Author： Qiu Boyin Zhou Weihui Xue Dawei Zeng Fanrong Ali Shafaqat Zhang Guoping
Publisher： Springer Publishing Company
ISSN： 0014-2336
Source： Euphytica, Vol.174, Iss.2, 2010-07, pp. : 199-207
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Abstract
Identification of Cr-tolerant lines in a rice DH population was conducted based on the modified weighted function analysis. The significant difference was found between the two parents and among DH population lines, with lines 117, 101 and parent ZYQ8 showing the high Cr tolerance, lines 41 and 49 showing Cr sensitivity. A dramatic difference also existed in Cr accumulation of plant tissues, with lines 19, 18 and 1, 5 having the minimum and maximum shoot Cr accumulation, respectively, and line 19, parent JX17 and lines 1, 56, ZYQ8 having the minimum and maximum root Cr accumulation, respectively. There was a significant difference in shoot/root ratio of Cr accumulation among the population, with line 18 and parent ZYQ8 ranking the tops and lines 109, 71, 19, parent JX17 ranking the bottoms. Zn uptake and accumulation was reduced when the plants were exposed to Cr stress. In addition, three QTLs were detected, which are, respectively, associated with Cr accumulation in shoot and root, and ratio of shoot to root.
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