油研7号高产栽培的性状表现及与产量相关性

1997－1998年,对油研7号45个高产群体的30个植株性状进行了统计分析,结果表明,群体的主茎数,一次分枝总数,群体角果数,地上部干物重,群体士物重,主花序角果数,一次分枝角果数,主花序产量,一次分枝产量,二次分枝产量等10个性状与群体产量间呈极显著或显著正相关,10个与产量有显著相关性的性状中,群体干物质质量是高产栽培的主攻目标。

Character correlations of Brassica napus cv. Youyan 7 grown under high-yielding cultivation conditions

Statistical analysis of 30 characters for 45 high yielding populations in 1997~1998 showed that there were significant or extremely significant positive correlations between seed yield and each of the following characters: number of main inflorescences of population, total number of primary branches, number of siliquae of population,number of siliquae on main inflorescences or primary branches,total or aerial dry matter weight of population,yield of main inflorescences,primary or secondary branches.Population dry matter weight is the most important target for high yielding cultivation among the 10 characters which significanly correlated with seed yield.