泰丰优组合的特征特性与产量构成因素分析

Analysis of characteristics and yield components of Taifengyou combinations

为了解泰丰优组合在漳州2010—2011年晚稻区试中表现增产的原因,分析泰丰优组合与对照种博优253的特征特性、产量及其构成因素,比较两类组合的差异。结果表明,泰丰优组合比对照种博优253增产达2.97%以上,名列前茅;平均生育期比对照种迟熟2 d左右;中感稻瘟病以上,抗瘟性强于对照种;米质外观优,与对照种相当;具有良好的株叶型态,优于对照种;泰丰优组合属于大穗大粒型组合,博优253属于多穗小粒型组合,泰丰优组合通过大穗大粒来弥补穗数不足,获得比博优253高的产量。同时对适合漳州市种植的高产、优质、抗病的三系杂交稻选育进行探讨。

To understand the cause of increase in yield of Taifengyou combinations in Zhangzhou rice regional trial from the year 2010 to 2011, the data of Taifengyou combinations and the boyou 253 was analyzed. The results showed that the average yield in two years was 2,97% higher than that of the boyou 253, ranking first; the average duration was 2 days mare than the check; medium susceptibility to rice blast, its resistance to blast stronger than the check; high grain quality, like the check; ideal plant type. Taifengyou combinations belonged to big panicle and big spikelet, they gained more yield than the check by big panicle and big spikelet, and hoyou 253 belonged to more panicles and little spikelet. Breeding three-line hybrid rice with good quality, high yield and resistance to diseases adapting to Zhangzhou was discussed.