未知产量品系胶树苗期产量预测方法的准确度

采用苗期产量预测方法对未知产量品系的3龄胶树进行产量预测,结果如下: 用“小叶柄胶法”,高产品系的选对率达80%,低产品系的误选率为10%;3龄幼树小叶柄胶值与其成龄芽接树头三割年平均产量之间呈极显著相关(n=42,r=0.5559~**)。用“叶脉胶法”,高产品系的选对率为63.6%,低产品系的误选率为8%;3龄幼树叶脉胶等级与其成龄芽接树头三割年平均产量之间亦呈极显著相关(n=42,r=0.5218~(**))。

ACCURACY OF METHODS FOR PREDICTING YIELD POTENTIALS OF THREE-YEAR-OLD NURSERY CLONES

The present paper describes the accuracy of the methods for predicting rubber yield potentials at nursery stage of unknown-yield three-year-old clones."Petiolule latex method" gave a rate of correct selection of high yielding clones at 80% and wrong selection of poor yielding clones at only 10%. The latex yield of petiolules of three-year-old buddings was significantly correlated with the mean yield of mature buddings over the first three years of tapping (n=42, r=0.5559)."Lateral vein latex method" offered a rate of correct selection of high yield clones at 63.6% and wrong selection of poor yield clones at 8%. The graded latex yield of the lateral veins of three-year-old buddings was significantly correlated with the mean yield of mature buddings over the first three years of tapping (n=42, r=0.52l8).