【摘要】 根据镇稻系列品种的选育经验和多年的育种实践,得出了以下几点育种经验:①通过合理利用优良亲本,进行科学配组创造变异;②材料抉择时综合性状协调是育种的关键;③掌握好苗期看长势、中后期看抗性、后期看熟相、考种看籽粒等方法进行选择。并对进一步改良粳稻品种提出了以下几点策略:①广泛征集、鉴定和利用优良种质资源,同时注重加强优异种质创新,不断提高育种基因库整体水平;②杂种优势的利用;③抗纹枯病、抗除草剂等新种质的创新与应用;④水稻育种栽培理论的集成与应用。更多还原

【Abstract】 According to the breeding practice of Zhendao Series rice varieties for many years,the following breeding experiences were obtained: ①Hybridization between elite parent materials to create variations;②Selection of materials with elite comprehensive traits;③Four selection Tips shown as focusing on growth at seeding,resistance at middle to late growing stages,maturity performace at late stage,and seed appearance at seed assessment.To fouther improve Japonica rice varieties,the following measures were put forward: Wide collection,identification,utilization and creation of elite germplasm to improve the gene pool,utilization of heterosis,development and application of germplasm with sheath blight resistance and herbicide resistance,innovated and applied,and integration of rice breeding and cultivation theories.更多还原