The Explanation of Hybrid Vigor

Hybrid vigor in science.

When I was president of the U.S. National Academy of Sciences, I came to believe that the future success of humanity may depend on learning to use the tools of science—including the collection of objective evidence on what works and why—at all levels of decision-making. Thus, the National Academies have repeatedly addressed questions such as “How can we make a science out of education?” or “How...

Alternative Hypotheses of Hybrid Vigor.

Hybrid mimics and hybrid vigor in Arabidopsis.

F1 hybrids can outperform their parents in yield and vegetative biomass, features of hybrid vigor that form the basis of the hybrid seed industry. The yield advantage of the F1 is lost in the F2 and subsequent generations. In Arabidopsis, from F2 plants that have a F1-like phenotype, we have by recurrent selection produced pure breeding F5/F6 lines, hybrid mimics, in which the characteristics o...

Embryological Aspects of Hybrid Vigor in Pines.

Embryological Aspects of Hybrid Vigor in Pines: Color Reaction of Vitamin A on Acid Earths: DR. PROFESSOR JOHN T. BUCHHOLZ .............................................. 135 GERDA GERNSHEIM MAYER and DR. HARRY SOBOTKA. Correction on "Chronic Intermittent Obituqary: Anoxia . . . ": PROFESSOR WARD C. HALSTEAD. Nevin M. Fenneman: DR. RAYMOND WALTERS. 142 How Stentor Anchors Itself: PRoFEssSOR E. A...

Hybrid vigor in the biological control agent, Longitarsus jacobaeae

Hybridization is an important evolutionary mechanism that can increase the fitness and adaptive potential of populations. A growing body of evidence supports its importance as a key factor contributing to rapid evolution in invasive species, but the effects of hybridization have rarely been assessed in intentionally introduced biological control agents. We investigated hybrids between a Swiss a...