超早熟大豆“东农36号”农艺性状与产量的相关及通径分析

本文以1983年在黑龙江省黑河地区5个试验点上进行的东农36号高产规范化栽培试验所得到的数据,进行了农艺性状和产量的相关和通径分析。结果表明,单株荚数和粒数与产量呈显著或高度显著的正相关。通径分析表明,单株荚数和粒数与产量的正相关,都有分枝数的明显的间接作用,突出地看到分枝数在产量申的重要作用。

AN ANALYSIS OF RELATIONSHIP BETWEEN AGRONOMIC CHARACTERS AND YIELD IN A SUPER-EARLY SOYBEAN CULTIVAR

Dongnong 36 is an extremely early soybean cultivar. It's registration and release has allowed the northern part of Heilongjiang province of China to become the newly developed soybean production region. In 1983, we made an experiment in 5 stations of this region for founding a mathematical model of this cultivar management. From the data of these experiments we made the analysis of relationship of agronomic characters to yields. Yield was corelated significantly and positively with the number of pods per plant, the number of branches per plant and the number of seeds per plant except a station in the 5 stations. Path analysis showed that these characters had a important role for determinating yield, the multiple correlation coefficient was 0.958, but the height of plant and weight of 100 seeds were not the important characters for determing the yield.Both direct path coefficient of branch to yield or indirect path coefficient through other characters to yield were positive except the number of nodes on main stem. It was evident that the effect of branches to yield in the early cultivar was bigger than other characters.