孙维敏,徐阳,龚榜初,吴开云.浙江省柿种质资源果实形状多样性研究[J].林业科学研究,2019,32(5):42-50
浙江省柿种质资源果实形状多样性研究
Study on Fruit Shape Diversity of Persimmon Germplasm Resources in Zhejiang Province
投稿时间:2018-12-17  修订日期:2019-02-18
DOI:10.13275/j.cnki.lykxyj.2019.05.006
中文关键词:    种质资源  果实形状
英文关键词:Diospyros kaki Thunb.  germplasm resources  fruit shape
基金项目:中央级公益性科研院所基本科研业务费专项资金重点项目“柿提质增效关键技术研究”(CAFYBB2017ZA004-3);浙江省农业(果品)新品种选育重大科技专项“柿枣新品种选育”(2016C02052-10)
作者单位E-mail
孙维敏 中国林业科学研究院亚热带林业研究所, 浙江 杭州 311400  
徐阳 中国林业科学研究院亚热带林业研究所, 浙江 杭州 311400  
龚榜初 中国林业科学研究院亚热带林业研究所, 浙江 杭州 311400 gongbc@126.com 
吴开云 中国林业科学研究院亚热带林业研究所, 浙江 杭州 311400  
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中文摘要:
      [目的]揭示浙江省柿种质资源果实表型性状及柿果地理分布特点,为柿果选育提供参考依据。[方法]通过对浙江省73份柿种质资源的23个果实性状测定,研究果实表型性状及性状间的相关关系,并利用主成分分析(PCA)及PCA得分图对果形进行分类,分析柿果地理分布特点。[结果]柿果表型性状差异较大,变异系数为10.05% 48.45%,果实质量、果实体积、果实纵截面面积、果实横截面面积、果实纵径、果实横径及果形指数均值分别为103.34 g、108.44 cm3、26.58 cm2、26.54 cm2、5.91 cm、5.84 cm和1.03;单粒种子质量、单粒种子体积、种子长度、种子宽度、种子厚度、种子长宽比、种子个数、种子占果实体积比均值分别为0.90 g、0.97 cm3、21.80 mm、11.43 mm、5.07 mm、1.94、4.30粒和4.24%;髓心质量、髓心体积、髓心高、髓心顶宽、髓心基宽、髓心高顶宽比、髓心高基宽比和髓心占果实体积比均值分别为2.11 g、2.62 cm3、28.65 mm、6.32 mm、12.16 mm、4.80、2.50和2.67%。果实、种子及髓心大小相关系数为0.360.78,果形指数与种子长宽比、髓心高顶宽比及髓心高基宽比相关系数分别为0.86、0.90和0.88,表明果实各部分间的大小具有正相关关系,形状具有相似性。对16个原始性状指标进行主成分分析,前2个主成分(75.64%)可表示柿果表型性状的大小和形状指标。PCA得分图与表型性状各区间的重合率较高,可较好地表示果实表型性状的大小及形状指标,将柿果形状分为大果长形、小果长形、小果扁形和大果扁形四大类。杭嘉湖平原扁形果占66.67%,以大果扁平为主(41.67%),浙西丘陵地区以大果长形为主(41.67%),金衢盆地扁平果形占71.43%,浙南山地以小果长形为主(48%)。[结论]浙江省柿种质资源果实表型性状丰富,柿果各部分之间大小和形状具有相关性,长果形主要分布在山区,而扁果形分布地较为平坦。
英文摘要:
      [Objective] To study the phenotypic traits of persimmon germplasm resources in Zhejiang Province and the geographical distribution characteristics of persimmon fruit.[Method] By measuring 23 fruit traits of 73 persimmon germplasm resources in Zhejiang Province, the phenotypic traits and their relations were explored. The fruit shape was classified by principal component analysis (PCA) and PCA score, and the geographical characteristic distribution of fruit shape were analyzed.[Result] The phenotypic traits of persimmon fruit varied greatly, and the coefficient of variation was from 10.05% to 48.45%. The mean values of fruit mass, fruit volume, fruit longitudinal and transverse area, fruit longitudinal length, fruit transverse length and fruit shape index were 103.34 g, 108.44 cm3, 26.58 cm2, 26.54 cm2, 5.91cm, 5.84 cm and 1.03, respectively. The mean values of seed mass, seed volume, seed length, seed width, seed thickness, seed shape index, seed quantity and the volume ratio of seed to fruit were 0.90 g, 0.97 cm3, 21.80 mm, 11.43 mm, 5.07 mm, 1.94, 4.30 and 4.24%, respectively. The mean values of pith mass, pith volume, pith height, pith top width, pith base width, ratio of height to top width of pith, ratio of height to base width of pith, and the volume ratio of pith to fruit were 2.11 g, 2.62 cm3, 28.65 mm, 6.32 mm, 12.16 mm, 4.80, 2.50 and 2.67%, respectively. Correlation analysis showed that the correlation coefficient of fruit, seed and pith size was between 0.36 and 0.78. The correlation coefficients of fruit shape index with seed shape index, ratio of height to top width of pith and ratio of height to base width were 0.86, 0.90 and 0.88, respectively, which indicated that the size of fruit parts had a positive correlation and the shape had similarity. 16 original phenotypic traits was analysed by PCA, and the first two principal components (75.64%) showed the size and shape indicators of persimmon phenotypic traits. The coincidence rate of the PCA score map and phenotypic traits was higher, which can well represent the size and shape index of the fruit phenotypic traits. Therefore, the phenotypic traits of fruit were divided into four categories:large fruit with long shape, small fruit with long shape, small fruit with flat shape and large fruit flat-shaped. The flat-shaped fruit accounted for 66.67% in Hangzhou-Jiaxing-Huzhou Plain, mainly the large fruit with flat shape (41.67%); the large fruit with long shape accounted for 41.67% in the western Zhejiang hilly area; the flat fruit shape accounted for 71.43% in the Jinhua-Quzhou Basin, and the southern Zhejiang Province was dominated by small fruit with long length (48%).[Conclusion] The fruit phenotypes of persimmon germplasm resources in Zhejiang Province are rich, and there are correlations between the size and shape of each part of persimmon fruit. The long-shaped fruits mainly distribute in mountain area, while the flat-shaped fruit in plain.
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