| 橡胶树魏克汉种质资源的胶乳产量与生理性状变异分析 |
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| 引用本文： | 杨湉,赵祺,李小琴,张凤良,毛常丽,胡永华,吴裕.橡胶树魏克汉种质资源的胶乳产量与生理性状变异分析[J].热带作物学报,2020,41(5):893-900. |
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| 作者姓名： | 杨湉 赵祺 李小琴 张凤良 毛常丽 胡永华 吴裕 |
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| 作者单位： | 云南省热带作物科学研究所,云南景洪 666100 |
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| 基金项目： | 云南省热带作物科技创新体系建设专项资金项目(RF2019-2);云南省橡胶产业技术体系(2018KJTX008-02);农业部热作种质资源保护项目(151721301354052002) |
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| 摘 要： | 本研究以128个开割的魏克汉种质橡胶树无性系为研究对象,测定年均刀次胶乳产量、干胶含量以及胶乳中蔗糖、无机磷、硫醇、总固形物等生理参数,结合2017年底橡胶树胸径围数据进行群体变异和相关性分析。结果表明,蔗糖含量变幅为3.14~35.50 mmol/L,变异系数最大(53.2%);年均刀次胶乳产量变幅为24.2~475.0 mL,变异系数为51.5%;蔗糖含量与干胶含量和年均刀次胶乳产量呈显著负相关(P<0.05)。对年均刀次胶乳产量进行K-均值聚类分析,将128份无性系分为3个类型,第I类约占10%,年均刀次胶乳产量最高(351.0 mL),胸径围均值最大(59.5 cm),第4刀胶乳产量最高(196.2 mL),但蔗糖含量平均值最低(7.83 mmol/L),其他生理指标差异不显著。
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| 关 键 词： | 橡胶树 种质资源 胶乳生理 胶乳产量 变异 |
| 收稿时间： | 2019-07-30 |
Variations Analysis of Latex Yield and Physiological Traits in Hevea brasiliensis Wickham Germplasm Resources |
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| YANG Tian,ZHAO Qi,LI Xiaoqin,ZHANG Fengliang,MAO Changli,HU Yonghua,WU Yu.Variations Analysis of Latex Yield and Physiological Traits in Hevea brasiliensis Wickham Germplasm Resources[J].Chinese Journal of Tropical Crops,2020,41(5):893-900. |
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| Authors: | YANG Tian ZHAO Qi LI Xiaoqin ZHANG Fengliang MAO Changli HU Yonghua WU Yu |
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| Institution: | Yunnan Institute of Tropical Crops, Jinghong, Yunnan 666100, China |
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| Abstract: | 128 clones of Wakeham germplasm rubber trees, which were tapped, were used as the research object in this study. The average annual latex yield of each tapping from clonal ramet, dry rubber content in latex and sucrose content, inorganic phosphorus content, mercaptan content, total solids content in latex were determined, and the correlation analysis of population variation was analyzed combined with the data of rubber tree diometer at breast height (DBH) at the end of 2017. The sucrose content was in the range of 3.14-35.50 mmol/L, with the largest coefficient of variation for 53.2%. Average annual latex yield of each tapping from clonal ramet was in the range of 24.2-475.0 mL, with a variation coefficient 51.5%. Sucrose content and dry rubber content, average annual latex yield of each tapping from clonal ramet was significantly negative correlated (P<0.05). All clones could be divided into three types by K-means cluster analysis. The first class was accounted for 10%, with the highest average annual latex yield of each tapping from clonal ramet (351.0 mL) and the highest average DBH circumference (59.5 cm). The fourth tapping latex yield was the highest (196.2 mL) with the lowest sucrose content (7.83 mmol/L) and no significant difference of other physiological indexes. |
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| Keywords: | Hevea brasiliensis germplasm resources latex physiology latex yield variation |
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