摘要
对受测品种与籼、粳测验种测交 F_1的黑染花粉率与小穗结实率的分析表明,两者相关不显著,建议在广亲和性品种筛选中宜以 F_1小穗结实率作为亲本亲和性鉴定的主要指标。提出当某品种与籼、粳测验种测交 F_1的平均结实率显著高于测验种间籼粳交 F_1的平均结实率而与测验种的平均结实率无显著差异时,可视为亲和性品种;在与籼、梗广泛测交中全部或绝大多数组合的结实率都在正常水平范围内的品种,可视为广亲和性品种。本研究筛选和验证了一批亚种间杂交具有亲和性的品种:皖9024、T984、Pecos、六千辛、中国91、秀水117、L201和 Douradaprecoce。其中 T984和中国91被进一步鉴定为广谱型的亲和性品种。
Correlation between fertile pollen and spikelet fertility in F_1 of varieties crossed with indica and japonica testers was found to be non-sigificant.It is suggested that for the screening of WCVs the spikelet fertility of F_1 obtained from test crosses be used as a main standard in evaluation of parent compatibility.For a given variety,when its average spikelet fertility of F_1 from crossing with indica and japonica testers significantly higher than that of F_1 from intersubspecific crossing of testers and insignificantly differed from that of testers,the variety ought to be considered as high compatibility one;when the spikelet fertility of F_1 of all or most crosses between the variety and indica and japonica varieties is in a normal range,the variety can be considered as WCV.Eight va- rieties i.e.Wan9024,T984,Pecos,Liuqianxin,Xiushui117,L201,Zhongguo91 and Dourada precoce were identified as higher compatibility ones.Among them,T984 and Zhongguo91 were further identified as WCVs.
出处
《浙江农业学报》
CSCD
1990年第1期1-6,共6页
Acta Agriculturae Zhejiangensis
关键词
水稻
亚种
广亲和性
鉴定
育种
indica/japonica F_1s
Wide compatibility varieties(WCVs)
Spikelet fertility
Fertile pollen
