- 行业: Agriculture
- Number of terms: 29629
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The proportion of heterozygotes to recessive homozygotes expected in a backcross.
Industry:Agriculture
A depressed marshy area on a river floodplain behind the natural levees where surface drainage is hampered by surrounding higher land.
Industry:Agriculture
Any of numerous unicellular microorganisms of the class Schizomycetes, occurring in a wide variety of forms, existing either as free-living organisms or as parasites, and having a wide range of biochemical, often pathogenic properties.
Industry:Agriculture
A disease of rice caused by the bacteria Xanthomonas campestris pv. oryzae. The leaf stage of BLB is the most widespread and, therefore, causes the most damage. The early symptoms include yellow, undulating lesions along the margins of the upper portion of the leaf blades. The lesions develop rapidly parallel to the veins and extend laterally to the healthy regions. In extreme cases, a large portion of the entire leaf blade becomes infected, turns yellow or dirty white, and finally dies.
Industry:Agriculture
Frequently used in hybrid rice breeding. Breeding nursery where male sterile plants identified among the test crosses (CMS x elite maintainer line) and their backcross progenies are crossed with the male parents with the objective of transferring cytoplasmic male sterility into the nuclear genotype of the elite maintainer line.
Industry:Agriculture
One of the parents of a hybrid with which the hybrid is repeatedly crossed.
Industry:Agriculture
A method for developing a new variety in which a simply inherited trait is transferred through the backcross method.
Industry:Agriculture
A water fern that fixes nitrogen symbiotically with the blue-green alga Anabaena.
Industry:Agriculture
