地方品种大粒王粒型及产量构成性状在F_2的表现

The Grain Type and Yield Performance of Cultivar Daliwang in F_2 Population

对水稻地方品种大粒王与中小粒品种鄂晚10号杂交F2的199个单株进行了籽粒及其相关性状的考察,同时进行了相关性及通径分析。结果表明:有效穗数与单株产量呈极显著的正相关,千粒重、粒长、粒宽对结实率呈极显著负相关,粒长、粒宽对千粒重呈极显著正相关,粒长、粒宽和千粒重与结实率呈极显著负相关。通径分析表明有效穗数对单株产量的直接作用最大,粒长对长宽比的直接作用最大。

The grain and other characteristics of 199 plants from F2 generation of cuhivar Daliwang X Ewan-10 were investigated using correlation and path analysis in the current work. The results showed that the effective panicle number had a significantly positive correlation with yield per plant. The 1000-grain weight, grain length and grain width were significantly negatively correlated to seedsetting rate. The grain length and grain width demonstrated a positive correlation with 1000-grain weight. The effective panicle number gave the high-est contribution to yield per plant. Grain length had an important contribution to length-width ratio. The path analysis showed that the effective panicle Grain length were significantly positively number had a significantly positive correlated to length-width ratio. correlation with yield per plant.