Effect of genotype and seed size on early vegetative growth of sheep's burnet

Douglas, G. B.; Gordon, Ian; Chu, A. C. P.; Robertson, A. G.

doi:10.1080/00288233.1993.10427491

Cited by 4 publications

(2 citation statements)

References 9 publications

(9 reference statements)

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“…Antonovics & Schmidt, 1986;Roach & Wulff, 1987;Lacey, 1990;Schwaegerle & Levin, 1990;Biere, 1991;Platenkamp & Shaw, 1993), and these seed characters are observed to affect progeny fitness (e.g. Stanton, 1984;Wulif, 1986a,b;Mazer, 1987;Douglas et aL, 1993;Huyghe, 1993;Thompson et al, 1993;Zhang & Maun, 1993; reviewed in McGinley et al, 1987). Similarly, maternal size generally affects egg size in animals (e.g.…”

Section: Introductionmentioning

confidence: 99%

Maternal and genetic influences on egg size and larval performance in a seed beetle (Callosobruchus maculatus): multigenerational transmission of a maternal effect?

Fox

1994

Heredity

107

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The mechanisms by which maternal effects are transmitted across generations are variable among characters and taxa. Because egg size is simultaneously a maternal and offspring character, and variation in egg size often has implications for offspring life histories, egg size may facilitate multigenerational transmission of maternal effects. The relative contributions of genetic and maternal effects to variation in egg size and offspring performance (body size and development time), with an emphasis on maternal contributions to offspring egg sizes (and thus granddaughter phenotype), are estimated in the seed beetle, Callosobruchus maculatus, using a half-sib quantitative genetic design. Both body size and egg size (egg length and width) were highly heritable characters (estimated h2 > 0.55 for each character), and the proportion of the variance explained by maternal effects was near zero for each. Maternal effects do, however, appear to affect early larval life history, through a female body size effect on hatchling resources (estimated as egg size). This initial disadvantage to larvae results in extended larval development time, but not in an effect on final adult size. These results indicate that variation in egg size and body size are not maternally transmitted across generations, but instead that most of the variation in body size and egg size is additive genetic variation.

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Section: Introductionmentioning

confidence: 99%

Maternal and genetic influences on egg size and larval performance in a seed beetle (Callosobruchus maculatus): multigenerational transmission of a maternal effect?

Fox

1994

Heredity

107

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“…Bunyan 80 cultivar has giyen higher values (p<0.05) than natural material for the number of stems per plant, inflorescence length, 1000 fruit weight, dried hay yield per plant, leaf ratio and germination. Douglas et al (1994) reported that lesser burnet plants frorn large seeds gave higher mean values for leaf area, shoot length, root length and dry weight than those from medium and small seeds.…”

Section: Resultsmentioning

confidence: 99%

Variation in Some Morphological and Agronomic Characters of Lesser Burnet (Sanguisorba minor Scop.)

Kendir¹

1999

Tarım Bilimleri Dergisi

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: This work was conducted with two lesser burnet types to determine the amount of variation in some characters. Lesser burnet types were grown in Ankara in the spring of 1996. Plants in the field were observed for a number of morphological and agronomic characteristics in 1997. Bünyan 80 cultivar had superiority for stem number, inflorescence length, 1000 fruit weight, dry yield per plant, leaf ratio, germination at 0.05 probabilty level. A wide range of variation was detected among the plants. Values obtained by rating coefficients of variation for each type made it clear that the variation in native population material was wider for most of the characteristics observed. The upper limits of variation in the material collected from Ankara rangelands were also higher than those of Bünyan 80 cultivar. Data showed that native genotype could be used in lesser burnet breeding studies for agricultural purposes.

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