Toward the mapping of physiological and agronomic characters on a rice function map: QTL analysis and comparison between QTLs and expressed sequence tags |
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Authors: | K Ishimaru M Yano N Aoki K Ono T Hirose S Y Lin L Monna T Sasaki R Ohsugi |
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Institution: | (1) National Institute of Agrobiological Resources, Kannondai, 2-1-2, Tsukuba, Ibaraki 305-8602, Japan Fax: +81-298-388347 e-mail: kenshi@abr.affrc.go.jp, JP;(2) Rice Genome Research Program, National Institute of Agrobiological Resources/ Institute of Society for Techno-Innovation of Agriculture, Forestry, and Fisheries, Kannondai, 2-1-2, Tsukuba, Ibaraki 305-8602, Japan, JP |
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Abstract: | We have constructed a rice function map by collating the results on quantitative trait loci (QTLs) for 23 important physiological
and agronomic characters (including 13 newly measured traits) obtained using backcross inbred lines of japonica Nipponbare×indica Kasalath. Using these materials, The Rice Genome project (RGP) has developed a high-density genetic map. QTLs controlling
yield did not overlap with those controlling the morphological and physiological traits supposed to relate to yield, such
as photosynthetic ability. This result suggests that these traits do not influence yield, at least in this genetic background
and environment. QTLs controlling yield also did not overlap with the structural genes controlling carbon metabolism (rbcS, cytosolic or plastidic fructose-1,6-bisphosphate, R-enzyme, and sucrose synthase).The combination of a function map and results from the RGP can be advantageous. The utility of this map is discussed.
Received: 1 October 1999 / Accepted: 28 July 2000 |
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Keywords: | EST Rice Oryza sativa L Quantitative trait loci (QTLs) |
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