093/oxfordjournals.jhered.a103943

Cited by 31 publications

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“…It is generally accepted that hybrid sterility should be due to complex epistatic interaction at multiple loci (Li et al 1997a;Wang et al 1998). On the other hand, a simple genetic basis has been assumed in many cases of hybrid weakness, such as two complementary genes in wheat (Caldwell and Compton 1943), in barley (Wiebe 1934) and in rice (Oka 1957;Fukuoka et al 1998a;Sato and Morishima 1988).…”

Section: Discussionmentioning

confidence: 99%

Genetic basis of hybrid breakdown in a Japonica/Indica cross of rice, Oryza sativa L.

Kubo

Yoshimura

2002

Theor Appl Genet

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Reproductive barriers often arise in hybrid progeny between two varietal groups of Asian cultivated rice ( Oryza sativa L.), Japonica and Indica. Hybrid breakdown showing poor growth habit, and complete sterility was found in the backcrossed progeny derived from a cross between a Japonica variety, Asominori, and an Indica variety, IR24. We employed RFLP analysis in the segregating population to study the genetic basis underlying hybrid breakdown. It was found that the hybrid breakdown is caused by a set of two nuclear genes, which were symbolized as hwe1 and hwe2. The parental varieties, Asominori and IR24, carry hwe1(+) hwe1(+) hwe2hwe2 and hwe1hwe1hwe2(+) hwe2(+) genotypes, respectively, whereas the progenies that showed a weakness performance carry the double recessive genotype ( hwe1hwe1hwe2hwe2). Abnormality was not observed in the progenies that carry the other genotypes, indicating that a single dominant allele at either locus is necessary for normal growth. Based on linkage analysis with RFLP markers, the hwe1 locus was located between RFLP markers R1869 and S1437 on chromosome 12 and the hwe2 locus was located between R3192 and C1211 on chromosome 1. The genetic basis was reconfirmed using near-isogenic lines carrying the genes with reciprocal genetic backgrounds. The present study provides clear evidence, viewed by previous workers, that hybrid breakdown is attributed to complementary genes from both parents.

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Section: Discussionmentioning

confidence: 99%

Genetic basis of hybrid breakdown in a Japonica/Indica cross of rice, Oryza sativa L.

Kubo

Yoshimura

2002

Theor Appl Genet

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“…In the common wheat, F1 necrosis and F1 chlorosis were investigated by many workers (Caldwell and Compton 1943;Hermsen 1963aHermsen ,b,1966Tsunewaki and Kihara 1962;Tsunewaki 1970;Zeven 1978) since the first report of chlorosis called "firing" by Mcmillan (1936). In barley, three kinds of destructive phenomena were observed in F1 plants; they are lethal (wiebe 1934;Takahashi et al 1970), chlorosis (Takahashi and Hayashi 1972), and weakness (Fukuyama 1980).…”

Section: Introductionmentioning

confidence: 99%

Distribution of the complementary genes causing F1 weakness in the common rice and its wild relatives. I. L-2-a gene in Asian native cultivars.

Sato

Hayashi

1983

The Japanese journal of genetics

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“…In plants, at least, it has been shown that reproductive isolation can be achieved by interactions at a very small number ofloci. In cotton, only a single locus is involved (Stephens, 1950), while single pairs of complementary genes leading to isolation have been found in a number ofcultivated plants (see Oka, 1974;Hermsen, 1963;Gerstel, 1954;Wiebe, 1934;Sano and Kita, 1978;Saunders, 1952;Hollinghead, 1930). Macnair and Christie (1983) and Christie and Macnair (1984) have shown that simple genetic systems in the yellow monkey flower, Mimulus guttatus Fischer ex DC, lead to two separate isolating barriers.…”

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THE DISTRIBUTION OF POSTMATING REPRODUCTIVE ISOLATING GENES IN POPULATIONS OF THE YELLOW MONKEY FLOWER,MIMULUS GUTTATUS

Christie

Macnair

1987

Evolution

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Postmating reproductive isolating barriers are generally believed to arise as the chance by-product of genetic differentiation. The classical view is that these barriers normally involve differentiation at many loci, and therefore require long periods of allopatric isolation. The formal genetics of, and the distribution of genes responsible for, such barriers are known in very few cases. This paper examines the distribution of the genes responsible for two different postmating barriers in 18 populations of the yellow monkey flower, Mimulus guttatus. The genetic relatedness of the populations was measured by a morphometrical analysis. Widespread polymorphism was found for three of the four components of the two genetic systems responsible for the two barriers, with at least 13 populations possessing genes for one or both of the barriers. In one system (the C7/U8 system; Christie and Macnair, 1984), the distribution of the two component genes was correlated with the morphometrical similarity and geographical location of the populations. This pattern could be produced by a historical association or by an adaptive response. In the other system (the Cerig/C10 system; Macnair and Christie, 1983), the genes were more widely dispersed, and there was no obvious morphometrical or geographical association. Populations possessing the complementary factors causing partial reproductive isolation are not always widely separated geographically. These results indicate that the spread of postmating reproductive isolating genes through drift, selection, or hitchhiking could readily cause reproductive isolation to evolve in this species.>.

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Complementary Factors in Barley Giving a Lethal Progeny

Cited by 31 publications

References 0 publications

Genetic basis of hybrid breakdown in a Japonica/Indica cross of rice, Oryza sativa L.

Genetic basis of hybrid breakdown in a Japonica/Indica cross of rice, Oryza sativa L.

Distribution of the complementary genes causing F1 weakness in the common rice and its wild relatives. I. L-2-a gene in Asian native cultivars.

THE DISTRIBUTION OF POSTMATING REPRODUCTIVE ISOLATING GENES IN POPULATIONS OF THE YELLOW MONKEY FLOWER,MIMULUS GUTTATUS

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