Catalogue du jardin des plantes Gorenki. by Fischer F.

By Fischer F.

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Small portions of Z. palustris grain are blended into gourmet preparations of regular rice. In Asia the term wild rice refers to the twenty related species of Oryza, which also are called weedy rice. One of these related species, Oryza glaberrima, is cultivated in Africa, but is being rapidly replaced by the higher-yielding O. sativa. The wild or weedy species of Oryza serve as sources of resistance to diseases and insects of cultivated rice. S E E A L S O Agriculture, History of; Agriculture, Modern; Borlaug, Norman; Economic Importance of Plants; Grains; Grasses; Green Revolution.

Nature’s World Records. , 1977. Raven, Peter. , Ray F. Evert, and Susan E. Eichhorn. Biology of Plants, 6th ed. New York: W. H. , 1999. Young, M. , ed. The Guinness Book of World Records. , 1997. Reproduction, Alternation of Generations and haploid having one set of chromosomes, versus having two (diploid) zygote the egg immediately after it has been fertilized; the one-cell stage of a new individual diploid having two of each type of chromosome; twice the haploid number During sexual reproduction two gametes, each of which is haploid, unite to form a single-celled zygote, which is diploid.

The first sporophytes were little more than single sporangia, probably embedded in the much larger gametophytes. As evolution progressed, sporophytes became larger and larger, and gametophytes became more and more reduced. Even today, there is no consensus as to which theory best explains the diversity seen in modern organisms. S E E A L S O Algae; Angiosperms; Bryophytes; Ferns; Gametophyte; Gymnosperms; Reproduction, Fertilization and; Reproduction, Sexual; Sporophyte. Barbara Crandall-Stotler Bibliography Graham, Linda.

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