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连续数年观测了银杏结果雌株的7个结籽性状:a、1m长枝着生的雌球花数,b、人工授粉后此长枝上的成果数,c、以b/a计算的成果率(％),d、10果重,e、10籽重,f、出籽率(％),g、单株产籽量(kg/年)。方差分析表明,除b和c两性状外,其它5个性状单株之间的差异都达到显著或极显著水平。a、d、e、f和g性状的遗传力估值(H~2)分别为0.41、0.98、0.97、0.92和0.21。用a、e、f和g四个性状的加权系数W、H~2、表型值P和群体平均值P制定了综合选择指标方程式:I=0.041A/A+0.291E/E+0.184F/F+0.084G/G文章还讨论了银杏选种的方法和改良的程序。
For seven consecutive years, the results of the observation of the ginkgo female plant seven seed traits: a, 1m long branches with the female ball of flowers, b, after artificial pollination on the long branches of the results, c, calculated as b / a Fruit yield, d, 10 fruit weight, e, 10 seed weight, f, seed yield rate (%), g, seed yield per plant (kg / year). Analysis of variance showed that except for b and c, the differences among the other five traits all reached significant or extremely significant level. The heritability estimates (a ~ 2) for a, d, e, f and g traits were 0.41, 0.98, 0.97, 0.92 and 0.21, respectively. The comprehensive selection index equation was formulated with the weight coefficients W, H ~ 2, phenotypic value P and population average P of four traits a, e, f and g: I = 0.041A / A + 0.291E / E + 0.184F /F+0.084G/G The article also discusses the method of Ginkgo biloba selection and improved procedures.