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Accurate phenotyping reveals better QTL for waterlogging tolerance in barley
Citation
Zhou, M, Accurate phenotyping reveals better QTL for waterlogging tolerance in barley, Plant Breeding, 130, (2) pp. 203-208. ISSN 0179-9541 (2011) [Refereed Article]
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Copyright Statement
The definitive published version is available online at: http://onlinelibrary.wiley.com/
Official URL: http://onlinelibrary.wiley.com/
DOI: doi:10.1111/j.1439-0523.2010.01792.x
Abstract
Tolerance to soil waterlogging stress is an important plant breeding
objective in high rainfall or poorly drained areas across many countries
in the world. Similar to other abiotic stresses, waterlogging tolerance is
a complicated trait and the selection for tolerance has been a major
obstacle in breeding programmes. Molecular marker-assisted selection
(MAS) can be very effective. However, the success of MAS depends on
the development of reliable markers which requires accurate phenotyping
when searching for the markers linked to the tolerance. In this
experiment, a new screening facility, with the environment closer to
field conditions, has been used to screen a double haploid population
produced from a cross between waterlogging tolerant and susceptible
varieties. A new scoring system of plant healthiness (0 = plant died
from waterlogging; 10 = not affected by waterlogging) was also used
in this experiment. The results were compared with a previous
glasshouse pot experiment. Some quantitative trait loci (QTL) identified
from the current experiment and previous pot experiment were
quite different. From this experiment, two major QTL (QWL.YeFr.4H
and QWL.YeFr.2H.2, accounting 24% and 17% of phenotypic variation)
and two minor QTL (QWL.YeFr.2H.1 and QWL.YeFr.3H,
accounting 8% and 7% of the variation) were found. These four
markers can be very effectively used to select waterlogging tolerance.
By selecting all four closely linked markers, all the lines will be quite
tolerant with an average score of 7.6. In contrast, if none of above
markers were selected all the lines would be susceptible with an average
score of 1.4.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Agricultural and Veterinary Sciences |
| Research Group: | Crop and Pasture Production |
| Research Field: | Crop and Pasture Improvement (Selection and Breeding) |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Winter Grains and Oilseeds |
| Objective Field: | Barley |
| UTAS Author: | Zhou, M (Professor Meixue Zhou) |
| ID Code: | 64237 |
| Year Published: | 2011 |
| Web of Science® Times Cited: | 32 |
| Deposited By: | Agricultural Science |
| Deposited On: | 2010-07-08 |
| Last Modified: | 2017-11-06 |
| Downloads: | 7 View Download Statistics |
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