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Functional Characterization of Genes/QTLs for Increasing Rice Yield Potential

Jie-Zheng Ying,Yu-Yu Chen,Hong-wei Zhang

Published 2014 in Unknown venue

ABSTRACT

Rice (Oryza sativa L.) as the monocot model plant and an important food crop is cultivated worldwide. Due to the rapid growth of the world’s population, rice yield is urgently required to increase to meet world food demand. In the last century, rice yield experienced rapid growth twice in China, which is mainly attributed to the exploitations of semi-dwarf 1(sd1) gene and heterosis of F1 hybrid. Before the green revolution, rice varieties were tall and had a low harvest index. Introgression of sd1 into the varieties significantly reduced the plant height and increased the harvest index, which resulted in a dramatic increase of rice productivity [1]. Heterosis breeding has been widely used to improve rice yield potential. Hybrid rice varieties usually have a yield advantage of 10-20% over the conventional inbred varieties, thus cover more than half of the total rice area in China at present [2, 3]. However, rice yield per unit area has not been much elevated and the arable land for rice cultivation has kept decreasing during the past two decades. New genetic improvement strategies are urgently required to break the bottleneck of yield potential of current varieties, which largely rely on the elucidation and exploitation of genetic and molecular basis for rice yield traits [4].

PUBLICATION RECORD

  • Publication year

    2014

  • Venue

    Unknown venue

  • Publication date

    2014-04-23

  • Fields of study

    Agricultural and Food Sciences, Biology

  • Identifiers
    DOI 10.5772/56820
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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