无患子无性系幼林期生长结实性状研究

The Growth and Seed Production Characteristics of Sapindus mukurossi Clones in the Juvenile Plantation

通过对3年生无患子无性系幼林生长和结实性状调查及主要经济指标测定分析,以8年生实生林和无性系母株为对照,揭示无性系幼林期的生长结实规律。结果表明:3年生无性系林与8年生无患子实生林相比,平均地径、平均干高、平均树高、冠幅、一级主枝数、平均新梢数均略低,但是平均开花枝数、平均开花枝率、平均结果枝数、平均结果株率、平均单株产量等性状均明显大于8年生的实生苗,无性系果实的单果重2.47 g^3.41 g、出籽率36.93%~53.82%、出仁率29.40%~32.37%、果肉皂苷产出率74.01%~78.39%、种仁含油率40.49%~43.86%,与各无性系母株最近连续3 a检测结果均值十分接近,保持了无性系母株的优良特性。

Based on the investigation on the growth and seed production characteristics of 3-year-old juvenile forest of Sapindus mukurossi clones and the analysis on major economic indicators,the law of the clone juvenile forest was revealed,taking 8-year-old seedling forest and the clones as the control. Compared the 3-year-old clone plants with the 8-year-old seedlings after afforestation,the results showed the average diameter,average stem high,average tree height,crown width,first class branch number and average new shoot number were slightly low for the former,but for the former the average blossom branch number,the average rate of blossom branches,the average fruit branch number,the average fruit branch rate,the average individual yield,and so on were much better than that of the latter. It was 2. 47 g ~ 3. 41 g for one fruit of the clone,the seed output percentage was 36. 93% ~ 53. 82%,the kernel output percentage was 29. 40% ~ 32. 37%,the saponin output percentage of the fruit pulp was 74. 01% ~ 78. 39%,and the oil percentage of kernel was 40. 49% ~ 43. 86%,which were similar to the data by consecutive 3 years determination from the mother trees of each clone and the fine characteristics of mother trees were inherited.