Maize is one of the most important three crops and forage in China. According to the increasing of the yield the genetic improvement plays an important role, whose effect is about 35%～40%, and it was due to the uses ...
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Maize is one of the most important three crops and forage in China. According to the increasing of the yield the genetic improvement plays an important role, whose effect is about 35%～40%, and it was due to the uses of heterosis. Because of the narrow germplasm and lack of basic study on heterosis, the yield of maize increased slowly. The classification of heterotic groups is essential to maize breeding because knowledge of heterotic groups could be interest to both the combination of outstanding hybrids and the improvement of elite inbred lines. The study on the
Proteins localized in cell walls are widely spread and relatively abundant in land plants. Primary walls contain more protein than secondary walls. They are often rich in one or two amino acids, contain highly repetit...
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Proteins localized in cell walls are widely spread and relatively abundant in land plants. Primary walls contain more protein than secondary walls. They are often rich in one or two amino acids, contain highly repetitive sequence domains, and are highly or lightly glycosylated. Among these are the hydroxyproline-rich glycoproteins (AGPs), the glycine-rich proteins (GRPs), the proline-rich proteins (PRPs), and chimeric proteins that contain extension-like domains. Members of the PRP class resemble in that they are rich in proline, also resemble in that they are composed of pentapeptide repeats such as PPVYK, or PPVEK, where the second proline is often hydroxyproline.
Some binary vector systems, pGreen series, the pMON series and the pCAMBIA series, have been wildly used in Agrobacterium-mediated transformation in plant. These standard binary vectors carried only 5-20 kb T-DNA. Whe...
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Some binary vector systems, pGreen series, the pMON series and the pCAMBIA series, have been wildly used in Agrobacterium-mediated transformation in plant. These standard binary vectors carried only 5-20 kb T-DNA. When large fragments of DNA (>50 kb) need to be transferred, specialized binary Ti vectors must be used. Recently, BIBAC (binary bacterium artificial chromosome) vector system has been developed. The vector system can be used to clone large DNA fragments and to
To detect QTLs controlling traits of agronomic importance in rice, two elite lines HR5 and Zhengshan97, which are significant difference in plant height, heading date and spikelet per panicle etc, were crossed. Subseq...
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To detect QTLs controlling traits of agronomic importance in rice, two elite lines HR5 and Zhengshan97, which are significant difference in plant height, heading date and spikelet per panicle etc, were crossed. Subsequently a single-seed-descend procedure was employed to produce 190 recombinant inbred lines （F）. On the basis of this population a molecular linkage map comprising 177 SSR markers was constructed. Composite interval mapping and interval. mapping was used to detect QTLs for such important agronomic traits as heading date （HD）, plant height （PH）, 1000-grain weight （KGW）, seed setting ratio （SSR）, panicle length （PL）, grains
Vitamin C (ascorbic acid) is essential to prevent disease associated with connective tissue (e.g., scurvy), improve cardiovascular and immune cell functions, and is used to regenerate α-tocopherol (vitamin E). Althou...
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Vitamin C (ascorbic acid) is essential to prevent disease associated with connective tissue (e.g., scurvy), improve cardiovascular and immune cell functions, and is used to regenerate α-tocopherol (vitamin E). Although plants and most animals can synthesize ascorbic acid (AsA), human lacks L-gulono-1,4-lactone oxidoreductase, which is required for the final step in AsA synthesis. Because AsA cannot be stored in the body, the vitamin must be acquired regularly from dietary sources, primarily from plants rich in AsA. Tomato
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