Inheritance of leaf area and hooked trichome density of the first trifoliolate leaf in common bean (<i>Phaseolus vulgaris</i> L.)

Park, S. J.; Timmins, P. R.; Quiring, Dan T.; Jui, P. Y.

doi:10.4141/cjps94-048

Cited by 18 publications

(6 citation statements)

References 13 publications

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“…These estimates are generally higher than those obtained from agricultural studies of alfalfa (Gonzalez-Garcia et al 2000), wild potato (Mehlenbacher et al 1984;Vallejo et al 1994a,b), tobacco (Johnson et al 1988), and the common bean (Park et al 1994).…”

Section: Discussionmentioning

confidence: 58%

Is Induction Response Negatively Correlated With Constitutive Resistance in Black Mustard?

Traw

2002

Evolution

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Black mustard, Brassica nigra, is highly variable in both constitutive resistance and induction response following damage by herbivores. A focal population from Ithaca, New York, was used to test the following two predictions of optimal defense theory: (1) that allocation to resistance will reduce plant performance in the absence of herbivores; and (2) that induction response will be negatively correlated with constitutive resistance. The experiment consisted of a half-sib mating design with 47 paternal families and four dams per sire, fully crossed with a damage treatment consisting of 25% leaf removal by the cabbage white butterfly, Pieris rapae, when plants had four leaves. Leaf trichome density, sinigrin concentration, and glucobrassicin concentration were 38%, 19%, and 16% higher, respectively, for the seventh leaf of damaged plants. Paternal families did not vary significantly in their induction response. Narrow-sense heritabilities were h(S)(2) = 0.51, 0.76, and 0.50 for constitutive leaf trichome density, sinigrin concentration, and glucobrassicin concentration, respectively. Positive genetic correlations were found between glucobrassicin concentration and days to first flower, suggesting a genetic cost of resistance. Induction responses were negatively correlated with constitutive allocation for leaf trichome density and sinigrin concentration. The results were therefore consistent with optimal defense theory, offering modest evidence for both predictions.

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Section: Discussionmentioning

confidence: 58%

Is Induction Response Negatively Correlated With Constitutive Resistance in Black Mustard?

Traw

2002

Evolution

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“…The heritability estimate of constitutive trichome number (h 2 ϭ 0.54 Ϯ 0.21) is in agreement with the mean value (ϮSE) of 0.56 (0.14) obtained for a natural population of a close relative, Brassica rapa (Å gren and Schemske 1994). These estimates are generally higher than those obtained from agricultural studies of alfalfa (Gonzalez-Garcia et al 2000), wild potato (Mehlenbacher et al 1984;Vallejo et al 1994a,b), tobacco (Johnson et al 1988), and the common bean (Park et al 1994).…”

Section: Discussionmentioning

confidence: 67%

Is Induction Response Negatively Correlated With Constitutive Resistance in Black Mustard?

Traw

2002

Evol

View full text Add to dashboard Cite

Black mustard, Brassica nigra, is highly variable in both constitutive resistance and induction response following damage by herbivores. A focal population from Ithaca, New York, was used to test the following two predictions of optimal defense theory: (1) that allocation to resistance will reduce plant performance in the absence of herbivores; and (2) that induction response will be negatively correlated with constitutive resistance. The experiment consisted of a half-sib mating design with 47 paternal families and four dams per sire, fully crossed with a damage treatment consisting of 25% leaf removal by the cabbage white butterfly, Pieris rapae, when plants had four leaves. Leaf trichome density, sinigrin concentration, and glucobrassicin concentration were 38%, 19%, and 16% higher, respectively, for the seventh leaf of damaged plants. Paternal families did not vary significantly in their induction response. Narrow-sense heritabilities were ϭ 0.51, 0.76, and 0.50 for constitutive leaf trichome density, sinigrin 2 h s concentration, and glucobrassicin concentration, respectively. Positive genetic correlations were found between glucobrassicin concentration and days to first flower, suggesting a genetic cost of resistance. Induction responses were negatively correlated with constitutive allocation for leaf trichome density and sinigrin concentration. The results were therefore consistent with optimal defense theory, offering modest evidence for both predictions.

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“…Aztec Ruins is the first Pueblo site that demonstrates the consumption of bean leaves. The curved trichomes, although present on the harvested bean pods, are much more abundant on leaf surfaces (Park et al 1994). The find of epidermis articulated with bean trichomes is clear evidence that the leaves were eaten.…”

Section: Conclusion From Open Site Coprolite Analysis-aztec Ruinsmentioning

confidence: 89%

Imaging coprolite taphonomy and preservation

Reinhard

Camacho

Geyer

et al. 2019

Archaeol Anthropol Sci

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The impact of coprolite taphonomy on parasite remains and aDNA recovery has been recognized. In general, coprolites from sites protected by geologic features such as caves and rock shelters exhibit the best preservation. In contrast, coprolites from open sites can be badly affected by taphonomic processes as shown by analyses of parasite eggs. For eggs, the impact of mites and free living nematodes has been quantified. Mites are associated with poor pinworm egg preservation. In other studies, percolation of water through sediments has a negative impact on egg recovery. We note that dietary remains can also decompose at open sites. Through scanning electron microscopy (SEM), we present examples of screened but chemically untreated microscopic remains. "Panorama" SEM images provide an excellent visual overview of the taphonomy of dietary remains. For this study, our focus is on digitalcommons.unl.edu

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Inheritance of leaf area and hooked trichome density of the first trifoliolate leaf in common bean (Phaseolus vulgaris L.)

Cited by 18 publications

References 13 publications

Is Induction Response Negatively Correlated With Constitutive Resistance in Black Mustard?

Is Induction Response Negatively Correlated With Constitutive Resistance in Black Mustard?

Is Induction Response Negatively Correlated With Constitutive Resistance in Black Mustard?

Imaging coprolite taphonomy and preservation

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