Heterosis in Switchgrass: Spaced Plants
نویسندگان
چکیده
منابع مشابه
Epigenetics and Heterosis in Crop Plants
Heterosis refers to improved or altered performance observed in F1 hybrid organisms when compared to their parents. Heterosis has revolutionized agriculture by improving key agronomic traits in crop plants. However, even after decades of research in this area a unifying molecular theory of heterosis remains somewhat elusive. For many years it has been observed that the dominant, overdominant an...
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BACKGROUND Switchgrass (Panicum virgatum L.) is being developed as a bioenergy crop for many temperate regions of the world. One way to increase biomass yields is to move southern adapted lowland cultivars to more northern latitudes. However, many southerly adapted switchgrass germplasm can suffer significant winter kill in northerly climes. MATERIALS AND METHODS Here, we have applied next-ge...
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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...
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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...
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ژورنال
عنوان ژورنال: Crop Science
سال: 2008
ISSN: 0011-183X
DOI: 10.2135/cropsci2007.12.0695