首页|Detection and Analysis of High Temperature Sensitivity of TGMS Lines in Rice Using AMMI Model
Detection and Analysis of High Temperature Sensitivity of TGMS Lines in Rice Using AMMI Model
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国家科技期刊平台
NETL
NSTL
万方数据
维普
With the AMMI(additive main effects and multiplicative interaction)analysis model,the determination of the sensitivity to temperature among different TGMS(thermo-sensitive genic male sterile)lines was performed. To assess the genetic differences due to high temperature stress at. the fertility-sensitive stage(10- 20 d before heading),seven genotypes(six TGMS lines and the control Pei-Ai64S)were grown from May 4 at seven different stages with 10d intervals. The temperatures at. the fertility-sensitive stages involved twelve levels from ＜ 20 to ＞30℃ under the regime natural conditions in Hangzhou,China. There was considerable variation in pollen fertility among genotypes in response to high temperature. Five genotypes identified as TGMS lines as their percentages of fertile pollens were lower than or close to that. of the. control except for the unstable line RTS19(V6). When the temperatures at. the fertility-sensitive stage were at Ⅰ -Ⅳ,Ⅴ-Ⅵ and Ⅶ-Ⅻ,the percentages of fertile pollens varied in the ranges of 46.46- 48.49%,19.62-22.79% and 3.49- 5.87%,respectively. The critical temperatures of sterility and fertility in the five TGMS lines were 25.1 and 23.0℃,respectively. Considering the amounts and directions of main effect and their IPCA(interaction principal components analysis),we can classify the lines and temperature levels into different groups,and describe the characteristics of genotyPe x temperature interaction,offering the information and tools for the development and utility of thermo-sensitive male sterile lines.Several TGMS rice lines with their reproductive sensitivity to high temperature that can be screened using the AMMI model may add valuable germplasm to the breeding program of hybrid rice.
Rice.AMMI(additive main effects and multiplicative interaction).TGMS (thermo-sensitive genic male sterile).Fertility
FU Li-zhong、XUE Qing-zhong
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Department of Agronomy,College of Agriculture and Biotechnology,Zhejiang University,Hangzhou 310029,P.R.China
国家自然科学基金Key Research Project of Zhejiang Province, China
国家科技期刊平台
NSTL
万方数据
维普
