The Differences of Nutritional and Functional Component Contents in Different Types of Special Rice
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    Abstract:

    The research of special and functional rices has been paid more and more attention by the society, with the development of social economy and the improvement of people's living standard, the breeding of germpalsms with higher contents of nutritional and functional component are one of the important goals in current rice breeding. The evaluation of nutritional and functional component contents was conducted using created one white and 39 special rices with single or more than two special properties of fragrance, colored seed coat, giant embryo, sweet and waxy. There are no significant difference in most of the amino acid content and mineral element content between special rices and white rice, while there are significant difference in few amino acids and mineral elements between special rices and white rice. The lysine content of seven types of special rices for black brown rice, red rice, black giant embryo glutinous rice, red giant embryo glutinous rice, giant embryo glutinous rice, red sweet rice, white sweet rice were significantly or extremly significantly higher than whit rice for 2.91-24.68%; the iron content of six types of special rices for black rice, black brown rice, red rice, fragrant glutinous rice, black giant embryo glutinous rice, red sweet rice were significantly or extremly significantly higher than whit rice for 17.62-68.09%; the calcium contents of seven types of special rices for black brown rice, red rice, black sweet rice, red sweet rice, white sweet rice were significantly or extremly significantly higher than white rice for 23.56-49.46%; the zinc content of five types of special rices for black rice, black brown rice, black sweet rice, red sweet rice, white sweet rice were significantly or extremly significantly higher than white rice for 12.21-60.39%. This indicates there has a certain increasing effect for the content of lysine, iron, alcium and zinc when with the single special trait or to aggregating more than two special traits such as colored seed coat, giant embryo, sweetness, fragrance and waxy. Furthermore, several special rices with higer funcitional component content were selceted from created germplasms. The selected white sweet rice 1553 and red giant embryo glutinous rice 1476 has 10.22 mg/g and 9.75 mg/g of lysine contents respectively, which were hihger than white rice for 29.4% and 23.4% respectively; the iron content of red rice 1439 and 1440 were 20.9 ug/g and 18.9 ug/g respectively, which were higher than white rice for 99.1% and 80.0% respectively; the selenium content of black sweet rice 1511 and 1515 were 90.3 ng/g and 72.6 ng/g respectively, which were higher than white rice for 205.1% and 145.3%, respectively; the aminobutyric acid content of white sweet rice 1551 and fragrant glutinous rice 1446 were 226.6 ug/g and 221.2 ug/g respectively, which were higher than white rice for 15.7% and 12.9%, respectively; the anthocyanin content of black giant embryo glutinous rice 1464 and black rice 1432 were 53.02 ug/g and 52.36 ug/g respectively, which were higher than mean value of 18 accessions colored rices tested in this study for 253.23% and 248.83% respectively. These new created different types of germplasms with higher functional componens will be further utilized as parents in rice breeding, the identification of ecological suitability and industrialization exploitation.

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History
  • Received:March 26,2017
  • Revised:August 28,2017
  • Adopted:June 07,2017
  • Online: November 01,2017
  • Published:
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