Early generation selection of insect resistance in potato

1984 ◽  
Vol 61 (7) ◽  
pp. 405-418 ◽  
Author(s):  
L. L. Sanford ◽  
T. L. Ladd ◽  
S. L. Sinden ◽  
W. W. Cantelo
Keyword(s):  
Insect Resistance ◽  
Early Generation ◽  
Early Generation Selection ◽  
Selection Of

EARLY GENERATION SELECTION UNDER DIFFERENT ENVIRONMENTS AS IT INFLUENCES ADAPTATION OF BARLEY

1967 ◽  
Vol 47 (5) ◽  
pp. 507-517 ◽  
Author(s):  
C. A. St-Pierre ◽  
H. R. Klinck ◽  
F. M. Gauthier
Keyword(s):  
Environmental Conditions ◽  
Early Generation ◽  
Early Generation Selection ◽  
Wide Adaptation ◽  
Segregating Population ◽  
Yield Trials ◽  
Selection Of

Selections, from F2 to F5 inclusive, were made from a segregating population of barley under the environmental conditions of Macdonald College and La Pocatière. In each generation, seed from the selected plants was divided into two parts and subsequently seeded at the two locations. This yearly exchange of material provided 16 selection pathways, that is, groups of different environmental conditions, under which selection was performed. The adaptability of the selected strains was estimated from yield trials conducted at the two stations during F7 and F8. Strains selected at La Pocatière in F4 possessed a better adaptation than those selected at Macdonald College. Strains selected at alternate locations in successive years, starting at La Pocatière in F2, possessed the widest adaptation.Yield trials indicated that the adaptability of the selected strains was dependent upon the selection pathway involved. Selection of barley varieties with wide adaptation could be enhanced by paying attention to the environmental conditions under which the selection is made.

A rapid method for early generation selection of dwarf genotypes in wheat

Euphytica ◽  
1977 ◽  
Vol 26 (3) ◽  
pp. 733-738 ◽  
Author(s):  
Michael D. Gale ◽  
Richard S. Gregory
Keyword(s):  
Rapid Method ◽  
Early Generation ◽  
Early Generation Selection ◽  
Selection Of

The Pre-Platonic Philosophers

2019 ◽  
pp. 56-77
Author(s):  
Filippo Del Lucchese
Keyword(s):  
The Other ◽  
Early Generation ◽  
Successful Result ◽  
Spontaneous Formation ◽  
Normal Life ◽  
The Earth ◽  
Forms Of Life ◽  
Selection Of

This chapter examines Empedocles’s idea of monstrosity in the early generation of life, when the earth spontaneously produces all sort of monstrous beings, only some of which will survive and generate viable forms of life. Empedocles intends to establish the norms of life on the process of generation and selection of monstrosities. Nature is not an artist that shapes normal life after many unsuccessful attempts. Empedocles rather sees Nature itself as the successful result of spontaneuous events that create limits and boundaries for viable life. The other major philosopher of the pre-Platonic period is Democritus. I explore his materialism and its relationship with necessity and chance. Atomists have been accused of paradoxically grounding their universe on both necessity and chance. I show that the paradox, however, is only such from the Aristotelian perspective, which aims at establishing teleology as the highest form of causality, in particular in the biological realm. Through the idea of monstrosity, Democritus grounds its atomism on the concept of the spontaneous formation of life. Beyond Empedocles, Democritus flattens even further the material ontology of nature, grounding it on the epigenetical production of normal and mostrous life alike. Through a reading of the agonistic process of life formation, monstrosity becomes the antidote to teleology.

Sign in / Sign up

Export Citation Format

Share Document