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A Morphological and Ecological Study of Oryza spp.

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A Morphological and Ecological Study of Oryza spp.

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    1. A Morphological and Ecological Study of Oryza spp. Jennifer Rogers and Dr. Tao Sang Plant Biology, Michigan State University

    2. Oryza spp. Plants are usually 2-10 ft. Fruit is a caryopsis Leaves are slender, long, and clasping Panicle is terminal and diffuse 1 Flowered spikelet Requires marshy, moist soil

    3. Oryza Oryza sativa Domesticated ~9000 years ago Staple food for >1/2 of the world population 21 Wild Oryza spp. Diverged for ~40 million years Distributed in diverse habitats in tropical and subtropical Africa, Asia, Australia, and Central and South America Genome types: AA, BB, CC, BBCC, CCDD, EE, FF, GG, HHJJ, and HHKK

    4. Ecological Questions Physiological ecologists address ecological questions about the controls over the growth, reproduction, survival, abundance, and geographical distribution of plants as these processes are affected by the interactions between plants with their physical, chemical and biotic environment.

    5. Why does a plant grow where it does? It has physiological mechanisms to explain the morphological and ecological observations. We need to look at the interaction between environmental factors, genotype, morphology, and physiology to fully understand plant adaptation.

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