Cold tolerance in rice varieties at different growth stages

Ye, C., Fukai, S., Godwin, I., Reinke, R., Snell, P., Schiller, J. and Basnayake, J. (2009) Cold tolerance in rice varieties at different growth stages. Crop and Pasture Science, 60 4: 328-338. doi:10.1071/CP09006


Author Ye, C.
Fukai, S.
Godwin, I.
Reinke, R.
Snell, P.
Schiller, J.
Basnayake, J.
Title Cold tolerance in rice varieties at different growth stages
Journal name Crop and Pasture Science   Check publisher's open access policy
ISSN 1836-0947
Publication date 2009-01-01
Year available 2009
Sub-type Article (original research)
DOI 10.1071/CP09006
Open Access Status
Volume 60
Issue 4
Start page 328
End page 338
Total pages 11
Editor John Irwin
Place of publication Australia
Publisher CSIRO Publishing
Language eng
Subject C1
820402 Rice
070305 Crop and Pasture Improvement (Selection and Breeding)
Abstract Low temperature is a common production constraint in rice cultivation in temperate zones and high-elevation environments, with the potential to affect growth and development from germination to grain filling. There is a wide range of genotype-based differences in cold tolerance among rice varieties, these differences often reflecting growth conditions in the place of origin, as well as breeding history. However, improving low temperature tolerance of varieties has been difficult, due to a lack of clarity of the genetic basis to low temperature tolerance for different growth stages of the rice plant. Seeds or plants of 17 rice varieties of different origins were exposed to low temperature during germination (15 degrees C), seedling, booting, and flowering stages (18.5 degrees C), to assess their cold tolerance at different growth stages. Low temperature at the germination stage reduced both the percentage and speed of germination. Varieties from China (B55, Banjiemang, and Lijianghegu) and Hungary (HSC55) were more tolerant of low temperature than other varieties. Most of the varieties showed moderate levels of low temperature tolerance during the seedling stage, the exceptions being some varieties from Australia (Pelde, YRL39, and YRM64) and Africa (WAB160 and WAB38), which were susceptible to low temperature at the seedling stage. Low temperature at booting and flowering stages reduced plant growth and caused a significant decline in spikelet fertility. Some varieties from China (B55, Bangjiemang, Lijiangheigu), Japan (Jyoudeki), the USA (M103, M104), and Australia (Quest) were tolerant or moderately tolerant, while the remaining varieties were susceptible or moderately susceptible to low temperature at booting and flowering stages. Three varieties from China (B55, Lijianghegu, Banjiemang) and one from Hungary (HSC55) showed consistent tolerance to low temperature at all growth stages. These varieties are potentially important gene donors for breeding and genetic studies. The cold tolerance of the 17 rice varieties assessed at different growth stages was correlated. Screening for cold tolerance during early growth stages can therefore potentially be an effective way for assessing cold tolerance in breeding programs.
Keyword low temperature
LOW-TEMPERATURE
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Agriculture and Food Sciences
 
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Created: Thu, 03 Sep 2009, 18:16:43 EST by Mr Andrew Martlew on behalf of School of Land, Crop and Food Sciences