2000•JOURNAL OF HUNAN AGRICULTURAL UNIVERSITYRequires access
Breeding of Photo Thermal Sensitive Genic Male Sterile (PTGMS) Line Lu 18S in Rice and Its Fertility
Yang Yuan
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Abstract
Lu 18S is an early indica photo thermal sensitioe genic male sterile(PTGMS) line. As a sterile strain discovered in the F 2 generation of the cross of “Kang Lozao///Ke Fuhong2/Xiang Zaoxian3//02428”,it was selected at the condition of the pressure of the artificial lower temperature and the natural lower temperature in 1996.The critical sterile temperature is lower than 23.5 ℃ and its steady infertility period is about 90 days in Hunan.This strain has good bloom and a crossed seed set of 50%.Selfed seed set is higher than 30%.It shows a wide compatability and good general and special combining ability.It has high quality grain,strong resistance to coldness and medium resistance to rice blast.