Abstract
A mapping population of 205 recombinant inbred lines based on a cross between two drought-tolerant upland rice varieties, Bala and Azucena, was used to identify quantitative trait loci (QTLs) for drought-related traits (root morphology) and field performance under drought. A root growth study included two types of soil-filled containers and hydroponics in addition to root penetration assessment using the wax layer method. Drought screening was conducted over two seasons in the field at both IRRI and WARDA. By using multiple environments and by comparing with other experiments conducted on other populations, some potentially valuable QTLs have been identified. Four of these regions are now being used to improve the Indian upland variety Kalinga III. A total of nine QTLs are being developed into near-isogenic lines to further investigate the nature of the QTLs.
| Original language | English |
|---|---|
| Title of host publication | Advances In Rice Genetics |
| Subtitle of host publication | Part 2 |
| Publisher | World Scientific Publishing Co., Inc. |
| Pages | 279-281 |
| Number of pages | 3 |
| ISBN (Electronic) | 9789812814319 |
| DOIs | |
| Publication status | Published - 1 Jan 2008 |
Bibliographical note
The author acknowledges the great contribution to this rice mapping project of many individuals who are or who will be co-authors in other more detailed publications. The research described has largely been funded by the Department for International Development, U.K.Publisher Copyright:
© International Rice Research Institute 2003.