优质稻新组合宜优99产量结构相关分析

通过对宜优99的产量（y）及其产量构成因素的通径分析，结果表明：产量（y）与有X1和每穗粒数X2及千粒重X4呈极显著正相关，与结实率X3呈显著正相关；各产量构成因素对产量的直接通径系数（P）和贡献率（rp），由大到小依次为有效穗数X1〉每穗粒数X2〉千粒重X4〉结实率X3。

Yield Structure-related Analysis into New Rice Combination Yiyou 99

The path analysis into the yield and its components of Yiyou 99 show that the yield is extremely distinct and positive related to effective fringe quantity, seed number per fringe and one-thousand-seed weight, and distinct and positive related to setting percentage. The path coefficient and contribution percent of yield components to the yield vary from the high to the low as effective fringe, seed number per fringe, one-thousand-seed weight, and setting percentage.