| 摘要: |
| 为探讨不同种源木姜叶柯种子生物学性状变异规律和质量特征,该文以8个省份10个种源为对象,测定了种子4个生物学性状、4个营养成分及3个质量性状数值,开展了11个种子特征参数的相关性及聚类分析。结果表明:(1)种子单粒重、种子长、种子数/种序、种序长均值依次为1.82 g、14.57 mm、16.43个、11.78 cm,不同种源种子 4个生物学性状变异均达到极显著水平。(2)种子蛋白质、脂肪、还原糖和淀粉均值分别为4.75 g/100 g、0.97 g/100 g、1.13%、74.23 g/100 g,淀粉在4个营养成分指标中差异最小。(3)种子百粒重、含水率和生活力均值依次为172.92 g、42.05%、53.00%,不同种源种子3个质量性状差异较大。(4)种子4个生物学性状与淀粉、蛋白质分别正向、负向相关,种子长与脂肪及还原性总糖正相关。(5)种子生物学性状与生境因子相关性复杂,种序长与无霜期极显著相关,相关系数达到0.832,与海拔显著负相关,相关系数达到-0.698,随纬度递增种子品质略变差。(6)种子聚类为第Ⅰ类短种序高营养成分型,第Ⅱ类长种序高生活力型,第Ⅲ类种子繁多高淀粉型等3类,聚类不呈现地理效应。综上所述,不同种源种子生物学性状和质量变异丰富,说明不同种源在子代分化已有遗传基础,种源筛选还需结合田间试验。 |
| 关键词: 木姜叶柯, 生物学性状, 质量特征, 变异, 相关性分析, 聚类分析 |
| DOI：10.11931/guihaia.gxzw202008021 |
| 分类号: |
| 文章编号:1000-3142(2021)12-2024-09 |
| Fund project:国家基金面上项目(32071785); 中央级公益性科研院所基本科研业务费专项资金(CAFYBB2019SY016); 国家林业局科技发展中心项目(KJZXSA202038)[Supported by the National Natural Science Foundation of China(32071785); Special Fund for Basic Scientific Research Operating Expenses of Central Public Welfare Scientific Res Institutes(CAFYBB2019SY016); Program of State Forest Administration Science and Technology Development Center(KJZXSA202038)]。 |
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| Variation of biological traits and quality characteristics in Lithocarpus litseifolius seeds from different provenances |
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YANG Zhiling1,2*, TAN Zifeng1,2, WANG Yiqing3,4
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1. Research Institute of Subtropical Forest, Chinese Academy of Forest, Hangzhou 311400, China;2. Key Laboratory of Tree Breeding of
Zhejiang Province, Hangzhou 311400, China;3. Hunan Aokang BioTechnology Co. Ltd., Xupu 419300, Hunan,
China;4. Hunan Yao Tea Engineering Technology Research Center, Xupu 419300, Hunan, China
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| Abstract: |
| In order to investigate variation of biological traits and quality characteristics in Lithocarpus litseifolius seeds, four biological traits, four nutrient contents and three quality characteristics were measured from ten provenances in eight provinces. The correlation and cluster analysis of eleven seed characteristic parameters were carried out. The results were as follows:(1)The mean values of single seed weight, seed length, seed numbers per panicle and panicle length were 1.82 g, 14.57 mm, 16.43 grain and 11.78 cm respectively, and variation of four biological traits of seeds from different provenances reached extremely significant level.(2)The average values of protein, fat, reducing sugar and starch of seed were 4.75 g/100 g, 0.97 g/100 g, 1.13%, 74.23 g/100 g respectively. Starch had the smallest difference among four nutrient indexes.(3)The average values of hundred-grain weight, rate of water content and viability of seeds were 172.92 g, 42.05% and 53.00% respectively. Three quality characteristics of seeds from different provenances varied greatly.(4)Variation of four biological traits of seeds had positively or negatively correlation with starch and protein, and seed length had a positive correlation with fat and reducing total sugar.(5)The correlation between biological traits and habitat factors was very complex. Panicle length had a positive significant correlation with frost-free-period, the correlation coefficient reached 0.832. In the mean time, panicle length had a negative correlation with altitude, the correlation coefficient reached -0.698. The quality of seed became slightly worse with latitude increasing.(6)Seeds were classified into three groups based on clustering analysis. Group I was characterized by short panicle and high nutrient content. Group Ⅱ was seized of long panicle and high viability. Group Ⅲ had seeds numerous and high starch content. Seed clustering did not show geographical effects. In a word, variation of biological traits and quality characteristics of seeds from different provenances were very rich, which indicate that there is a genetic basis from different provenances for progeny differentiation, and provenance screening needs to be combined with field experiments. |
| Key words: Lithocarpus litseifolius, biological trait, quality characteristics, variation, correlation analysis, cluster analysis |
