摘要
恢复系３５５０是用青四矮１６为母本，与ＩＲ５４杂交选育而成的．该恢复系生育期约１４０天，株高９０ ～９５ｃｍ，茎秆粗壮，叶片短直，株型好；抗稻瘟病，中抗白叶枯病（３级）；恢复谱广，恢复力强；配合力好，且其杂种 表现出弱感光性．
Restorer 3550 was developed by crossing the female parent Qingsiai 16 to the male parent IR54. Its growth duration is about 140 days with 90-95cm plant height, strong culm, short stiff leaves, and good plant type. It has good resistance to blast, and medium resistance to bacterial blight （Class 3）, and has wide restoring spectrum. It was crossed to 14 MS lines including 9 CMS lines and 5 TGMS lines of ＆ different sources of cytoplasm, and the results showed that the ed atting rates of all hybrids but KS- 14/3550 （75. 3K） were over 80%. Restorer 3550 has good combining ability, the hybrid combinations of 3550 with Zhen shan 97A, Xieqingzao A,Ⅱ-32A and Bo A showed high wilding ability. Furthermore, 3550 possesses the photopethe weakly-sensitive factor, all of its hybrids expressed ~k sensitivity to photoperiod, which is needed for late season rices planted in Southern China to obtain high yields.
出处
《杂交水稻》
CSCD
北大核心
1993年第6期1-3,共3页
Hybrid Rice
关键词
恢复系3550
选育
恢复谱
配合力
restorer 3550
selection
restoring spectrum
combining ability
