摘要
以包括籼、粳及其中间类型的28个水稻品种(系)、广亲和系及光敏核不育系为试材,分别进行籼/粳、粳/籼、粳/偏籼、籼/偏粳、籼/籼及粳/粳杂交,应用程氏指数法对其中70个 F_1及其亲本进行分类的结果表明,28个亲本基本上可以分为籼、粳两种类型,这两种类型又分别可以进一步分为典型籼型和偏籼型、典型粳型和偏粳型,广亲和系为偏籼或偏粳型;籼粳交 F_1也大多为偏籼或偏粳型(69.3%),以籼型或粳型品种为母本的 F_1偏籼或偏粳型均占70%以上;F_1分类指数与母本值呈显著正相关,与双亲中亲值呈极显著的正相关。可见籼粳交 F_1既受母本影响,又与双亲亲缘有密切关系。
In this study 28 hybrid rice parents and their 70 F_1 were examined
and classified,using Cheng's index as a criterion.The parents could be
mainly grouped into two categories:indica and japonica rices.The wide
compatible parents were indica-cline or iaponica-cline.Their class-
ification indexes were 9～17.F_1(from cross between indica and japonica
rices)classificaion indicated that indica-cline or japonica-cline types
took a large rate accounting for 69.a per cent of the total.F_1 with
indica rice as female parents were mostly indica-cline,approximately
accounting for 75 per cent of the total,whereas those with japonica
rice as female parents were largely japonica-cline,generally 71.4 per
cent of the total.Moreover,F_1 classified indexes were significantly
correlated with female parent value,or very distinctly correlated with
the mediate value of parents.Eventually F_1 classification was affected
by both parents and the genetic relationship of parents.
出处
《沈阳农业大学学报》
CAS
CSCD
1991年第0期82-86,共5页
Journal of Shenyang Agricultural University
关键词
灿稻
粳稻
程氏指数法
杂种
F1代
indica rice
japonica rice
hybrdization
Cheng's index
classification of rice cultivars
