Quantitative Genetik

Hiorth, Gunnar Eilert

doi:10.1007/978-3-642-88018-6

Cited by 23 publications

(26 citation statements)

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“…The positive skewness observed in many F2's could be explained by one or more of three reasons (SMITH, 1944;HIORTH, 1963): i) The genes effectuating a shorter LP (-alleles) show dominance. The F1 and F 2 means both would deviate from the mid-parent value in the direction of the low parent.…”

Section: Discussionmentioning

confidence: 99%

“…To estimate the number of segregating genes one has to do this indirectly from the frequency of F 2 plants with values equal to those of the parents. Assuming no linkage between the segregating genes the chance of an F 2 plant with a value equal to the low or to the high parent is (¼)n where n represents the number of segregating genes (HIORTH, 1963). Due to variance components (environment, observational error) of a non-genetical nature the chance to observe F2 plants with parental values will be larger than (k)n.…”

Section: Discussionmentioning

confidence: 99%

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Further evidence of polygenic inheritance of partial resistance in barley to leaf rust, Puccinia hordei

Parlevliet

1978

Euphytica

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The latent period (LP) is a crucial component of partial resistance. Five cultivars, L94, Sultan (Su), Volla (VI), Julia (Ju) and Vada (Va), representing the known range in partial resistance and LP were crossed in a diallel, and the F1, F2 and F3 tested. The LP effectuated by the five cultivars is about 9, 101/2, 101/2, 13 and 151/2 days, respectively. The crosses Su × L94, V1 x L94 and Ju x L94 had an F2 positively skewed. Their F2 means were similar or only slightly larger than the F1 means. The F2 frequency distributions in the crosses V1 x Su, Ju x Su and Ju × VI were normal or nearly so with F1 and F2 means similar to each other and to the mid-parent value. The crosses involving Va as a parent again showed a positive skewness but with F2 means considerably larger than the F1 means.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Further evidence of polygenic inheritance of partial resistance in barley to leaf rust, Puccinia hordei

Parlevliet

1978

Euphytica

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“…The positive skewness, observed in the Fz, may be explained by one or more of three reasons (SMITH, 1944;HIORTH, 1963):…”

Section: Discussionmentioning

confidence: 99%

Partial resistance of barley to leaf rust, Puccinia hordei. III. The inheritance of the host plant effect on latent period in four cultivars

Parlevliet

1976

Euphytica

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The latent period (LP) in the barley-leaf rust relationship is an important component of the partial resistance complex. The inheritance of the host plant effect on LP was studied in five crosses between four cultivars. The LP, effectuated by the susceptible cultivars L94 and L92, were 8.0 and 8.6 days resp., those of the resistant cultivars Minerva (Mi) and Vada (Va) 16.9 and 17.1 days resp. The mean F~ and F2 values of the crosses L92 ,< L94 and Mi × Va were intermediate between the parental ones. The variances of the F2's were slightly larger than those of the parents and the Fl'S indicating some segregation. In the crosses between a susceptible and a resistant cultivar the F1 value was half way between the mid-parent and susceptible parent value. The F2 mean lay approximately half way between the mid-parent and F1 value, with a distribution positively skewed and slightly bimodal. There was no transgression, in fact not even the parental values were recovered among nearly 500 Fz plants. The F3

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“…Such temporal heterogeneity is not unusual during fungal interactions. Cell fusion between two strains of Neurospora crassa that normally did not produce phenoloxidases, led to induced phenoloxidase activity and pigment formation [16], and interactions at the interface between different isolates of Phellinus tremulae resulted in induction of weak phenoloxidase activity and pigment formation [17]. Some general inhibition of P. radiata growth prior to contact, accompanied by intense laccasea-naphthol and peroxidase activities, appeared to occur during its 1-month confrontation with S. hirsutum (Fig.…”

Section: Phenoloxidase Localizationmentioning

confidence: 99%

Extracellular enzyme localization during interspecific fungal interactions

White¹

1992

FEMS Microbiology Letters

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showed spatially and temporally heterogeneous patterns of laccase-a-naphthol and peroxidase activities. These activities were coincident in axenic cultures, but were not always so during interaction. Confrontation between species resulted in induction of phenoloxidase activities, even within coenocytic colony regions of Phlebia species which were normally void of such activities in axenic culture. These events resulted in restriction of C. versicolor growth during interaction with P. rufa.

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Quantitative Genetik

Cited by 23 publications

References 0 publications

Further evidence of polygenic inheritance of partial resistance in barley to leaf rust, Puccinia hordei

Further evidence of polygenic inheritance of partial resistance in barley to leaf rust, Puccinia hordei

Partial resistance of barley to leaf rust, Puccinia hordei. III. The inheritance of the host plant effect on latent period in four cultivars

Extracellular enzyme localization during interspecific fungal interactions

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