吉林省水稻超高产育种研究Ⅰ. 不同类型水稻品种产量构成与超高产育种目标

Studies on Super Rice Breeding in Jilin Province Ⅰ. Yield Compositions of Different Type Rice Variety and the Target of Super Rice Breeding

摘要:

对近10a育成的水稻不同生育类型品种产量构成因素进行剖析与性状相关性分析结果：①吉林省育成的各类型品种主要以穗数型为主；②不同类型品种的株高与产量有显著的正相关；③中早熟和中熟类型品种是降低了每公顷的穗数适当提高了每穗的粒数和千粒重，而中晚熟和晚熟类型品种每公顷穗数较对照相对增多，穗粒数减少；④不同类型品种千粒重都有所提高，但结实率中早熟和中熟类型品种都略高于中晚熟和晚熟类型品种。在分析产量构成的同时，对我省超高产育种目标提出新的不同形态指标。

Abstract:

The yield composing factors and characteristics correlated with different type variety bred in last decade were analyzed: ① The varieties bred in Jilin are mainly multi_type; ② The yield is positively correlated plant high with between; ③ The panicles of mid_early mature and middle mature varieties per ha. are decreased, and the grain weight and numbers per panicle are increased, for late mature variety, the panicles per ha. are increased, and the grains is decreased; ④ The grain weight of different type variety is all increased compared with CK, but the setting rate of mid_early mature and middle mature is higher than that of late mature type. According to the analysis of yield compositions, the different morphological index of super rice breeding in Jilin was stated.