摘要
用双生苗品系ＡＰⅢ和ＡＰⅣ衍生的单生苗（ＡＰⅢ①、ＡＰⅣ①）和双生苗（ＡＰⅢ②、ＡＰⅣ②）植株与常规品系皖９０２４和０２４２８组配成１２个正反交组合，用不同ＡＰ编号互配成６个杂交组合，对１８个组合的亲本及Ｆ＿１、Ｆ＿２和从其中的１４个杂交组合Ｆ＿２双生苗植株衍生的Ｆ＿３株系的双生苗发生进行了观察。结果表明，ＡＰⅢ和ＡＰⅣ的双生苗特性是一种可遗传的隐性性状，但其遗传表达较为复杂，表现为从双生苗亲本中可衍生出单生苗和双生苗，而衍生的单生苗也可产生两种类型；从ＡＰ编号与常规品系杂交的Ｆ＿２中重组获得的双生苗，在Ｆ＿３表达程度随组合、株系而异，从不表达至高于双生苗亲本。对双生苗特性遗传复杂的原因进行了初步分析。
The twin secdlings were observed in F1,F2 and some F3 plant Iines derived from F2 tWln plants in 18 crosses together with their parents. Among theem12 were reciprocal crosses between difrerent twin seedinlg selections(APⅢ①and APⅣ①from single seeding progeny of twhsecdling Iines APⅢ and APⅣ,APⅢ②and APⅣ②from twin seedling progeny of APⅢand APⅣ)and conventional lines(Wan9024 and 0428),and 6 were crosses between different twin seedling selections.It was found that twin seedling is recessively heritable but its genetic expression is not simple,The derivatives from twin seedling lines may be twin or single scedlings and the later also can produee two types of seedlings.The twin seedlings,recombinants in F2 from the crosses between twin seedling selections and conventional Iines,also can produce both shgle and twin seedlings in F3 plant lines.The percentage of twin seedlings in F3 differred with crosses and plant lines.The reason for the complication of genetics of twin seedlings is discussed.
出处
《浙江农业学报》
CSCD
1994年第4期218-221,共4页
Acta Agriculturae Zhejiangensis
基金
浙江省科技攻关项目
关键词
无融合生殖
双生苗
遗传
水稻
Apomixis Twin seedlings
Inherjtance
Oryza sativa L.
