麻风树无性系种实性状变异与选择
Fruit traits variation and clone selection of Jatropha curcas
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摘要: 【目的】分析麻风树单果均质量、百粒质量、出仁率、出籽率、种子体积、种仁含油量和单株果实产量等性状的遗传变异，在此基础上，对无性系进行评选.【方法】对海口市新海林场3年生麻风树无性系试验林33个无性系的种实特征进行调查；通过聚类分析，对参试无性系进行分类，并作综合评定.【结果和结论】麻风树无性系间在种实性状上存在显著差异.18号无性系百粒质量最大，26号和20号种仁含油量最高；百粒质量与单果均质量、种子体积和种仁含油量相关性达到极显著水平，种仁含油量除与出籽率和种子体积相关性不显著外，与其他性状相关性均达到显著水平；经综合评价，初步确定1、30、18、15和25号为优良无性系.Abstract: 【Objective】 In order to study the genetic variability and select superior clone of Jatropha curcas, fruit mass, 100-seed mass, kernel rate, seed rate, seed volume, and oil content were analyzed. 【Method】 The fruit characteristics of 3 years old J. curcas of 33 clones were investigated in Xinhai Forestry Farm Hainan Province. Using cluster analysis, the further selections of these clones were evaluated.【Result and conclusion】 The results showed that there were significant differences in clones of J. curcas. No.18 was the best for the 100-seed mass; the oil content of No.26 and No.20 was better than those of others. 100-seed mass had a significant positive correlation with fruit mass, seed volume, and oil content. However, oil content had no significant correlation with seed rate and seed volume, but it had a significant positive correlation with other character indexes. No.1, No.30, No.18, No.15 and No.25 were selected as the superior clones.
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Keywords:
- Jatropha curcas /
- clone /
- fruit trait /
- superior clone selection
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