2006年吉林省新育成水稻品种(系)产量构成分析

Analysis of New Breeding Rice Variety Yield Components in 2006 Jilin Province

以吉林省2006年结束区域试验的27个水稻品种(系)为材料,分析了4个熟期各品种(系)区域试验3年的平均产量构成因素。结果表明:对不同熟期的品种(系)应有不同的选择标准,在高产育种中应因熟期不同区别对待。对于中早熟品种,高产育种时应选择穗数中等、穗粒数和千粒重不太高、结实率较高的品种。对于中熟和中晚熟品种,高产育种时应选择中高秆大穗品种,同时注意提高结实率。对于晚熟品种,高产育种时要兼顾各因素,不能片面强调单一的因子。各个熟期高产育种的共同点是都应选择结实率较高的水稻品种。

Twenty seven rice varieties developed in Jilin 2006 rice regional trial were used as materials, and the rice varieties＇ yield components of early, middle, late heading of 4 mature stages were analyzed. The results showed that there should be different standards in choosing different maturity rice varieties in rice high yield breeding. Middling panicles, grain number per panicle and 1 000-grain weight, high seed setting rate rice varieties should be chosen in high yield breeding of early maturity： Middling plant height, big panicle and high seed setting rate rice varieties should be chosen in high yield breeding of middle and middle-late maturity. To late maturity rice varieties high yield breeding, all the yield components should be considered. The common point in all maturity of high yield breeding was to choose high seed setting rate rice variety.