Heterosis in Poultry
نویسندگان
چکیده
منابع مشابه
MITOCHONDRIAL HETEROSIS IN MAIZE1p2
M A N Y hybrids between genetic pure lines in maize exhibit heterosis. The search for the genetic basis of heterosis has been carried on for many years and by many workers. Despite these efforts, an adequate, specific biochemical explanation of heterosis has not been presented. JONES (1952) has noted the interaction of nuclear genes and cytoplasm, as evidenced by differences in reciprocal cross...
متن کاملHeterosis: Theory and Estimation
Heterosis is the foundation of modern maize breeding programs. Despite its importance in maize production, we know surprisingly little about the genetic basis of heterosis. Shull (1952) coined the term heterosis and defined it as: "... the interpretation of increased vigor, size, fruitfulness, speed of development, resistance to disease and to insect pests, or to climatic rigors of any kind, ma...
متن کاملWhat Is “ Heterosis ” ? L
T IS not my purpose in this paper to present or to discuss the actual basic I causes or the fundamental mechanisms which bring about the increased size, the excessive kinetic energy, the increased productiveness, resistance to disease or to unfavorable conditions of the environment, the “stimulating effects of hybridity,” the so-called “hybrid vigor” of English writers and “Luxurieren” of many ...
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The incidence and severity of disease associated with toxigenic Clostridium difficile have increased in hospitals in North America from the emergence of newer, more virulent strains. Toxigenic C. difficile has been isolated from food animals and retail meat with potential implications of transfer to human beings. The objective of the present study was to determine the prevalence of toxigenic C....
متن کاملGenomic architecture of biomass heterosis in Arabidopsis.
Heterosis is most frequently manifested by the substantially increased vigorous growth of hybrids compared with their parents. Investigating genomic variations in natural populations is essential to understand the initial molecular mechanisms underlying heterosis in plants. Here, we characterized the genomic architecture associated with biomass heterosis in 200 Arabidopsis hybrids. The genome-w...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1959
ISSN: 0032-5791
DOI: 10.3382/ps.0381381